Truck Fault Code Library

Q: What should I record before clearing a fault code?

Before clearing, record the full code ( SPN and FMI if available), whether it is active or inactive, all warning lamps and derate conditions, any related codes, and the vehicle's recent operating history. Clearing codes without recording this information can make diagnosis much harder.

Browse fault codes by category — SPN/FMI pairs, J1939, ABS, transmission, ELD, and manufacturer. Each page explains what a code means, common symptoms, and what to check first.

What The Terms Mean

In modern heavy-duty trucks, J1939 diagnostic messages often use SPN and FMI pairs. The SPN identifies the parameter, while the FMI describes the failure mode. Source Address, or SA, can help identify which module reported the problem. See the SPN/FMI guide for a full explanation.

Older systems may use MID, PID, and SID terminology. See the glossary for plain-English definitions of these and other diagnostic terms. OEM tools may also display manufacturer-specific codes that map to SPN/FMI records differently by engine family, calibration, and model year.

Code Categories

SPN/FMI Codes

Learn how Suspect Parameter Numbers and Failure Mode Identifiers work in heavy-duty diagnostics.

FMI Codes

Browse FMI 0 through FMI 31 with cautious plain-English diagnostic context.

J1939 Basics

A plain-English introduction to the vehicle network used by modern heavy-duty trucks.

J1939 Topics

Focused guides to SPN, FMI, source address, PGN, CAN bus, and data link terminology.

Cummins Fault Codes

Context for Cummins ECM faults, aftertreatment faults, and source verification needs.

Detroit Diesel Fault Codes

DD13, DD15, and DD16 fault code categories with careful source-backed framing.

Bendix ABS Fault Codes

Brake and stability code categories for Bendix ABS, ATC, and ESP systems.

WABCO ABS Fault Codes

Trailer ABS, EBS, blink codes, and SPN/FMI context for WABCO/ZF systems.

Eaton Transmission Fault Codes

Overview of AutoShift, UltraShift, and Endurant fault code formats.

ELD Malfunction Codes

FMCSA-backed explanations of ELD malfunctions and data diagnostic events.

Truck Systems

Educational system pages for aftertreatment, ABS, DPF, SCR, transmission, and data link issues.

Truck Symptoms

Symptom-based entry points for warning lights, derate, ABS lamps, DPF lights, and ELD indicators.

Manufacturer Hubs

Brand and supplier context pages for official verification paths and related systems.

SPN Topic Pages

Focused SPN number topic pages that explain what to record and why FMI context matters.

Diagnostic Education

Practical guides for recording codes, reading warning lights, and preparing technician notes.

Component Context

Component-level educational pages for sensors, modules, aftertreatment, brakes, transmission, and ELD hardware.

ELD Compliance Education

FMCSA and eCFR source-backed ELD malfunction, driver, and carrier education pages.

ELD Data Diagnostic Events

FMCSA-backed explanations of ELD data diagnostic event categories and how to handle them.

Fault Code Tools

Static browser-only decoders, note templates, and technician call checklists.

Source-Verified Detail Pages

medium high

ELD Power Malfunction

Electronic Logging Device · Power compliance monitoring

FMCSA-sourced explanation of ELD power malfunction: what triggers it, what it means for HOS records, and required driver and carrier steps under 49 CFR 395.34.

medium high

ELD Engine Synchronization Malfunction

Electronic Logging Device · Engine ECM data connection

FMCSA-sourced explanation of ELD engine synchronization malfunctions: what ECM data the ELD requires, what causes the connection to fail, and required regulatory steps under 49 CFR 395.

medium high

ELD Timing Malfunction

Electronic Logging Device · Time synchronization

FMCSA-sourced explanation of ELD timing compliance malfunctions: UTC synchronization requirements, what causes timing faults, and how they affect HOS record accuracy under 49 CFR 395 Appendix A.

low high

ELD Positioning Malfunction

Electronic Logging Device · Position measurement

FMCSA-sourced explanation of ELD positioning malfunctions: GPS and location requirements, what causes positioning failures, and compliance steps under 49 CFR 395 Appendix A.

medium high

ELD Data Recording Malfunction

Electronic Logging Device · Record storage and retrieval

FMCSA-sourced explanation of ELD data recording malfunctions: what the device must record and retain, what causes this failure, and required steps under 49 CFR 395.34 including record reconstruction.

medium high

ELD Data Transfer Malfunction

Electronic Logging Device · Roadside data transfer

FMCSA-sourced explanation of ELD data transfer malfunctions: required transfer methods, what causes transfer failures, and how to respond at roadside and when planning for repair under 49 CFR 395.

low high

ELD Missing Required Data Elements

Electronic Logging Device · Required log data fields

FMCSA-sourced explanation of the ELD missing required data elements diagnostic event: which fields are required, what causes them to be absent at record creation, and how to respond.

low high

ELD Unidentified Driving Records – Data Diagnostic Event

Electronic Logging Device · Unidentified driver profile

FMCSA-sourced explanation of the ELD unidentified driving records data diagnostic event: what triggers the diagnostic indicator, the 24-hour threshold, how to assign records, and compliance obligations under 49 CFR 395.

high high

Bendix EC-60 UDS 1 / SPN 793 FMI 2

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Open or Shorted. UDS 1, blink code 14-03, SPN 793 FMI 2.

high high

Bendix EC-60 UDS 3 / SPN 793 FMI 13

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Configuration Error. UDS 3, blink code 14-10, SPN 793 FMI 13.

medium high

Bendix EC-60 UDS 4 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (04). UDS 4, blink code 13-14, SPN 629 FMI 12.

high high

Bendix EC-60 UDS 5 / SPN 793 FMI 7

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Wheel End. UDS 5, blink code 14-05, SPN 793 FMI 7.

medium high

Bendix EC-60 UDS 6 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (06). UDS 6, blink code 13-15, SPN 629 FMI 12.

high high

Bendix EC-60 UDS 7 / SPN 793 FMI 1

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Excessive Air Gap. UDS 7, blink code 14-01, SPN 793 FMI 1.

high high

Bendix EC-60 UDS 8 / SPN 793 FMI 14

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Output Low @ Drive-Off. UDS 8, blink code 14-02, SPN 793 FMI 14.

high high

Bendix EC-60 UDS 9 / SPN 793 FMI 8

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Erratic Sensor Signal. UDS 9, blink code 14-06, SPN 793 FMI 8.

high high

Bendix EC-60 UDS 10 / SPN 793 FMI 10

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Left WSS Loss of Sensor Signal. UDS 10, blink code 14-04, SPN 793 FMI 10.

medium high

Bendix EC-60 UDS 13 / SPN 629 FMI 2

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (0D). UDS 13, blink code 13-17, SPN 629 FMI 2.

medium high

Bendix EC-60 UDS 14 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (0E). UDS 14, blink code 13-16, SPN 629 FMI 12.

medium high

Bendix EC-60 UDS 15 / SPN 1808 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: Sensor CAN Supply Voltage Error. UDS 15, blink code 12-14, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 16 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (10). UDS 16, blink code 13-02, SPN 629 FMI 12.

medium high

Bendix EC-60 UDS 17 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (11). UDS 17, blink code 13-03, SPN 629 FMI 12.

medium high

Bendix EC-60 UDS 18 / SPN 629 FMI 2

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (12). UDS 18, blink code 13-04, SPN 629 FMI 2.

medium high

Bendix EC-60 UDS 19 / SPN 629 FMI 2

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (13). UDS 19, blink code 13-05, SPN 629 FMI 2.

medium high

Bendix EC-60 UDS 20 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (14). UDS 20, blink code 13-06, SPN 629 FMI 12.

medium high

Bendix EC-60 UDS 21 / SPN 629 FMI 2

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (15). UDS 21, blink code 13-07, SPN 629 FMI 2.

medium high

Bendix EC-60 UDS 22 / SPN 630 FMI 13

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (16). UDS 22, blink code 13-08, SPN 630 FMI 13.

medium high

Bendix EC-60 UDS 23 / SPN 630 FMI 13

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (17). UDS 23, blink code 13-09, SPN 630 FMI 13.

medium high

Bendix EC-60 UDS 24 / SPN 630 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (18). UDS 24, blink code 13-10, SPN 630 FMI 12.

medium high

Bendix EC-60 UDS 25 / SPN 629 FMI 2

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (19). UDS 25, blink code 13-18, SPN 629 FMI 2.

medium high

Bendix EC-60 UDS 26 / SPN 802 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (1A). UDS 26, blink code 13-11, SPN 802 FMI 12.

medium high

Bendix EC-60 UDS 27 / SPN 802 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (1B). UDS 27, blink code 13-12, SPN 802 FMI 12.

medium high

Bendix EC-60 UDS 28 / SPN 630 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (1C). UDS 28, blink code 13-19, SPN 630 FMI 12.

medium high

Bendix EC-60 UDS 29 / SPN 630 FMI 13

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (1D). UDS 29, blink code 13-21, SPN 630 FMI 13.

medium high

Bendix EC-60 UDS 30 / SPN 630 FMI 13

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (1E). UDS 30, blink code 13-22, SPN 630 FMI 13.

medium high

Bendix EC-60 UDS 32 / SPN 627 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Ignition Voltage Too High. UDS 32, blink code 06-06, SPN 627 FMI 3.

medium high

Bendix EC-60 UDS 33 / SPN 627 FMI 4

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Ignition Voltage Too Low. UDS 33, blink code 06-05, SPN 627 FMI 4.

high high

Bendix EC-60 UDS 34 / SPN 627 FMI 4

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Ignition Voltage Too Low During ABS. UDS 34, blink code 06-07, SPN 627 FMI 4.

medium high

Bendix EC-60 UDS 35 / SPN 627 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Battery Voltage Too High. UDS 35, blink code 06-02, SPN 627 FMI 3.

medium high

Bendix EC-60 UDS 36 / SPN 627 FMI 4

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Battery Voltage Too Low. UDS 36, blink code 06-01, SPN 627 FMI 4.

high high

Bendix EC-60 UDS 37 / SPN 627 FMI 4

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Battery Voltage Too Low During ABS. UDS 37, blink code 06-03, SPN 627 FMI 4.

medium high

Bendix EC-60 UDS 38 / SPN 627 FMI 5

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Battery Voltage Input Open Circuit. UDS 38, blink code 06-04, SPN 627 FMI 5.

medium high

Bendix EC-60 UDS 39 / SPN 630 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (27). UDS 39, blink code 13-20, SPN 630 FMI 12.

medium high

Bendix EC-60 UDS 40 / SPN 630 FMI 13

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (28). UDS 40, blink code 13-23, SPN 630 FMI 13.

high high

Bendix EC-60 UDS 41 / SPN 802 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: PMV Common Shorted to Voltage. UDS 41, blink code 12-08, SPN 802 FMI 3.

high high

Bendix EC-60 UDS 42 / SPN 802 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: PMV Common Shorted to Ground. UDS 42, blink code 12-07, SPN 802 FMI 4.

medium high

Bendix EC-60 UDS 43 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: Timeout or invalid CAN data for ETC7/VP15. UDS 43, blink code 11-07, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 44 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 Invalid Data (Engine/Retarder). UDS 44, blink code 11-04, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 45 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 Supply Pressure. UDS 45, blink code 11-05, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 46 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: Timeout or invalid CAN data - XBR. UDS 46, blink code 11-08, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 48 / SPN 801 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Retarder Relay Circuit Shorted to Voltage. UDS 48, blink code 12-05, SPN 801 FMI 3.

medium high

Bendix EC-60 UDS 49 / SPN 801 FMI 2

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Retarder Relay Open Circuit or Shorted to Ground. UDS 49, blink code 12-04, SPN 801 FMI 2.

medium high

Bendix EC-60 UDS 50 / SPN 807 FMI 5

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: TCV SA Solenoid Open Circuit. UDS 50, blink code 19-02, SPN 807 FMI 5.

medium high

Bendix EC-60 UDS 51 / SPN 639 FMI 12

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 Serial Link. UDS 51, blink code 11-01, SPN 639 FMI 12.

medium high

Bendix EC-60 UDS 52 / SPN 639 FMI 14

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 Retarder. UDS 52, blink code 11-02, SPN 639 FMI 14.

medium high

Bendix EC-60 UDS 53 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 Engine Communications. UDS 53, blink code 11-03, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 54 / SPN 639 FMI 2

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Invalid Data from Transmission. UDS 54, blink code 11-10, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 55 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (37). UDS 55, blink code 13-24, SPN 629 FMI 12.

medium high

Bendix EC-60 UDS 56 / SPN 807 FMI 4

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: TCV SA Solenoid Shorted to Ground. UDS 56, blink code 19-01, SPN 807 FMI 4.

medium high

Bendix EC-60 UDS 57 / SPN 807 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: TCV SA Solenoid Shorted to Voltage. UDS 57, blink code 19-03, SPN 807 FMI 3.

medium high

Bendix EC-60 UDS 58 / SPN 806 FMI 5

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: TCV DA Solenoid Open Circuit. UDS 58, blink code 18-03, SPN 806 FMI 5.

medium high

Bendix EC-60 UDS 59 / SPN 806 FMI 4

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: TCV DA Solenoid Shorted to Ground. UDS 59, blink code 18-01, SPN 806 FMI 4.

medium high

Bendix EC-60 UDS 60 / SPN 806 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: TCV DA Solenoid Shorted to Voltage. UDS 60, blink code 18-02, SPN 806 FMI 3.

medium high

Bendix EC-60 UDS 61 / SPN 806 FMI 13

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: TCV DA Configuration Error. UDS 61, blink code 18-04, SPN 806 FMI 13.

medium high

Bendix EC-60 UDS 62 / SPN 807 FMI 13

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: TCV SA Configuration Error. UDS 62, blink code 19-04, SPN 807 FMI 13.

medium high

Bendix EC-60 UDS 63 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: Timeout or invalid CAN data - AUX I/O. UDS 63, blink code 11-11, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 64 / SPN 1059 FMI 2

ABS / ATC / ESP · Brake demand / load sensor

Brake demand / load sensor fault reference for Bendix EC-60: Open or Shorted Load Sensor. UDS 64, blink code 24-03, SPN 1059 FMI 2.

high high

Bendix EC-60 UDS 65 / SPN 789 FMI 2

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Left WSS Open or Shorted. UDS 65, blink code 02-03, SPN 789 FMI 2.

high high

Bendix EC-60 UDS 66 / SPN 1067 FMI 2

ABS / ATC / ESP · Brake demand / load sensor

Brake demand / load sensor fault reference for Bendix EC-60: Shorted Brake Demand Sensor (Primary CKT) Open. UDS 66, blink code 24-01, SPN 1067 FMI 2.

high high

Bendix EC-60 UDS 67 / SPN 1068 FMI 2

ABS / ATC / ESP · Brake demand / load sensor

Brake demand / load sensor fault reference for Bendix EC-60: Shorted Brake Demand Sensor (Secondary CKT) Open. UDS 67, blink code 24-02, SPN 1068 FMI 2.

high high

Bendix EC-60 UDS 68 / SPN 1067 FMI 11

ABS / ATC / ESP · Brake demand / load sensor

Brake demand / load sensor fault reference for Bendix EC-60: Plausibility Error Brake Demand Sensor. UDS 68, blink code 24-04, SPN 1067 FMI 11.

high high

Bendix EC-60 UDS 69 / SPN 789 FMI 7

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Left WSS Wheel End. UDS 69, blink code 02-05, SPN 789 FMI 7.

medium high

Bendix EC-60 UDS 70 / SPN 1067 FMI 2

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: PS Supply Voltage Error. UDS 70, blink code 24-05, SPN 1067 FMI 2.

high high

Bendix EC-60 UDS 71 / SPN 789 FMI 1

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Left WSS Excessive Air Gap. UDS 71, blink code 02-01, SPN 789 FMI 1.

high high

Bendix EC-60 UDS 72 / SPN 789 FMI 14

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Left WSS Output Low @ Drive-Off. UDS 72, blink code 02-02, SPN 789 FMI 14.

high high

Bendix EC-60 UDS 73 / SPN 789 FMI 8

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Left WSS Erratic Sensor Signal. UDS 73, blink code 02-06, SPN 789 FMI 8.

high high

Bendix EC-60 UDS 74 / SPN 789 FMI 10

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Left WSS Loss of Sensor Signal. UDS 74, blink code 02-04, SPN 789 FMI 10.

medium high

Bendix EC-60 UDS 77 / SPN 1809 FMI 13

ABS / ATC / ESP · Lateral acceleration sensor

Lateral acceleration sensor fault reference for Bendix EC-60: LAS Calibration in Progress. UDS 77, blink code 23-02, SPN 1809 FMI 13.

medium high

Bendix EC-60 UDS 78 / SPN 1808 FMI 14

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Erratic ESP Sensor Signal. UDS 78, blink code 23-07, SPN 1808 FMI 14.

medium high

Bendix EC-60 UDS 79 / SPN 1807 FMI 13

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Calibration in Progress. UDS 79, blink code 21-02, SPN 1807 FMI 13.

medium high

Bendix EC-60 UDS 80 / SPN 1807 FMI 13

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Not Calibrated. UDS 80, blink code 21-01, SPN 1807 FMI 13.

high high

Bendix EC-60 UDS 81 / SPN 795 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV HLD Solenoid Open Circuit. UDS 81, blink code 07-06, SPN 795 FMI 5.

high high

Bendix EC-60 UDS 82 / SPN 795 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV HLD Solenoid Shorted to Ground. UDS 82, blink code 07-04, SPN 795 FMI 4.

high high

Bendix EC-60 UDS 83 / SPN 795 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV HLD Solenoid Shorted to Voltage. UDS 83, blink code 07-05, SPN 795 FMI 3.

high high

Bendix EC-60 UDS 84 / SPN 795 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV CMN Open Circuit. UDS 84, blink code 07-07, SPN 795 FMI 5.

high high

Bendix EC-60 UDS 85 / SPN 795 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV REL Solenoid Open Circuit. UDS 85, blink code 07-03, SPN 795 FMI 5.

high high

Bendix EC-60 UDS 86 / SPN 795 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV REL Solenoid Shorted to Ground. UDS 86, blink code 07-01, SPN 795 FMI 4.

high high

Bendix EC-60 UDS 87 / SPN 795 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV REL Solenoid Shorted to Voltage. UDS 87, blink code 07-02, SPN 795 FMI 3.

medium high

Bendix EC-60 UDS 88 / SPN 1807 FMI 9

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: SAS CAN Timeout. UDS 88, blink code 21-08, SPN 1807 FMI 9.

medium high

Bendix EC-60 UDS 89 / SPN 1807 FMI 2

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Signal Out of Range. UDS 89, blink code 21-04, SPN 1807 FMI 2.

medium high

Bendix EC-60 UDS 90 / SPN 1807 FMI 12

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Invalid Signal. UDS 90, blink code 21-06, SPN 1807 FMI 12.

medium high

Bendix EC-60 UDS 91 / SPN 1807 FMI 2

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Gradient Error. UDS 91, blink code 21-07, SPN 1807 FMI 2.

medium high

Bendix EC-60 UDS 92 / SPN 1807 FMI 2

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Long Term Calibration Error. UDS 92, blink code 21-09, SPN 1807 FMI 2.

high high

Bendix EC-60 UDS 93 / SPN 795 FMI 13

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Left PMV Configuration Error. UDS 93, blink code 07-08, SPN 795 FMI 13.

medium high

Bendix EC-60 UDS 94 / SPN 1807 FMI 2

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Static Signal. UDS 94, blink code 21-03, SPN 1807 FMI 2.

medium high

Bendix EC-60 UDS 95 / SPN 1807 FMI 2

ABS / ATC / ESP · Steering angle sensor

Steering angle sensor fault reference for Bendix EC-60: SAS Signal Reversed. UDS 95, blink code 21-05, SPN 1807 FMI 2.

medium high

Bendix EC-60 UDS 96 / SPN 1807 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: SAS Plausibility Check (Ref Yaw Rate). UDS 96, blink code 21-10, SPN 1807 FMI 2.

high high

Bendix EC-60 UDS 97 / SPN 792 FMI 2

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Right WSS Open or Shorted. UDS 97, blink code 05-03, SPN 792 FMI 2.

medium high

Bendix EC-60 UDS 98 / SPN 1808 FMI 9

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: YRS CAN Timeout. UDS 98, blink code 22-05, SPN 1808 FMI 9.

medium high

Bendix EC-60 UDS 99 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Signal Out of Range. UDS 99, blink code 22-01, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 100 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Invalid Signal. UDS 100, blink code 22-03, SPN 1808 FMI 2.

high high

Bendix EC-60 UDS 101 / SPN 792 FMI 7

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Right WSS Wheel End. UDS 101, blink code 05-05, SPN 792 FMI 7.

medium high

Bendix EC-60 UDS 102 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Static BITE Error. UDS 102, blink code 22-06, SPN 1808 FMI 2.

high high

Bendix EC-60 UDS 103 / SPN 792 FMI 1

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Right WSS Excessive Air Gap. UDS 103, blink code 05-01, SPN 792 FMI 1.

high high

Bendix EC-60 UDS 104 / SPN 792 FMI 14

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Right WSS Output Low @ Drive-Off. UDS 104, blink code 05-02, SPN 792 FMI 14.

high high

Bendix EC-60 UDS 105 / SPN 792 FMI 8

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Right WSS Erratic Sensor Signal. UDS 105, blink code 05-06, SPN 792 FMI 8.

high high

Bendix EC-60 UDS 106 / SPN 792 FMI 10

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Right WSS Loss of Sensor Signal. UDS 106, blink code 05-04, SPN 792 FMI 10.

medium high

Bendix EC-60 UDS 109 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Dynamic BITE Error. UDS 109, blink code 22-07, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 110 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Gradient Error. UDS 110, blink code 22-04, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 111 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Fast Calibration Error. UDS 111, blink code 22-08, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 112 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Static Calibration Error. UDS 112, blink code 22-09, SPN 1808 FMI 2.

high high

Bendix EC-60 UDS 113 / SPN 798 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV HLD Solenoid Open Circuit. UDS 113, blink code 10-06, SPN 798 FMI 5.

high high

Bendix EC-60 UDS 114 / SPN 798 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV HLD Solenoid Shorted to Ground. UDS 114, blink code 10-04, SPN 798 FMI 4.

high high

Bendix EC-60 UDS 115 / SPN 798 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV HLD Solenoid Shorted to Voltage. UDS 115, blink code 10-05, SPN 798 FMI 3.

high high

Bendix EC-60 UDS 116 / SPN 798 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV CMN Open Circuit. UDS 116, blink code 10-07, SPN 798 FMI 5.

high high

Bendix EC-60 UDS 117 / SPN 798 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV REL Solenoid Open Circuit. UDS 117, blink code 10-03, SPN 798 FMI 5.

high high

Bendix EC-60 UDS 118 / SPN 798 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV REL Solenoid Shorted to Ground. UDS 118, blink code 10-01, SPN 798 FMI 4.

high high

Bendix EC-60 UDS 119 / SPN 798 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV REL Solenoid Shorted to Voltage. UDS 119, blink code 10-02, SPN 798 FMI 3.

medium high

Bendix EC-60 UDS 120 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Normal Calibration Error. UDS 120, blink code 22-10, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 121 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Sensitivity Calibration Error. UDS 121, blink code 22-11, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 122 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Plausibility Check (Ref Yaw Rate). UDS 122, blink code 22-12, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 123 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Sensor Reversed Signal. UDS 123, blink code 22-02, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 124 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Plausibility Error (Inside Model Based Limits). UDS 124, blink code 22-13, SPN 1808 FMI 2.

high high

Bendix EC-60 UDS 125 / SPN 798 FMI 13

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Right PMV Configuration Error. UDS 125, blink code 10-08, SPN 798 FMI 13.

medium high

Bendix EC-60 UDS 126 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Plausibility Error (Outside Model Based Limits). UDS 126, blink code 22-14, SPN 1808 FMI 2.

medium high

Bendix EC-60 UDS 127 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 ESP Messages Invalid Data. UDS 127, blink code 11-06, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 128 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU (80). UDS 128, blink code 13-13, SPN 629 FMI 12.

high high

Bendix EC-60 UDS 129 / SPN 790 FMI 2

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Right WSS Open or Shorted. UDS 129, blink code 03-03, SPN 790 FMI 2.

medium high

Bendix EC-60 UDS 130 / SPN 627 FMI 2

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Input Voltage Excessive Noise (Temp.). UDS 130, blink code 06-08, SPN 627 FMI 2.

medium high

Bendix EC-60 UDS 131 / SPN 627 FMI 14

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Input Voltage Excessive Noise (Latched). UDS 131, blink code 06-09, SPN 627 FMI 14.

medium high

Bendix EC-60 UDS 132 / SPN 1808 FMI 2

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: ESP Sensor Voltage Out of Range. UDS 132, blink code 12-22, SPN 1808 FMI 2.

high high

Bendix EC-60 UDS 133 / SPN 790 FMI 7

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Right WSS Wheel End. UDS 133, blink code 03-05, SPN 790 FMI 7.

medium high

Bendix EC-60 UDS 134 / SPN 1067 FMI 7

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: PS Not Calibrated. UDS 134, blink code 24-06, SPN 1067 FMI 7.

high high

Bendix EC-60 UDS 135 / SPN 790 FMI 1

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Right WSS Excessive Air Gap. UDS 135, blink code 03-01, SPN 790 FMI 1.

high high

Bendix EC-60 UDS 136 / SPN 790 FMI 14

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Right WSS Output Low @ Drive-Off. UDS 136, blink code 03-02, SPN 790 FMI 14.

high high

Bendix EC-60 UDS 137 / SPN 790 FMI 8

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Right WSS Erratic Sensor Signal. UDS 137, blink code 03-06, SPN 790 FMI 8.

high high

Bendix EC-60 UDS 138 / SPN 790 FMI 10

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: SA Right WSS Loss of Sensor Signal. UDS 138, blink code 03-04, SPN 790 FMI 10.

medium high

Bendix EC-60 UDS 141 / SPN 629 FMI 12

ABS / ATC / ESP · ABS electronic control unit

ABS electronic control unit fault reference for Bendix EC-60: ECU Internal VIN Mismatch. UDS 141, blink code 13-25, SPN 629 FMI 12.

medium high

Bendix EC-60 UDS 143 / SPN 1808 FMI 13

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: YRS Sign Check Not Finished. UDS 143, blink code 22-15, SPN 1808 FMI 13.

high high

Bendix EC-60 UDS 144 / SPN 614 FMI 3

ABS / ATC / ESP · Stop lamp switch or output

Stop lamp switch or output fault reference for Bendix EC-60: i/o 2 or i/o 3 shorted high or Stop Lamp Output Error. UDS 144, blink code 12-23, SPN 614 FMI 3.

high high

Bendix EC-60 UDS 145 / SPN 796 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV HLD Solenoid Open Circuit. UDS 145, blink code 08-06, SPN 796 FMI 5.

high high

Bendix EC-60 UDS 146 / SPN 796 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV HLD Solenoid Shorted to Ground. UDS 146, blink code 08-04, SPN 796 FMI 4.

high high

Bendix EC-60 UDS 147 / SPN 796 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV HLD Solenoid Shorted to Voltage. UDS 147, blink code 08-05, SPN 796 FMI 3.

high high

Bendix EC-60 UDS 148 / SPN 796 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV CMN Open Circuit. UDS 148, blink code 08-07, SPN 796 FMI 5.

high high

Bendix EC-60 UDS 149 / SPN 796 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV REL Solenoid Open Circuit. UDS 149, blink code 08-03, SPN 796 FMI 5.

high high

Bendix EC-60 UDS 150 / SPN 796 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV REL Solenoid Shorted to Ground. UDS 150, blink code 08-01, SPN 796 FMI 4.

high high

Bendix EC-60 UDS 151 / SPN 796 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV REL Solenoid Shorted to Voltage. UDS 151, blink code 08-02, SPN 796 FMI 3.

medium high

Bendix EC-60 UDS 155 / SPN 639 FMI 2

ABS / ATC / ESP · J1939 / CAN communication

J1939 / CAN communication fault reference for Bendix EC-60: J1939 HSA switch error or unavailable. UDS 155, blink code 11-12, SPN 639 FMI 2.

medium high

Bendix EC-60 UDS 156 / SPN 2622 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Hill Start Assist solenoid shorted to voltage. UDS 156, blink code 12-24, SPN 2622 FMI 3.

high high

Bendix EC-60 UDS 157 / SPN 796 FMI 13

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: SA Right PMV Configuration Error. UDS 157, blink code 08-08, SPN 796 FMI 13.

medium high

Bendix EC-60 UDS 158 / SPN 2622 FMI 5

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Hill Start Assist solenoid shorted to ground or open circuit. UDS 158, blink code 12-25, SPN 2622 FMI 5.

high high

Bendix EC-60 UDS 161 / SPN 791 FMI 2

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Left WSS Open or Shorted. UDS 161, blink code 04-03, SPN 791 FMI 2.

high high

Bendix EC-60 UDS 165 / SPN 791 FMI 7

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Left WSS Wheel End. UDS 165, blink code 04-05, SPN 791 FMI 7.

high high

Bendix EC-60 UDS 167 / SPN 791 FMI 1

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Left WSS Excessive Air Gap. UDS 167, blink code 04-01, SPN 791 FMI 1.

high high

Bendix EC-60 UDS 168 / SPN 791 FMI 14

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Left WSS Output Low @ Drive-Off. UDS 168, blink code 04-02, SPN 791 FMI 14.

high high

Bendix EC-60 UDS 169 / SPN 791 FMI 8

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Left WSS Erratic Sensor Signal. UDS 169, blink code 04-06, SPN 791 FMI 8.

high high

Bendix EC-60 UDS 170 / SPN 791 FMI 10

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: DA Left WSS Loss of Sensor Signal. UDS 170, blink code 04-04, SPN 791 FMI 10.

medium high

Bendix EC-60 UDS 174 / SPN 1808 FMI 2

ABS / ATC / ESP · Yaw rate sensor

Yaw rate sensor fault reference for Bendix EC-60: Yaw Rate Sensor Vibration Detected. UDS 174, blink code 22-16, SPN 1808 FMI 2.

high high

Bendix EC-60 UDS 175 / SPN 614 FMI 14

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: ATC Disabled to Prevent Brake Fade. UDS 175, blink code 12-09, SPN 614 FMI 14.

high high

Bendix EC-60 UDS 177 / SPN 797 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV HLD Solenoid Open Circuit. UDS 177, blink code 09-06, SPN 797 FMI 5.

high high

Bendix EC-60 UDS 178 / SPN 797 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV HLD Solenoid Shorted to Ground. UDS 178, blink code 09-04, SPN 797 FMI 4.

high high

Bendix EC-60 UDS 179 / SPN 797 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV HLD Solenoid Shorted to Voltage. UDS 179, blink code 09-05, SPN 797 FMI 3.

high high

Bendix EC-60 UDS 180 / SPN 797 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV CMN Open Circuit. UDS 180, blink code 09-07, SPN 797 FMI 5.

high high

Bendix EC-60 UDS 181 / SPN 797 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV REL Solenoid Open Circuit. UDS 181, blink code 09-03, SPN 797 FMI 5.

high high

Bendix EC-60 UDS 182 / SPN 797 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV REL Solenoid Shorted to Ground. UDS 182, blink code 09-01, SPN 797 FMI 4.

high high

Bendix EC-60 UDS 183 / SPN 797 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV REL Solenoid Shorted to Voltage. UDS 183, blink code 09-02, SPN 797 FMI 3.

high high

Bendix EC-60 UDS 189 / SPN 797 FMI 13

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: DA Left PMV Configuration Error. UDS 189, blink code 09-08, SPN 797 FMI 13.

high high

Bendix EC-60 UDS 192 / SPN 1056 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV HLD Solenoid Open Circuit. UDS 192, blink code 20-06, SPN 1056 FMI 5.

high high

Bendix EC-60 UDS 193 / SPN 794 FMI 2

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Open or Shorted. UDS 193, blink code 15-03, SPN 794 FMI 2.

high high

Bendix EC-60 UDS 194 / SPN 1056 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV HLD Solenoid Shorted to Ground. UDS 194, blink code 20-04, SPN 1056 FMI 4.

high high

Bendix EC-60 UDS 195 / SPN 794 FMI 13

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Configuration Error. UDS 195, blink code 15-10, SPN 794 FMI 13.

high high

Bendix EC-60 UDS 196 / SPN 1056 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV HLD Solenoid Shorted to Voltage. UDS 196, blink code 20-05, SPN 1056 FMI 3.

high high

Bendix EC-60 UDS 197 / SPN 794 FMI 7

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Wheel End. UDS 197, blink code 15-05, SPN 794 FMI 7.

high high

Bendix EC-60 UDS 198 / SPN 1056 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV CMN Open Circuit. UDS 198, blink code 20-07, SPN 1056 FMI 5.

high high

Bendix EC-60 UDS 199 / SPN 794 FMI 1

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Excessive Air Gap. UDS 199, blink code 15-01, SPN 794 FMI 1.

high high

Bendix EC-60 UDS 200 / SPN 794 FMI 14

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Output Low @ Drive-Off. UDS 200, blink code 15-02, SPN 794 FMI 14.

high high

Bendix EC-60 UDS 201 / SPN 794 FMI 8

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Erratic Sensor Signal. UDS 201, blink code 15-06, SPN 794 FMI 8.

high high

Bendix EC-60 UDS 202 / SPN 794 FMI 10

ABS / ATC / ESP · Wheel speed sensor

Wheel speed sensor fault reference for Bendix EC-60: AA Right WSS Loss of Sensor Signal. UDS 202, blink code 15-04, SPN 794 FMI 10.

high high

Bendix EC-60 UDS 205 / SPN 1056 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV REL Solenoid Open Circuit. UDS 205, blink code 20-03, SPN 1056 FMI 5.

high high

Bendix EC-60 UDS 206 / SPN 1056 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV REL Solenoid Shorted to Ground. UDS 206, blink code 20-01, SPN 1056 FMI 4.

high high

Bendix EC-60 UDS 207 / SPN 1056 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: Trailer PMV REL Solenoid Shorted to Voltage. UDS 207, blink code 20-02, SPN 1056 FMI 3.

high high

Bendix EC-60 UDS 209 / SPN 811 FMI 2

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: ABS Indicator Lamp Circuit. UDS 209, blink code 12-06, SPN 811 FMI 2.

medium high

Bendix EC-60 UDS 210 / SPN 1069 FMI 13

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Tire Size Out of Range (Front to Rear). UDS 210, blink code 12-10, SPN 1069 FMI 13.

medium high

Bendix EC-60 UDS 212 / SPN 810 FMI 7

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Wheel Speed Sensors Reversed on an Axle. UDS 212, blink code 12-11, SPN 810 FMI 7.

high high

Bendix EC-60 UDS 213 / SPN 1045 FMI 7

ABS / ATC / ESP · Stop lamp switch or output

Stop lamp switch or output fault reference for Bendix EC-60: Stop Lamp Switch Not Detected. UDS 213, blink code 12-01, SPN 1045 FMI 7.

medium high

Bendix EC-60 UDS 214 / SPN 576 FMI 14

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: ATC Disabled or Dynamometer Test Mode Active. UDS 214, blink code 12-03, SPN 576 FMI 14.

high high

Bendix EC-60 UDS 216 / SPN 1045 FMI 2

ABS / ATC / ESP · Stop lamp switch or output

Stop lamp switch or output fault reference for Bendix EC-60: Stop Lamp Switch Defective. UDS 216, blink code 12-02, SPN 1045 FMI 2.

medium high

Bendix EC-60 UDS 220 / SPN 564 FMI 3

ABS / ATC / ESP · ABS power supply

ABS power supply fault reference for Bendix EC-60: Diff Lock Solenoid Shorted to Voltage (total shutdown). UDS 220, blink code 12-13, SPN 564 FMI 3.

medium high

Bendix EC-60 UDS 221 / SPN 564 FMI 5

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Diff Lock Shorted to Ground or Open Circuit. UDS 221, blink code 12-12, SPN 564 FMI 5.

high high

Bendix EC-60 UDS 225 / SPN 799 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV HLD Solenoid Open Circuit. UDS 225, blink code 16-06, SPN 799 FMI 5.

high high

Bendix EC-60 UDS 226 / SPN 799 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV HLD Solenoid Shorted to Ground. UDS 226, blink code 16-04, SPN 799 FMI 4.

high high

Bendix EC-60 UDS 227 / SPN 799 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV HLD Solenoid Shorted to Voltage. UDS 227, blink code 16-05, SPN 799 FMI 3.

high high

Bendix EC-60 UDS 228 / SPN 799 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV CMN Open Circuit. UDS 228, blink code 16-07, SPN 799 FMI 5.

high high

Bendix EC-60 UDS 229 / SPN 799 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV REL Solenoid Open Circuit. UDS 229, blink code 16-03, SPN 799 FMI 5.

high high

Bendix EC-60 UDS 230 / SPN 799 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV REL Solenoid Shorted to Ground. UDS 230, blink code 16-01, SPN 799 FMI 4.

high high

Bendix EC-60 UDS 231 / SPN 799 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV REL Solenoid Shorted to Voltage. UDS 231, blink code 16-02, SPN 799 FMI 3.

high high

Bendix EC-60 UDS 237 / SPN 799 FMI 13

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Left PMV Configuration Error. UDS 237, blink code 16-08, SPN 799 FMI 13.

medium high

Bendix EC-60 UDS 238 / SPN 615 FMI 14

ABS / ATC / ESP · ABS / ATC / ESP controller

ABS / ATC / ESP controller fault reference for Bendix EC-60: Maximum number of PCV cycles reached. UDS 238, blink code 13-26, SPN 615 FMI 14.

medium high

Bendix EC-60 UDS 239 / SPN 615 FMI 14

ABS / ATC / ESP · Traction control valve

Traction control valve fault reference for Bendix EC-60: Maximum number of TCV cycles reached. UDS 239, blink code 13-27, SPN 615 FMI 14.

medium high

Bendix EC-60 UDS 240 / SPN 1809 FMI 2

ABS / ATC / ESP · Lateral acceleration sensor

Lateral acceleration sensor fault reference for Bendix EC-60: LAS Signal Out of Range. UDS 240, blink code 23-01, SPN 1809 FMI 2.

high high

Bendix EC-60 UDS 241 / SPN 800 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV HLD Solenoid Open Circuit. UDS 241, blink code 17-06, SPN 800 FMI 5.

high high

Bendix EC-60 UDS 242 / SPN 800 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV HLD Solenoid Shorted to Ground. UDS 242, blink code 17-04, SPN 800 FMI 4.

high high

Bendix EC-60 UDS 243 / SPN 800 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV HLD Solenoid Shorted to Voltage. UDS 243, blink code 17-05, SPN 800 FMI 3.

high high

Bendix EC-60 UDS 244 / SPN 800 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV CMN Open Circuit. UDS 244, blink code 17-07, SPN 800 FMI 5.

high high

Bendix EC-60 UDS 245 / SPN 800 FMI 5

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV REL Solenoid Open Circuit. UDS 245, blink code 17-03, SPN 800 FMI 5.

high high

Bendix EC-60 UDS 246 / SPN 800 FMI 4

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV REL Solenoid Shorted to Ground. UDS 246, blink code 17-01, SPN 800 FMI 4.

high high

Bendix EC-60 UDS 247 / SPN 800 FMI 3

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV REL Solenoid Shorted to Voltage. UDS 247, blink code 17-02, SPN 800 FMI 3.

medium high

Bendix EC-60 UDS 248 / SPN 1809 FMI 2

ABS / ATC / ESP · Lateral acceleration sensor

Lateral acceleration sensor fault reference for Bendix EC-60: LAS Long Term Calibration Error. UDS 248, blink code 23-04, SPN 1809 FMI 2.

medium high

Bendix EC-60 UDS 249 / SPN 1809 FMI 2

ABS / ATC / ESP · Lateral acceleration sensor

Lateral acceleration sensor fault reference for Bendix EC-60: LAS Static Calibration Error. UDS 249, blink code 23-03, SPN 1809 FMI 2.

medium high

Bendix EC-60 UDS 250 / SPN 1809 FMI 2

ABS / ATC / ESP · Lateral acceleration sensor

Lateral acceleration sensor fault reference for Bendix EC-60: LAS Plausibility Error (Inside Model Based Limits). UDS 250, blink code 23-05, SPN 1809 FMI 2.

medium high

Bendix EC-60 UDS 251 / SPN 1809 FMI 2

ABS / ATC / ESP · Lateral acceleration sensor

Lateral acceleration sensor fault reference for Bendix EC-60: LAS Plausibility Error (Outside Model Based Limits). UDS 251, blink code 23-06, SPN 1809 FMI 2.

high high

Bendix EC-60 UDS 253 / SPN 800 FMI 13

ABS / ATC / ESP · Pressure modulator valve

Pressure modulator valve fault reference for Bendix EC-60: AA Right PMV Configuration Error. UDS 253, blink code 17-08, SPN 800 FMI 13.

high high

WABCO MM-0112 SPN 789 FMI 1

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 1 (SID 1): Left Front WSS, air gap or low wheel-speed sensor signal.

high high

WABCO MM-0112 SPN 789 FMI 2

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 2 (SID 1): Left Front WSS, wheel-speed sensor data erratic, intermittent, or incorrect.

high high

WABCO MM-0112 SPN 789 FMI 3

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 3 (SID 1): Left Front WSS, wheel-speed sensor circuit shorted to supply voltage.

high high

WABCO MM-0112 SPN 789 FMI 4

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 4 (SID 1): Left Front WSS, wheel-speed sensor circuit shorted to ground.

high high

WABCO MM-0112 SPN 789 FMI 5

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 5 (SID 1): Left Front WSS, wheel-speed sensor open circuit.

high high

WABCO MM-0112 SPN 789 FMI 7

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 7 (SID 1): Left Front WSS, tone ring or wheel-end signal concern.

high high

WABCO MM-0112 SPN 789 FMI 10

ABS / ESC · Left Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 789 FMI 10 (SID 1): Left Front WSS, wheel-speed sensor signal drop-out.

high high

WABCO MM-0112 SPN 790 FMI 1

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 1 (SID 2): Right Front WSS, air gap or low wheel-speed sensor signal.

high high

WABCO MM-0112 SPN 790 FMI 2

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 2 (SID 2): Right Front WSS, wheel-speed sensor data erratic, intermittent, or incorrect.

high high

WABCO MM-0112 SPN 790 FMI 3

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 3 (SID 2): Right Front WSS, wheel-speed sensor circuit shorted to supply voltage.

high high

WABCO MM-0112 SPN 790 FMI 4

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 4 (SID 2): Right Front WSS, wheel-speed sensor circuit shorted to ground.

high high

WABCO MM-0112 SPN 790 FMI 5

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 5 (SID 2): Right Front WSS, wheel-speed sensor open circuit.

high high

WABCO MM-0112 SPN 790 FMI 7

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 7 (SID 2): Right Front WSS, tone ring or wheel-end signal concern.

high high

WABCO MM-0112 SPN 790 FMI 10

ABS / ESC · Right Front WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 790 FMI 10 (SID 2): Right Front WSS, wheel-speed sensor signal drop-out.

high high

WABCO MM-0112 SPN 791 FMI 1

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 1 (SID 3): Left Rear WSS, air gap or low wheel-speed sensor signal.

high high

WABCO MM-0112 SPN 791 FMI 2

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 2 (SID 3): Left Rear WSS, wheel-speed sensor data erratic, intermittent, or incorrect.

high high

WABCO MM-0112 SPN 791 FMI 3

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 3 (SID 3): Left Rear WSS, wheel-speed sensor circuit shorted to supply voltage.

high high

WABCO MM-0112 SPN 791 FMI 4

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 4 (SID 3): Left Rear WSS, wheel-speed sensor circuit shorted to ground.

high high

WABCO MM-0112 SPN 791 FMI 5

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 5 (SID 3): Left Rear WSS, wheel-speed sensor open circuit.

high high

WABCO MM-0112 SPN 791 FMI 7

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 7 (SID 3): Left Rear WSS, tone ring or wheel-end signal concern.

high high

WABCO MM-0112 SPN 791 FMI 10

ABS / ESC · Left Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 791 FMI 10 (SID 3): Left Rear WSS, wheel-speed sensor signal drop-out.

high high

WABCO MM-0112 SPN 792 FMI 1

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 1 (SID 4): Right Rear WSS, air gap or low wheel-speed sensor signal.

high high

WABCO MM-0112 SPN 792 FMI 2

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 2 (SID 4): Right Rear WSS, wheel-speed sensor data erratic, intermittent, or incorrect.

high high

WABCO MM-0112 SPN 792 FMI 3

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 3 (SID 4): Right Rear WSS, wheel-speed sensor circuit shorted to supply voltage.

high high

WABCO MM-0112 SPN 792 FMI 4

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 4 (SID 4): Right Rear WSS, wheel-speed sensor circuit shorted to ground.

high high

WABCO MM-0112 SPN 792 FMI 5

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 5 (SID 4): Right Rear WSS, wheel-speed sensor open circuit.

high high

WABCO MM-0112 SPN 792 FMI 7

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 7 (SID 4): Right Rear WSS, tone ring or wheel-end signal concern.

high high

WABCO MM-0112 SPN 792 FMI 10

ABS / ESC · Right Rear WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 792 FMI 10 (SID 4): Right Rear WSS, wheel-speed sensor signal drop-out.

high high

WABCO MM-0112 SPN 793 FMI 1

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 1 (SID 5): Left Third Axle WSS, air gap or low wheel-speed sensor signal.

high high

WABCO MM-0112 SPN 793 FMI 2

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 2 (SID 5): Left Third Axle WSS, wheel-speed sensor data erratic, intermittent, or incorrect.

high high

WABCO MM-0112 SPN 793 FMI 3

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 3 (SID 5): Left Third Axle WSS, wheel-speed sensor circuit shorted to supply voltage.

high high

WABCO MM-0112 SPN 793 FMI 4

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 4 (SID 5): Left Third Axle WSS, wheel-speed sensor circuit shorted to ground.

high high

WABCO MM-0112 SPN 793 FMI 5

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 5 (SID 5): Left Third Axle WSS, wheel-speed sensor open circuit.

high high

WABCO MM-0112 SPN 793 FMI 7

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 7 (SID 5): Left Third Axle WSS, tone ring or wheel-end signal concern.

high high

WABCO MM-0112 SPN 793 FMI 10

ABS / ESC · Left Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 793 FMI 10 (SID 5): Left Third Axle WSS, wheel-speed sensor signal drop-out.

high high

WABCO MM-0112 SPN 794 FMI 1

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 1 (SID 6): Right Third Axle WSS, air gap or low wheel-speed sensor signal.

high high

WABCO MM-0112 SPN 794 FMI 2

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 2 (SID 6): Right Third Axle WSS, wheel-speed sensor data erratic, intermittent, or incorrect.

high high

WABCO MM-0112 SPN 794 FMI 3

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 3 (SID 6): Right Third Axle WSS, wheel-speed sensor circuit shorted to supply voltage.

high high

WABCO MM-0112 SPN 794 FMI 4

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 4 (SID 6): Right Third Axle WSS, wheel-speed sensor circuit shorted to ground.

high high

WABCO MM-0112 SPN 794 FMI 5

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 5 (SID 6): Right Third Axle WSS, wheel-speed sensor open circuit.

high high

WABCO MM-0112 SPN 794 FMI 7

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 7 (SID 6): Right Third Axle WSS, tone ring or wheel-end signal concern.

high high

WABCO MM-0112 SPN 794 FMI 10

ABS / ESC · Right Third Axle WSS

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 794 FMI 10 (SID 6): Right Third Axle WSS, wheel-speed sensor signal drop-out.

medium high

WABCO MM-0112 SPN 639 FMI 2

ABS / ESC · J1939 data link

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 639 FMI 2 (SID 231): J1939 data link, invalid or erratic J1939 data.

medium high

WABCO MM-0112 SPN 639 FMI 5

ABS / ESC · J1939 data link

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 639 FMI 5 (SID 231): J1939 data link, J1939 data link open circuit or low-current condition.

medium high

WABCO MM-0112 SPN 639 FMI 6

ABS / ESC · J1939 data link

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 639 FMI 6 (SID 231): J1939 data link, J1939 data link short or high-current condition.

medium high

WABCO MM-0112 SPN 639 FMI 14

ABS / ESC · J1939 data link

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 639 FMI 14 (SID 231): J1939 data link, J1939 ESC1 or related message timeout.

high high

WABCO MM-0112 SPN 627 FMI 3

ABS / ESC · ABS power supply

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 627 FMI 3 (SID 251): ABS power supply, power supply voltage above normal.

high high

WABCO MM-0112 SPN 630 FMI 12

ABS / ESC · ABS ECU / EEPROM

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 630 FMI 12 (SID 253): ABS ECU / EEPROM, ECU memory or parameter data fault.

high high

WABCO MM-0112 SPN 630 FMI 13

ABS / ESC · ABS ECU / EEPROM

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 630 FMI 13 (SID 253): ABS ECU / EEPROM, ECU parameter or configuration mismatch.

high high

WABCO MM-0112 SPN 630 FMI 14

ABS / ESC · ABS ECU / EEPROM

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 630 FMI 14 (SID 253): ABS ECU / EEPROM, special instruction or configuration-related ECU fault.

high high

WABCO MM-0112 SPN 629 FMI 5

ABS / ESC · ABS electronic control unit

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 629 FMI 5 (SID 254): ABS electronic control unit, internal ECU or load-monitoring fault with low current.

high high

WABCO MM-0112 SPN 629 FMI 12

ABS / ESC · ABS electronic control unit

Source-backed WABCO MM-0112 ABS/ESC fault-code page for SPN 629 FMI 12 (SID 254): ABS electronic control unit, internal ECU fault condition.

high high

WABCO RSSplus SID 3 FMI 1

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 1 for Wheel Sensor c: sensor signal too low. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 2

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 2 for Wheel Sensor c: sensor data erratic or incorrect. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 3

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 3 for Wheel Sensor c: sensor circuit shorted to supply voltage. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 4

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 4 for Wheel Sensor c: sensor circuit shorted to ground. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 5

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 5 for Wheel Sensor c: sensor open circuit or interrupted signal. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 6

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 6 for Wheel Sensor c: sensor circuit high current. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 7

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 7 for Wheel Sensor c: tone ring or wheel-end signal concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 8

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 8 for Wheel Sensor c: excessive wheel slip indication. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 10

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 10 for Wheel Sensor c: sensor signal drop-out. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 11

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 11 for Wheel Sensor c: abnormal speed signal or chatter. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 12

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 12 for Wheel Sensor c: non-plausible wheel-speed frequency. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 3 FMI 13

Trailer ABS / RSSplus · Wheel Sensor c

Source-backed explanation of WABCO RSSplus SID 3 FMI 13 for Wheel Sensor c: sensor signal characteristic or configuration concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 1

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 1 for Wheel Sensor d: sensor signal too low. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 2

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 2 for Wheel Sensor d: sensor data erratic or incorrect. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 3

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 3 for Wheel Sensor d: sensor circuit shorted to supply voltage. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 4

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 4 for Wheel Sensor d: sensor circuit shorted to ground. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 5

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 5 for Wheel Sensor d: sensor open circuit or interrupted signal. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 6

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 6 for Wheel Sensor d: sensor circuit high current. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 7

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 7 for Wheel Sensor d: tone ring or wheel-end signal concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 8

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 8 for Wheel Sensor d: excessive wheel slip indication. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 10

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 10 for Wheel Sensor d: sensor signal drop-out. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 11

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 11 for Wheel Sensor d: abnormal speed signal or chatter. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 12

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 12 for Wheel Sensor d: non-plausible wheel-speed frequency. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 4 FMI 13

Trailer ABS / RSSplus · Wheel Sensor d

Source-backed explanation of WABCO RSSplus SID 4 FMI 13 for Wheel Sensor d: sensor signal characteristic or configuration concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 1

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 1 for Wheel Sensor e: sensor signal too low. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 2

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 2 for Wheel Sensor e: sensor data erratic or incorrect. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 3

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 3 for Wheel Sensor e: sensor circuit shorted to supply voltage. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 4

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 4 for Wheel Sensor e: sensor circuit shorted to ground. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 5

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 5 for Wheel Sensor e: sensor open circuit or interrupted signal. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 6

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 6 for Wheel Sensor e: sensor circuit high current. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 7

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 7 for Wheel Sensor e: tone ring or wheel-end signal concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 8

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 8 for Wheel Sensor e: excessive wheel slip indication. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 10

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 10 for Wheel Sensor e: sensor signal drop-out. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 11

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 11 for Wheel Sensor e: abnormal speed signal or chatter. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 12

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 12 for Wheel Sensor e: non-plausible wheel-speed frequency. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 5 FMI 13

Trailer ABS / RSSplus · Wheel Sensor e

Source-backed explanation of WABCO RSSplus SID 5 FMI 13 for Wheel Sensor e: sensor signal characteristic or configuration concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 1

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 1 for Wheel Sensor f: sensor signal too low. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 2

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 2 for Wheel Sensor f: sensor data erratic or incorrect. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 3

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 3 for Wheel Sensor f: sensor circuit shorted to supply voltage. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 4

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 4 for Wheel Sensor f: sensor circuit shorted to ground. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 5

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 5 for Wheel Sensor f: sensor open circuit or interrupted signal. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 6

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 6 for Wheel Sensor f: sensor circuit high current. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 7

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 7 for Wheel Sensor f: tone ring or wheel-end signal concern. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 8

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 8 for Wheel Sensor f: excessive wheel slip indication. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 10

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 10 for Wheel Sensor f: sensor signal drop-out. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 11

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 11 for Wheel Sensor f: abnormal speed signal or chatter. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 12

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 12 for Wheel Sensor f: non-plausible wheel-speed frequency. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 6 FMI 13

Trailer ABS / RSSplus · Wheel Sensor f

Source-backed explanation of WABCO RSSplus SID 6 FMI 13 for Wheel Sensor f: sensor signal characteristic or configuration concern. Covers diagnostic meaning, likely causes, and first checks.

medium high

WABCO RSSplus SID 156 FMI 2

Trailer ABS / RSSplus · J2497 power-line carrier data link

Source-backed explanation of WABCO RSSplus SID 156 FMI 2 for J2497 power-line carrier data link: PLC data link signal irregularity. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 220 FMI 9

Trailer ABS / RSSplus · Towing vehicle / trailer data link

Source-backed explanation of WABCO RSSplus SID 220 FMI 9 for Towing vehicle / trailer data link: trailer or towing-vehicle datalink communication error. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 251 FMI 2

Trailer ABS / RSSplus · Trailer ABS power supply

Source-backed explanation of WABCO RSSplus SID 251 FMI 2 for Trailer ABS power supply: power supply data erratic or intermittent. Covers diagnostic meaning, likely causes, and first checks.

high high

WABCO RSSplus SID 251 FMI 3

Trailer ABS / RSSplus · Trailer ABS power supply

Source-backed explanation of WABCO RSSplus SID 251 FMI 3 for Trailer ABS power supply: power supply voltage above normal. Covers diagnostic meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 168 FMI 2

Aware Vehicle Intelligence / Telematics · Power supply — battery voltage erratic

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 168 FMI 2: Power supply — battery voltage erratic. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 168 FMI 3

Aware Vehicle Intelligence / Telematics · Power supply — voltage above normal

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 168 FMI 3: Power supply — voltage above normal. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 168 FMI 4

Aware Vehicle Intelligence / Telematics · Power supply — voltage below normal

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 168 FMI 4: Power supply — voltage below normal. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 158 FMI 4

Aware Vehicle Intelligence / Telematics · Power supply — voltage below normal

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 158 FMI 4: Power supply — voltage below normal. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 444 FMI 2

Aware Vehicle Intelligence / Telematics · Battery backup voltage — erratic or intermittent

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 444 FMI 2: Battery backup voltage — erratic or intermittent. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 444 FMI 3

Aware Vehicle Intelligence / Telematics · Battery backup voltage — above normal

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 444 FMI 3: Battery backup voltage — above normal. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 444 FMI 4

Aware Vehicle Intelligence / Telematics · Battery backup voltage — below normal

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 444 FMI 4: Battery backup voltage — below normal. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 1079 FMI 0

Aware Vehicle Intelligence / Telematics · Vref sensor supply — above normal range

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 1079 FMI 0: Vref sensor supply — above normal range. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 1079 FMI 1

Aware Vehicle Intelligence / Telematics · Vref sensor supply — below normal range

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 1079 FMI 1: Vref sensor supply — below normal range. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 1079 FMI 3

Aware Vehicle Intelligence / Telematics · Vref sensor supply — shorted high (above 7 V)

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 1079 FMI 3: Vref sensor supply — shorted high (above 7 V). Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 1079 FMI 4

Aware Vehicle Intelligence / Telematics · Vref sensor supply — shorted low (below 0.5 V)

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 1079 FMI 4: Vref sensor supply — shorted low (below 0.5 V). Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 701 FMI 2

Aware Vehicle Intelligence / Telematics · Analog Input 1 — digital mode

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 701 FMI 2: Analog Input 1 — digital mode. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 701 FMI 3

Aware Vehicle Intelligence / Telematics · Analog Input 1 — short to supply

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 701 FMI 3: Analog Input 1 — short to supply. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 701 FMI 4

Aware Vehicle Intelligence / Telematics · Analog Input 1 — short to ground

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 701 FMI 4: Analog Input 1 — short to ground. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 701 FMI 13

Aware Vehicle Intelligence / Telematics · Analog Input 1 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 701 FMI 13: Analog Input 1 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 702 FMI 2

Aware Vehicle Intelligence / Telematics · Analog Input 2 — digital mode

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 702 FMI 2: Analog Input 2 — digital mode. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 702 FMI 3

Aware Vehicle Intelligence / Telematics · Analog Input 2 — short to supply

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 702 FMI 3: Analog Input 2 — short to supply. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 702 FMI 4

Aware Vehicle Intelligence / Telematics · Analog Input 2 — short to ground

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 702 FMI 4: Analog Input 2 — short to ground. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 702 FMI 13

Aware Vehicle Intelligence / Telematics · Analog Input 2 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 702 FMI 13: Analog Input 2 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 703 FMI 2

Aware Vehicle Intelligence / Telematics · Analog Input 3 — digital mode

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 703 FMI 2: Analog Input 3 — digital mode. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 703 FMI 3

Aware Vehicle Intelligence / Telematics · Analog Input 3 — short to supply

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 703 FMI 3: Analog Input 3 — short to supply. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 703 FMI 4

Aware Vehicle Intelligence / Telematics · Analog Input 3 — short to ground

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 703 FMI 4: Analog Input 3 — short to ground. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 703 FMI 13

Aware Vehicle Intelligence / Telematics · Analog Input 3 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 703 FMI 13: Analog Input 3 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 704 FMI 2

Aware Vehicle Intelligence / Telematics · Analog Input 4 — digital mode

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 704 FMI 2: Analog Input 4 — digital mode. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 704 FMI 3

Aware Vehicle Intelligence / Telematics · Analog Input 4 — short to supply

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 704 FMI 3: Analog Input 4 — short to supply. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 704 FMI 4

Aware Vehicle Intelligence / Telematics · Analog Input 4 — short to ground

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 704 FMI 4: Analog Input 4 — short to ground. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 704 FMI 13

Aware Vehicle Intelligence / Telematics · Analog Input 4 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 704 FMI 13: Analog Input 4 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 705 FMI 2

Aware Vehicle Intelligence / Telematics · Analog Input 5 — digital mode

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 705 FMI 2: Analog Input 5 — digital mode. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 705 FMI 3

Aware Vehicle Intelligence / Telematics · Analog Input 5 — short to supply

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 705 FMI 3: Analog Input 5 — short to supply. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 705 FMI 4

Aware Vehicle Intelligence / Telematics · Analog Input 5 — short to ground

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 705 FMI 4: Analog Input 5 — short to ground. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 705 FMI 13

Aware Vehicle Intelligence / Telematics · Analog Input 5 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 705 FMI 13: Analog Input 5 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 706 FMI 2

Aware Vehicle Intelligence / Telematics · Analog Input 6 — digital mode

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 706 FMI 2: Analog Input 6 — digital mode. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 706 FMI 3

Aware Vehicle Intelligence / Telematics · Analog Input 6 — short to supply

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 706 FMI 3: Analog Input 6 — short to supply. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 706 FMI 4

Aware Vehicle Intelligence / Telematics · Analog Input 6 — short to ground

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 706 FMI 4: Analog Input 6 — short to ground. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 706 FMI 13

Aware Vehicle Intelligence / Telematics · Analog Input 6 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 706 FMI 13: Analog Input 6 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 639 FMI 2

Aware Vehicle Intelligence / Telematics · J1939 CAN data link

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 639 FMI 2: J1939 CAN data link. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 608 FMI 2

Aware Vehicle Intelligence / Telematics · J1587/J1708 data link

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 608 FMI 2: J1587/J1708 data link. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 841 FMI 2

Aware Vehicle Intelligence / Telematics · GPS module — no satellite signal

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 841 FMI 2: GPS module — no satellite signal. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 841 FMI 12

Aware Vehicle Intelligence / Telematics · GPS module — device failure

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 841 FMI 12: GPS module — device failure. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 251 FMI 12

Aware Vehicle Intelligence / Telematics · RTC module — device communication failure

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 251 FMI 12: RTC module — device communication failure. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 251 FMI 13

Aware Vehicle Intelligence / Telematics · RTC module — out of calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 251 FMI 13: RTC module — out of calibration. Covers fault meaning, likely causes, and first checks.

low high

Navistar Aware SPN 2850 FMI 5

Aware Vehicle Intelligence / Telematics · Cellular antenna — open circuit

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 2850 FMI 5: Cellular antenna — open circuit. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 96 FMI 3

Aware Vehicle Intelligence / Telematics · Fuel level sender — voltage above normal (stuck high)

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 96 FMI 3: Fuel level sender — voltage above normal (stuck high). Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 96 FMI 4

Aware Vehicle Intelligence / Telematics · Fuel level sender — voltage below normal (stuck low)

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 96 FMI 4: Fuel level sender — voltage below normal (stuck low). Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 701 FMI 13

Aware Vehicle Intelligence / Telematics · Accessory Equipment Input 1 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 701 FMI 13: Accessory Equipment Input 1 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 702 FMI 13

Aware Vehicle Intelligence / Telematics · Accessory Equipment Input 2 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 702 FMI 13: Accessory Equipment Input 2 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 703 FMI 13

Aware Vehicle Intelligence / Telematics · Accessory Equipment Input 3 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 703 FMI 13: Accessory Equipment Input 3 — calibration. Covers fault meaning, likely causes, and first checks.

medium high

Navistar Aware SPN 704 FMI 13

Aware Vehicle Intelligence / Telematics · Accessory Equipment Input 4 — calibration

Source-backed explanation of Navistar Aware Vehicle Intelligence SPN 704 FMI 13: Accessory Equipment Input 4 — calibration. Covers fault meaning, likely causes, and first checks.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference explanation of SPN 3364 FMI 1 on Cummins ISX15 and X15 engines: DEF concentration measured below the acceptable threshold, inducement timer implications, and first checks.

high medium

SPN 5246 FMI 31

Aftertreatment �?SCR inducement · SCR operator inducement system

Reference explanation of SPN 5246 FMI 31 on Cummins ISX15 and X15 engines: SCR operator inducement condition exists, what it means for vehicle operation, and how shops address it.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF · DPF differential pressure sensor

Reference explanation of SPN 3251 FMI 0 on Cummins ISX15 and X15 engines: diesel particulate filter differential pressure in the high-severity above-normal range, regen implications, and ash loading context.

high medium

SPN 1569 FMI 31

Engine protection system · ECM torque derate output

Reference explanation of SPN 1569 FMI 31 on Cummins ISX15 and X15 engines: engine protection mode is active, torque has been reduced to protect the engine from a monitored parameter that has exceeded a threshold.

medium medium

SPN 4364 FMI 18

Aftertreatment �?SCR · SCR catalyst / NOx sensor pair

Reference explanation of SPN 4364 FMI 18 on Detroit DD15 and DD13 engines: SCR catalyst NOx conversion efficiency has dropped below the acceptable minimum at the moderate severity level.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference explanation of SPN 3364 FMI 1 on Detroit DD13 and DD15 engines: DEF quality sensor has detected urea concentration below the acceptable range, triggering the aftertreatment inducement sequence.

medium medium

SPN 3719 FMI 31

Aftertreatment �?DPF · DPF soot load model / regeneration system

Reference explanation of SPN 3719 FMI 31 on Detroit DD15 and DD13 engines: DPF soot load percentage has exceeded the threshold where a parked or active regeneration is required.

medium medium

SPN 3226 FMI 16

Aftertreatment �?SCR · NOx sensor (SCR outlet / downstream)

Reference explanation of SPN 3226 FMI 16 on Detroit DD15 and DD13 engines: the downstream (outlet) NOx sensor is reading above normal at the moderate severity level, indicating the SCR catalyst is not reducing NOx output adequately.

medium medium

SPN 191 FMI 8

Transmission �?output shaft · Output shaft speed sensor (TSS)

Reference explanation of SPN 191 FMI 8 on Eaton AutoShift, UltraShift PLUS, and Endurant HD automated transmissions: the output shaft speed sensor signal has an abnormal frequency or pulse pattern, affecting shift control decisions.

medium medium

SPN 127 FMI 1

Transmission �?hydraulic system · Transmission hydraulic pressure sensor

Reference explanation of SPN 127 FMI 1 on Eaton AutoShift, UltraShift PLUS, and Endurant HD automated transmissions: hydraulic line pressure is below the normal operational range, with implications for gear actuation and shift quality.

high medium

SPN 127 FMI 1

Transmission �?hydraulic system · Transmission main pressure sensor

Reference explanation of SPN 127 FMI 1 on Allison 3000 and 4000 series automatic transmissions: main (line) oil pressure has dropped below the normal operational range, with possible range-limiting behavior from the TCM.

high medium

SPN 177 FMI 0

Transmission �?thermal management · Transmission fluid temperature sensor

Reference explanation of SPN 177 FMI 0 on Allison 3000 and 4000 series transmissions: fluid temperature has risen above the normal operational range, with associated protective behavior from the TCM.

medium medium

SPN 102 FMI 4

Air handling �?turbocharger / boost pressure · Intake manifold pressure sensor / turbocharger system

Reference explanation of SPN 102 FMI 4 on Cummins ISX15 and X15 engines: intake manifold pressure signal below the expected electrical range, boost leak and turbocharger diagnostic context.

medium medium

SPN 157 FMI 18

Fuel system �?high-pressure rail · Fuel rail pressure sensor / high-pressure fuel system

Reference explanation of SPN 157 FMI 18 on Cummins ISX15 and X15 engines: injector metering rail pressure reading moderately below the expected operating range, and how to distinguish pump, injector, and supply-side root causes.

high medium

SPN 110 FMI 0

Cooling system �?engine protection · Engine coolant temperature sensor / cooling system

Reference explanation of SPN 110 FMI 0 on Cummins ISX15 and X15 engines: coolant temperature above the high-severity threshold, engine protection activation, and what to check before restarting.

medium medium

SPN 4364 FMI 18

Aftertreatment �?SCR / NOx · SCR catalyst / NOx sensor system

Reference explanation of SPN 4364 FMI 18 on Cummins ISX15 and X15 engines: SCR system NOx conversion efficiency below the acceptable threshold, inducement implications, and how to distinguish DEF quality, dosing, sensor, and catalyst causes.

medium medium

SPN 102 FMI 4

Air handling �?turbocharger / boost pressure · Intake manifold pressure sensor / turbocharger system

Reference explanation of SPN 102 FMI 4 on Detroit DD13 and DD15 engines: intake manifold pressure signal below the expected range, boost system diagnostic context, and DiagnosticLink live data guidance.

medium medium

SPN 157 FMI 18

Fuel system �?high-pressure rail · Fuel rail pressure sensor / high-pressure fuel system

Reference explanation of SPN 157 FMI 18 on Detroit DD13 and DD15 engines: injector metering rail pressure reading moderately below the expected range on the DD common-rail fuel system.

high medium

SPN 110 FMI 0

Cooling system �?engine protection · Engine coolant temperature sensor / cooling system

Reference explanation of SPN 110 FMI 0 on Detroit DD13 and DD15 engines: coolant temperature above the high-severity threshold, engine protection response, and cooling system first checks.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on Cummins ISX15 and X15 heavy-duty diesel engines: DEF urea concentration below the acceptable range, inducement timer implications, diagnosis steps, and repair guidance.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on Cummins ISX15 and X15 engines: selective catalytic reduction system conversion efficiency below the required threshold, inducement implications, and diagnostic approach.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on Cummins ISX15 and X15 engines: diesel particulate filter estimated soot load above the high threshold, regeneration cycle implications, and diagnosis steps.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on Cummins ISX15 and X15 engines: the engine protection system has activated a torque derate; this code is a secondary indicator �?companion codes identify the triggering condition.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail fuel system

Reference guide for SPN 157 FMI 18 on Cummins ISX15 and X15 engines: injector metering rail pressure below the normal range under current load and speed conditions, common causes, and diagnostic approach.

medium medium

SPN 641 FMI 7

Engine �?turbocharger · Variable geometry turbocharger (VGT) actuator

Reference guide for SPN 641 FMI 7 on Cummins ISX15 and X15 engines: variable geometry turbocharger actuator is not moving the turbine geometry as commanded, common causes, and diagnostic approach.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the Cummins ISB 6.7 diesel engine: DEF urea concentration below acceptable range, inducement sequence, and diagnostic first steps for medium-duty truck and bus applications.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the Cummins ISB 6.7 engine: DPF soot load above the high threshold, regeneration cycle issues, and diagnostic first steps for medium-duty truck and bus applications.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on the Cummins ISB 6.7: engine protection system has activated a torque derate; review companion codes to identify the triggering condition.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the Cummins X12 diesel engine: SCR system conversion efficiency below the required threshold, inducement implications, and diagnostic approach for vocational and regional-haul applications.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the Detroit DD13 diesel engine: DEF urea concentration below acceptable range, inducement sequence, and diagnostic steps using Detroit DiagnosticLink.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the Detroit DD13 engine: diesel particulate filter estimated soot load above the high threshold, regeneration implications, and diagnosis using DiagnosticLink.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the Detroit DD13 engine: SCR catalyst conversion efficiency below the required threshold, inducement implications, and diagnostic approach using DiagnosticLink.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on the Detroit DD13 engine: engine protection system has activated a torque derate; review companion codes to identify the triggering condition.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail system

Reference guide for SPN 157 FMI 18 on the Detroit DD13 engine: injector metering rail pressure below the expected range, common causes including pump wear and injector leakback, and diagnostic approach using DiagnosticLink.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the Detroit DD15 diesel engine: DEF urea concentration below acceptable range, inducement sequence, and diagnostic steps using Detroit DiagnosticLink.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the Detroit DD15 engine: SCR catalyst conversion efficiency below the required threshold, inducement implications, and diagnostic approach using DiagnosticLink.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail system

Reference guide for SPN 157 FMI 18 on the Detroit DD15 engine: injector metering rail pressure below the expected range for current operating conditions, diagnosis approach, and repair guidance using DiagnosticLink.

medium medium

SPN 1231 FMI 9

Transmission �?communication · J1939 CAN network / transmission control module

Reference guide for SPN 1231 FMI 9 on the Detroit DT12 automated manual transmission: J1939 data link communication failure between the transmission control module and another ECU on the vehicle network.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the PACCAR MX-13 diesel engine used in Kenworth and Peterbilt trucks: DEF concentration below acceptable range, inducement sequence, and diagnostic steps.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the PACCAR MX-13 engine: DPF estimated soot load above the high threshold, regeneration cycle implications, and diagnostic first steps for Kenworth and Peterbilt trucks.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the PACCAR MX-13 engine in Kenworth and Peterbilt trucks: SCR catalyst conversion efficiency below threshold, inducement sequence, and diagnostic approach.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control unit �?protection strategy

Reference guide for SPN 1569 FMI 31 on the PACCAR MX-13 engine: engine protection system has activated a torque derate; companion codes identify the triggering condition.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the Volvo D13 diesel engine: DEF urea concentration below acceptable range, inducement sequence, and diagnostic steps using Volvo VCADS or TEXA.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the Volvo D13 engine: SCR catalyst conversion efficiency below the required threshold, inducement implications, and diagnostic approach using Volvo VCADS.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the Volvo D13 engine: DPF estimated soot load above the high threshold, regeneration implications, and diagnosis using Volvo VCADS.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on the Volvo D13 engine: engine protection system has activated a torque derate; companion codes identify the triggering condition.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the Mack MP8 diesel engine: DEF urea concentration below acceptable range, inducement sequence, and diagnostic steps using Mack diagnostic tools.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the Mack MP8 engine: SCR catalyst conversion efficiency below the required threshold, inducement sequence, and diagnostic approach for Mack Class 8 trucks.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on the Mack MP8 engine: engine protection system has activated a torque derate; companion codes identify the triggering condition.

medium medium

SPN 1231 FMI 9

Transmission �?communication · J1939 CAN network / Allison transmission control module

Reference guide for SPN 1231 FMI 9 on Allison 3000 and 4000 Series automatic transmissions: J1939 data link communication failure between the Allison TCM and another vehicle ECU.

medium medium

SPN 177 FMI 16

Transmission �?thermal management · Transmission fluid / cooler / temperature sensor

Reference guide for SPN 177 FMI 16 on Allison 3000 and 4000 Series transmissions: transmission fluid temperature above the high warning threshold, common causes, and diagnostic steps.

medium medium

SPN 191 FMI 8

Transmission �?speed sensing · Output shaft speed sensor

Reference guide for SPN 191 FMI 8 on Allison 3000 and 4000 Series transmissions: output shaft speed sensor producing an erratic or abnormal signal pattern, impact on shift control, and diagnostic steps.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the International A26 diesel engine used in International LT and RH Series trucks: DEF concentration below acceptable range, inducement sequence, and diagnostic steps.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the International A26 engine: SCR catalyst conversion efficiency below the required threshold, inducement sequence, and diagnostic approach.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the International A26 engine: DPF soot load above the high threshold, regeneration implications, and diagnostic steps.

medium medium

SPN 1231 FMI 9

Transmission �?communication · J1939 CAN network / Eaton transmission control module

Reference guide for SPN 1231 FMI 9 on Eaton UltraShift and Fuller Advantage automated manual transmissions: J1939 data link communication failure between the Eaton TCM and another vehicle ECU.

medium medium

SPN 177 FMI 16

Transmission �?thermal management · Transmission fluid / cooler / temperature sensor

Reference guide for SPN 177 FMI 16 on Eaton UltraShift and Fuller Advantage automated transmissions: transmission fluid temperature above the high warning threshold, common causes, and diagnostic steps.

medium medium

SPN 1231 FMI 9

Transmission �?communication · J1939 CAN network / ZF transmission control unit

Reference guide for SPN 1231 FMI 9 on ZF AS-Tronic and TraXon automated manual transmissions: J1939 data link communication failure between the ZF TCU and another vehicle ECU.

medium medium

SPN 177 FMI 16

Transmission �?thermal management · Transmission fluid / cooler / temperature sensor

Reference guide for SPN 177 FMI 16 on ZF AS-Tronic and TraXon transmissions: transmission fluid temperature above the high warning threshold, common causes, and diagnostic steps.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the Ford 6.7L Power Stroke diesel engine in F-Series Super Duty and commercial trucks: DEF urea concentration below acceptable range, inducement sequence, and diagnostic steps.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the Ford 6.7L Power Stroke diesel engine: DPF soot load above the high threshold, regeneration implications, and diagnostic steps for F-Series Super Duty and commercial vehicles.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the Ford 6.7L Power Stroke diesel engine: SCR catalyst conversion efficiency below the required threshold, inducement sequence, and diagnostic approach.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on the Detroit DD15 engine: engine protection system has activated a torque derate; companion codes identify the triggering condition.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the Detroit DD15 engine: DPF estimated soot load above the high threshold, regeneration implications, and diagnosis using DiagnosticLink.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on Isuzu 4HK1 and 6HK1 diesel engines in NPR, NQR, and NRR medium-duty trucks: DEF concentration below acceptable range, inducement sequence, and diagnostic steps.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on Isuzu 4HK1 and 6HK1 diesel engines: DPF soot load above the high threshold, regeneration cycle implications, and diagnostic steps for medium-duty truck applications.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on Isuzu 4HK1 and 6HK1 diesel engines: SCR catalyst conversion efficiency below the required threshold, inducement implications, and diagnostic approach for Isuzu medium-duty trucks.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF system · DEF quality / concentration sensor

Reference guide for SPN 3364 FMI 1 on the GM Duramax L5P 6.6L diesel engine in Chevrolet Silverado HD and GMC Sierra HD trucks: DEF quality below acceptable range, inducement sequence, and diagnostic steps.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF system · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the GM Duramax L5P engine: DPF estimated soot load above the high threshold, regeneration implications, and diagnostic steps for Chevrolet and GMC heavy-duty trucks.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / NOx sensors

Reference guide for SPN 5246 FMI 31 on the GM Duramax L5P engine: SCR catalyst conversion efficiency below the required threshold, inducement sequence, and diagnostic approach for heavy-duty GM pickup trucks.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail system

Reference guide for SPN 157 FMI 18 on the Volvo D13 diesel engine: injector metering rail pressure below the expected range for current operating conditions, diagnosis approach, and repair guidance using Volvo VCADS.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail system

Reference guide for SPN 157 FMI 18 on the Mack MP8 diesel engine: injector metering rail pressure below the expected range for current operating conditions, diagnosis approach, and repair guidance.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail system

Reference guide for SPN 157 FMI 18 on the PACCAR MX-13 engine in Kenworth and Peterbilt trucks: fuel rail pressure below the expected range for current operating conditions, diagnosis approach, and repair guidance.

medium medium

SPN 27 FMI 9

Engine �?EGR system · EGR valve / position sensor

Reference guide for SPN 27 FMI 9 on Cummins ISX15 and X15 engines: the EGR valve position sensor is not updating at the expected rate, impact on EGR control, and diagnostic steps using Cummins Insite.

low medium

SPN 3563 FMI 15

Aftertreatment �?DEF system · DEF tank level sensor

Reference guide for SPN 3563 FMI 15 on Cummins ISX15 and X15 engines: DEF tank level has fallen to or below the low-level warning threshold, operator action required before inducement activates.

medium medium

SPN 4334 FMI 18

Aftertreatment �?SCR system · Downstream NOx sensor

Reference guide for SPN 4334 FMI 18 on Cummins ISX15 and X15 engines: the downstream NOx sensor after the SCR catalyst is reading below the normal operating range, impact on SCR efficiency monitoring, and diagnostic steps.

medium medium

SPN 3226 FMI 16

Aftertreatment �?SCR system · Upstream NOx sensor

Reference guide for SPN 3226 FMI 16 on the Detroit DD13 engine: the upstream NOx sensor before the SCR catalyst is reading above the normal range, impact on aftertreatment monitoring, and diagnostic steps.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · Engine control module �?protection strategy

Reference guide for SPN 1569 FMI 31 on the International A26 engine: engine protection system has activated a torque derate; companion codes identify the triggering condition.

medium medium

SPN 1231 FMI 9

Transmission �?communication · J1939 CAN network / Volvo I-Shift transmission control module

Reference guide for SPN 1231 FMI 9 on the Volvo I-Shift automated manual transmission: J1939 data link communication failure between the Volvo I-Shift TCM and another ECU on the vehicle CAN network.

medium medium

SPN 3251 FMI 0

Aftertreatment �?DPF · Diesel particulate filter / differential pressure sensor

Reference guide for SPN 3251 FMI 0 on the Mack MP8 engine: diesel particulate filter differential pressure is above the high-soot-load threshold, indicating a regen is needed, and diagnostic steps.

medium medium

SPN 1231 FMI 9

Transmission �?communication · J1939 CAN network / Mack mDrive transmission control module

Reference guide for SPN 1231 FMI 9 on the Mack mDrive automated manual transmission: J1939 communication failure between the mDrive TCM and another ECU, impact on automated shifting, and diagnostic steps.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure fuel rail / common rail system

Reference guide for SPN 157 FMI 18 on the Cummins ISB 6.7 engine in medium-duty trucks and vans: fuel rail pressure below expected range, diagnosis, and repair guidance.

medium medium

SPN 3226 FMI 16

Aftertreatment �?SCR system · Upstream NOx sensor

Reference guide for SPN 3226 FMI 16 on the Detroit DD15 engine: upstream NOx sensor before the SCR catalyst is reading above the normal range, with diagnostic steps to distinguish actual high NOx from a sensor fault.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF / SCR system · DEF quality sensor / SCR system

Reference guide for SPN 3364 FMI 1 on the PACCAR MX-11 engine in Kenworth and Peterbilt trucks: DEF quality detected below minimum standards, SCR system impact, and how to restore compliance.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / DEF dosing system

Reference guide for SPN 5246 FMI 31 on the PACCAR MX-11 engine: SCR catalyst conversion efficiency below compliance threshold or system not ready, inducement implications, and diagnostic steps using PACCAR DAVIE.

medium medium

SPN 27 FMI 9

Engine �?EGR system · EGR valve / position sensor

Reference guide for SPN 27 FMI 9 on the Volvo D13 engine: EGR valve position sensor not communicating at the expected rate, impact on EGR control, and Volvo VCADS Pro diagnostic steps.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · PCM engine protection strategy

Reference guide for SPN 1569 FMI 31 on the Ford 6.7 Power Stroke diesel in F-250 through F-450 trucks: engine protection torque derate is active; companion codes identify the triggering condition.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · ECM engine protection strategy

Reference guide for SPN 1569 FMI 31 on the GM Duramax L5P in Silverado and Sierra HD trucks: engine protection system has activated a torque or speed derate; companion codes identify the triggering condition.

medium medium

SPN 3509 FMI 3

Transmission �?electrical · TCM power supply / battery / charging system

Reference guide for SPN 3509 FMI 3 on Allison 3000 and 4000 series transmissions: the power supply voltage to the transmission control module is above normal, potential causes, and impact on transmission operation.

high medium

SPN 1569 FMI 31

Engine protection / aftertreatment · ECM engine protection strategy

Reference guide for SPN 1569 FMI 31 on Isuzu 4HK1 and 6HK1 diesel engines in NPR, NQR, and medium-duty trucks: engine protection torque derate is active; companion codes identify the triggering condition.

medium medium

SPN 157 FMI 18

Engine �?fuel system · High-pressure common rail fuel system

Reference guide for SPN 157 FMI 18 on Isuzu 4HK1 and 6HK1 diesel engines: fuel rail pressure below expected range, common causes, and repair guidance for medium-duty Isuzu trucks.

medium medium

SPN 191 FMI 8

Transmission �?speed sensing · Output shaft speed sensor

Reference guide for SPN 191 FMI 8 on the Eaton UltraShift automated manual transmission: output shaft speed sensor is producing an erratic or abnormal frequency signal, shift control impact, and diagnostic steps.

medium medium

SPN 191 FMI 8

Transmission �?speed sensing · Output shaft speed sensor

Reference guide for SPN 191 FMI 8 on ZF AS-Tronic and ZF TraXon automated manual transmissions: output shaft speed sensor producing an erratic signal, impact on shift control, and diagnostic steps using ZF Testman or WABCO Toolbox.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF / SCR system · DEF quality sensor / SCR system

Reference guide for SPN 3364 FMI 1 on the Cummins X12 engine: DEF quality sensor has detected urea concentration below the minimum required for effective SCR operation, operator action required.

medium medium

SPN 3364 FMI 1

Aftertreatment �?DEF / SCR system · DEF quality sensor / SCR system

Reference guide for SPN 3364 FMI 1 on the Volvo D16 heavy-duty diesel engine: DEF quality sensor has detected urea concentration below the acceptable minimum, SCR system impact, and corrective steps.

medium medium

SPN 5246 FMI 31

Aftertreatment �?SCR system · SCR catalyst / DEF dosing system

Reference guide for SPN 5246 FMI 31 on the Volvo D16 heavy-duty engine: SCR catalyst conversion efficiency below the regulatory threshold, inducement implications, and diagnostic steps using VCADS Pro.

medium medium

SPN 641 FMI 7

Engine �?turbocharger · Variable geometry turbocharger (VGT) / actuator

Reference guide for SPN 641 FMI 7 on the Detroit DD13 engine: variable geometry turbocharger actuator is not responding correctly to commanded positions, turbocharger boost impact, and diagnostic steps using DiagnosticLink.

medium medium

SPN 161 FMI 8

Transmission �?speed sensing · Turbine speed sensor

Reference guide for SPN 161 FMI 8 on Allison 3000 and 4000 series transmissions: turbine speed sensor producing an erratic or abnormal frequency signal, impact on shift control, and diagnostic steps.

medium medium

SPN 641 FMI 7

Engine �?turbocharger · Variable geometry turbocharger (VGT) / actuator

Reference guide for SPN 641 FMI 7 on the Detroit DD15 engine in Freightliner Cascadia and Western Star trucks: VGT actuator not responding correctly to commanded position, impact on boost and DPF regen, and DiagnosticLink diagnostic steps.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on Cummins ISX15 and X15 engines: engine oil pressure is below the minimum normal threshold for current operating conditions, immediate action required to prevent engine damage.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on Cummins ISX15 and X15 engines: engine coolant temperature is above the high-temperature warning threshold; immediate action to prevent overheating damage.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the Detroit DD15 engine in Freightliner and Western Star trucks: coolant temperature above the warning threshold; immediate cooling system inspection required.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the PACCAR MX-13 engine in Kenworth and Peterbilt trucks: coolant temperature above normal warning range; cooling system inspection required to prevent overheating damage.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the Volvo D13 engine: oil pressure is below the minimum normal operating range; immediate action required to prevent severe engine damage.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the Mack MP8 engine: coolant temperature has exceeded the high-temperature warning threshold; cooling system inspection required.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the International A26 engine in LT and RH Series trucks: coolant temperature above the warning threshold; cooling system inspection to prevent engine damage.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the Cummins ISB 6.7 engine in medium-duty trucks and vans: coolant temperature above the warning threshold; cooling system diagnosis to prevent engine damage.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the Detroit DD13 engine: oil pressure below the minimum normal threshold; stop the engine and inspect the lubrication system immediately.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the Volvo D13 engine: coolant temperature exceeds the high-temperature warning threshold; immediate cooling system inspection required.

medium medium

SPN 177 FMI 0

Transmission �?cooling · Transmission fluid temperature sensor / cooler

Reference guide for SPN 177 FMI 0 on Allison 3000 and 4000 series transmissions: transmission fluid temperature above the high-temperature warning threshold; cooling system inspection to prevent transmission damage.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the Detroit DD15 engine in Freightliner Cascadia and Western Star trucks: oil pressure below the minimum normal threshold; stop the engine and inspect the lubrication system immediately.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on Cummins ISX15 and X15 engines: intake manifold pressure (boost) is below the normal range for current operating conditions, indicating a turbocharger or charge air cooler fault.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the Detroit DD15 engine: intake manifold boost pressure below the normal range for current operating conditions, impact on performance, and DiagnosticLink diagnostic steps.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the PACCAR MX-13 engine in Kenworth and Peterbilt trucks: engine oil pressure below the minimum normal threshold; stop the engine and inspect the lubrication system immediately.

medium medium

SPN 105 FMI 0

Engine �?charge air cooling · Charge air cooler (CAC) / intercooler / intake manifold temperature sensor

Reference guide for SPN 105 FMI 0 on Cummins ISX15 and X15 engines: intake manifold air temperature is above the normal high-temperature warning threshold, indicating a charge air cooling system issue.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the Detroit DD13 engine: intake manifold boost pressure below the normal range for current conditions, impact on performance, and diagnostic steps using DiagnosticLink.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the Detroit DD13 engine in Freightliner trucks and vocational applications: coolant temperature above the warning threshold; cooling system inspection to prevent engine damage.

medium medium

SPN 101 FMI 0

Engine �?crankcase ventilation · Crankcase ventilation (CCV) system / piston rings / cylinder liners

Reference guide for SPN 101 FMI 0 on Cummins ISX15 and X15 engines: crankcase pressure is above the normal operating range, indicating excessive engine blowby, a failed crankcase ventilation system, or internal wear.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the Volvo D13 engine: intake manifold boost pressure below the normal operating range, impact on performance, and Volvo VCADS Pro diagnostic steps.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the Mack MP8 engine: intake manifold boost pressure below the expected range, impact on performance and DPF regen, and VCADS Pro diagnostic steps.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the Ford 6.7 Power Stroke diesel in F-250 through F-450 trucks: coolant temperature above the high-temperature warning threshold, immediate cooling system inspection required.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the GM Duramax L5P in Silverado and Sierra HD trucks: oil pressure below the minimum normal threshold; stop the engine and inspect the lubrication system immediately.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the Cummins ISB 6.7 engine in medium-duty trucks and pickups: oil pressure below the minimum normal threshold; stop the engine and check the lubrication system immediately.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the International A26 engine: oil pressure below the minimum normal threshold; stop the engine immediately and inspect the lubrication system.

medium medium

SPN 1220 FMI 9

Transmission �?clutch actuation · Clutch actuator / CAN communication

Reference guide for SPN 1220 FMI 9 on the Eaton UltraShift automated manual transmission: the clutch actuator module is not receiving expected communication from the transmission control module, impact on clutch operation, and diagnostic steps.

high medium

SPN 731 FMI 2

Transmission �?gear selection · Clutch pack / planetary gear set

Reference guide for SPN 731 FMI 2 on Allison 3000 and 4000 series transmissions: the actual gear ratio does not match the commanded gear, indicating clutch pack slippage or an internal mechanical fault.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the Mack MP8 engine: oil pressure below the minimum normal threshold; stop the engine and check the lubrication system immediately.

stop safely medium

SPN 110 FMI 0

Engine �?cooling system · Engine coolant temperature sensor / cooling system

Reference guide for SPN 110 FMI 0 on the GM Duramax L5P in Silverado and Sierra HD trucks: coolant temperature above the warning threshold; immediate cooling system action required to prevent engine damage.

medium medium

SPN 3480 FMI 5

Aftertreatment �?DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on Cummins ISX15 and X15 engines: the DEF dosing injector control circuit has an open circuit fault, preventing DEF delivery to the SCR catalyst.

stop safely medium

SPN 100 FMI 1

Engine �?lubrication · Engine oil pressure / oil pump

Reference guide for SPN 100 FMI 1 on the Ford 6.7 Power Stroke diesel: oil pressure below the minimum normal threshold; stop the engine immediately and inspect the lubrication system.

medium medium

SPN 3480 FMI 5

Aftertreatment �?DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the Detroit DD15 engine: the DEF dosing injector control circuit has an open fault, preventing DEF delivery to the SCR catalyst and triggering an SCR efficiency fault.

medium medium

SPN 3480 FMI 5

Aftertreatment �?DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the PACCAR MX-13 engine: DEF dosing injector circuit has an open fault; DEF delivery to the SCR catalyst is interrupted, triggering an SCR efficiency fault.

medium medium

SPN 3480 FMI 5

Aftertreatment �?DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the Volvo D13 engine: DEF dosing injector circuit has an open fault; DEF delivery is stopped and SCR efficiency will drop.

medium medium

SPN 3480 FMI 5

Aftertreatment �?DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the Mack MP8 engine: DEF dosing injector circuit open fault stops DEF delivery; SCR efficiency and inducement faults will follow.

medium medium

SPN 161 FMI 3

Transmission �?speed sensing · Turbine speed sensor / wiring

Reference guide for SPN 161 FMI 3 on Allison 3000 and 4000 series transmissions: the turbine speed sensor circuit voltage is above normal, indicating a wiring or sensor fault.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the Cummins ISB 6.7 engine: intake manifold boost pressure below the expected range, indicating a turbocharger or charge air system fault.

medium medium

SPN 412 FMI 0

Engine �?EGR system · EGR cooler / EGR temperature sensor

Reference guide for SPN 412 FMI 0 on Cummins ISX15 and X15 engines: EGR temperature is above the normal operating range, indicating a potential EGR cooler failure, restricted coolant flow, or sensor fault.

medium medium

SPN 412 FMI 0

Engine �?EGR system · EGR cooler / EGR temperature sensor

Reference guide for SPN 412 FMI 0 on the Detroit DD15 engine: EGR temperature after the cooler is above the normal operating range, indicating EGR cooler performance degradation.

medium medium

SPN 524 FMI 7

Transmission �?range shift · Range cylinder / range shift actuator

Reference guide for SPN 524 FMI 7 on the Eaton UltraShift automated manual transmission: the range cylinder or range shift actuator is not responding correctly to commanded range changes, preventing access to the high or low range.

medium medium

SPN 412 FMI 0

Engine �?EGR system · EGR cooler / EGR temperature sensor

Reference guide for SPN 412 FMI 0 on the Volvo D13 engine: EGR outlet temperature after the cooler is above the normal range, indicating EGR cooler performance degradation.

medium medium

SPN 731 FMI 2

Transmission �?gear selection · Synchronizer / shift actuator / gear set

Reference guide for SPN 731 FMI 2 on ZF AS-Tronic and TraXon automated manual transmissions: the actual gear ratio calculated from input and output speed sensors does not match the commanded gear, indicating a synchronizer, clutch, or shift actuator fault.

medium medium

SPN 412 FMI 0

Engine �?EGR system · EGR cooler / EGR temperature sensor

Reference guide for SPN 412 FMI 0 on the PACCAR MX-13 engine: EGR outlet temperature after the cooler is above the normal operating range, indicating EGR cooler degradation or a bypass valve fault.

medium medium

SPN 412 FMI 0

Engine �?EGR system · EGR cooler / EGR bypass valve / temperature sensor

Reference guide for SPN 412 FMI 0 on the Detroit DD13 engine: EGR outlet temperature after the cooler is above the normal range, indicating bypass valve fault or EGR cooler degradation.

medium medium

SPN 412 FMI 0

Engine �?EGR system · EGR cooler / EGR bypass valve / temperature sensor

Reference guide for SPN 412 FMI 0 on the Mack MP8 engine: EGR outlet temperature after the cooler is above the normal operating range, indicating EGR cooler performance degradation.

medium medium

SPN 3361 FMI 1

Aftertreatment �?DEF supply system · DEF supply pump / DEF lines / filter

Reference guide for SPN 3361 FMI 1 on Cummins ISX15 and X15 engines: the DEF supply pump is not maintaining adequate pressure for DEF delivery to the dosing injector.

high medium

SPN 1569 FMI 31

Engine �?engine protection / derate control · Engine control module / derate arbitration

Reference guide for SPN 1569 FMI 31 on the PACCAR MX-11 engine: the engine control module has commanded a power derate due to an active fault condition or emissions protection event.

medium medium

SPN 102 FMI 1

Engine �?turbocharger / air handling · Turbocharger / VGT actuator / CAC / boost sensor

Reference guide for SPN 102 FMI 1 on the International A26 engine: intake manifold pressure (boost) is below the expected level for the current engine operating conditions.

medium medium

SPN 3361 FMI 1

Aftertreatment �?DEF supply system · DEF supply pump / DEF lines / filter / DEF tank module

Reference guide for SPN 3361 FMI 1 on the Detroit DD15 engine: the DEF supply pump module is not building or maintaining adequate pressure for DEF dosing.

medium medium

SPN 3361 FMI 1

Aftertreatment �?DEF supply system · DEF supply pump / DEF tank module / filter / lines

Reference guide for SPN 3361 FMI 1 on the Volvo D13 engine: the DEF supply pump is not generating or maintaining sufficient pressure to deliver DEF to the SCR dosing injector.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel delivery pump / fuel filter / fuel supply lines

Reference guide for SPN 94 FMI 1 on Cummins ISX15 and X15 engines: fuel delivery pressure to the high-pressure XPI fuel pump is below the expected operating range.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / fuel supply circuit

Reference guide for SPN 94 FMI 1 on the Detroit DD15 engine: low-pressure fuel supply to the high-pressure pump is below the expected operating range.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / supply lines

Reference guide for SPN 94 FMI 1 on the PACCAR MX-13 engine: fuel supply pressure to the high-pressure injection system is below the normal operating range.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / fuel supply circuit

Reference guide for SPN 94 FMI 1 on the Volvo D13 engine: fuel supply pressure feeding the high-pressure injection pump is below the normal operating range.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / supply circuit

Reference guide for SPN 94 FMI 1 on the Mack MP8 engine: fuel supply pressure to the high-pressure injection pump is below the normal operating range.

medium medium

SPN 190 FMI 0

Engine �?speed / overspeed protection · Engine control module / fuel system / overspeed protection

Reference guide for SPN 190 FMI 0 on Cummins ISX15 and X15 engines: the engine speed exceeded the overspeed protection threshold during operation.

medium medium

SPN 190 FMI 0

Engine �?speed / overspeed protection · Engine control module / overspeed protection system

Reference guide for SPN 190 FMI 0 on the Detroit DD15 engine: engine speed exceeded the overspeed protection threshold and the event was recorded in the ECM.

medium medium

SPN 3246 FMI 0

Aftertreatment �?DPF · DPF / DPF outlet temperature sensor / regeneration system

Reference guide for SPN 3246 FMI 0 on Cummins ISX15 and X15 engines: the temperature at the DPF outlet is above the normal operating range, indicating an overheat condition during or after regeneration.

medium medium

SPN 3246 FMI 0

Aftertreatment �?DPF · DPF / outlet temperature sensor / regen system

Reference guide for SPN 3246 FMI 0 on the Detroit DD15 engine: DPF outlet temperature exceeded the normal operating range, typically during an active or passive regeneration event.

high medium

SPN 175 FMI 0

Engine �?lubrication / cooling · Engine oil cooler / coolant system / oil temperature sensor

Reference guide for SPN 175 FMI 0 on Cummins ISX15 and X15 engines: engine oil temperature exceeded the normal operating range, triggering the oil temperature protection.

high medium

SPN 175 FMI 0

Engine �?lubrication / cooling · Engine oil cooler / cooling system / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the Detroit DD15 engine: engine oil temperature has exceeded the normal operating range.

high medium

SPN 175 FMI 0

Engine �?lubrication / cooling · Oil cooler / coolant system / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the PACCAR MX-13 engine: engine oil temperature has exceeded the normal operating range.

medium medium

SPN 3246 FMI 0

Aftertreatment �?DPF · DPF / DPF outlet temperature sensor / regen system

Reference guide for SPN 3246 FMI 0 on the PACCAR MX-13 engine: DPF outlet temperature has exceeded the normal operating range, typically during an active regeneration event.

medium medium

SPN 3246 FMI 0

Aftertreatment �?DPF · DPF / outlet temperature sensor / regen system

Reference guide for SPN 3246 FMI 0 on the Volvo D13 engine: DPF outlet temperature has exceeded the normal range, indicating an overheat condition during or after a DPF regeneration cycle.

medium medium

SPN 190 FMI 0

Engine �?speed / overspeed protection · Engine control module / overspeed protection system

Reference guide for SPN 190 FMI 0 on the PACCAR MX-13 engine: engine speed exceeded the overspeed protection threshold.

medium medium

SPN 190 FMI 0

Engine �?speed / overspeed protection · Engine control module / overspeed protection

Reference guide for SPN 190 FMI 0 on the Volvo D13 engine: the engine speed exceeded the overspeed protection threshold and the event was recorded.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / aftertreatment system / regeneration system

Reference guide for SPN 3055 FMI 14 on Cummins ISX15 and X15 engines: the DPF soot load has reached the level where a parked (stationary) active regeneration is required to restore normal operation.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / aftertreatment system / regeneration system

Reference guide for SPN 3055 FMI 14 on the Detroit DD15 engine: DPF soot load has reached a level where a parked (stationary) active regeneration is required.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / regeneration system / aftertreatment control

Reference guide for SPN 3055 FMI 14 on the Volvo D13 engine: DPF soot load requires a stationary parked regeneration to restore normal operation.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / regeneration system / aftertreatment control

Reference guide for SPN 3055 FMI 14 on the Mack MP8 engine: DPF soot load has reached the level requiring a stationary parked regeneration.

high medium

SPN 5246 FMI 31

Aftertreatment �?SCR · SCR catalyst / NOx sensors / DEF system

Reference guide for SPN 5246 FMI 31 on the Cummins ISB 6.7 engine: SCR catalyst conversion efficiency is below the EPA compliance threshold, indicating an emissions system fault.

high medium

SPN 3364 FMI 1

Aftertreatment �?DEF quality · DEF quality sensor / DEF tank / DEF fluid

Reference guide for SPN 3364 FMI 1 on the Cummins ISB 6.7 engine: the DEF quality sensor detected that DEF concentration or purity is below the required specification.

high medium

SPN 3364 FMI 1

Aftertreatment �?DEF quality · DEF quality sensor / DEF tank / DEF fluid

Reference guide for SPN 3364 FMI 1 on the International A26 engine: the DEF quality sensor detected that DEF concentration is below the required operating specification.

high medium

SPN 175 FMI 0

Engine �?lubrication / cooling · Engine oil cooler / cooling system / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the International A26 engine: engine oil temperature has exceeded the normal operating range.

medium medium

SPN 168 FMI 4

Engine �?electrical / power supply · Battery / alternator / wiring / ECM power supply

Reference guide for SPN 168 FMI 4 on Cummins ISX15 and X15 engines: the ECM detected battery voltage below the normal operating threshold.

medium medium

SPN 168 FMI 4

Engine �?electrical / power supply · Battery / alternator / wiring / MCM power supply

Reference guide for SPN 168 FMI 4 on the Detroit DD15 engine: the MCM detected battery voltage below the normal operating threshold.

high medium

SPN 175 FMI 0

Engine �?lubrication / cooling · Engine oil cooler / cooling system / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the Volvo D13 engine: engine oil temperature exceeded the normal operating range.

high medium

SPN 175 FMI 0

Engine �?lubrication / cooling · Engine oil cooler / cooling system / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the Mack MP8 engine: engine oil temperature has exceeded the normal operating range.

medium medium

SPN 190 FMI 0

Engine �?speed / overspeed protection · Engine control module / overspeed protection

Reference guide for SPN 190 FMI 0 on the Mack MP8 engine: engine speed exceeded the overspeed protection threshold.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / supply lines

Reference guide for SPN 94 FMI 1 on the Detroit DD13 engine: fuel supply pressure to the high-pressure injection system is below the normal operating range.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / regen system / aftertreatment control

Reference guide for SPN 3055 FMI 14 on the PACCAR MX-13 engine: DPF soot load requires a stationary parked regeneration.

medium medium

SPN 3246 FMI 0

Aftertreatment �?DPF · DPF outlet temperature sensor / regen system / dosing injector

Reference guide for SPN 3246 FMI 0 on the Mack MP8 engine: the DPF outlet temperature sensor detected above-normal exhaust temperature at the filter outlet.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / regen system / aftertreatment control

Reference guide for SPN 3055 FMI 14 on the International A26 engine: DPF soot load requires a stationary parked regeneration.

medium medium

SPN 190 FMI 0

Engine �?speed / overspeed protection · Engine control module / overspeed protection

Reference guide for SPN 190 FMI 0 on the International A26 engine: engine speed exceeded the overspeed protection limit.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / supply lines

Reference guide for SPN 94 FMI 1 on the Cummins X12 engine: fuel supply pressure to the high-pressure injection system is below the normal operating range.

stop safely medium

SPN 110 FMI 0

Engine �?cooling · Cooling system / thermostat / coolant temperature sensor / radiator

Reference guide for SPN 110 FMI 0 on the Cummins ISB 6.7 engine: engine coolant temperature has exceeded the normal operating range.

medium medium

SPN 3055 FMI 14

Aftertreatment �?DPF · DPF / regen system

Reference guide for SPN 3055 FMI 14 on the Ford 6.7 Power Stroke: DPF soot load requires a stationary parked regeneration.

high medium

SPN 94 FMI 1

Engine �?fuel system · Fuel lift pump / fuel filter / supply lines

Reference guide for SPN 94 FMI 1 on the PACCAR MX-11 engine: fuel supply pressure to the high-pressure injection system is below the normal operating range.

high medium

SPN 177 FMI 0

Transmission �?fluid / thermal management · Transmission fluid / fluid cooler / temperature sensor

Reference guide for SPN 177 FMI 0 on Eaton UltraShift transmissions: transmission fluid temperature has exceeded the normal operating range.

medium medium

SPN 168 FMI 4

Transmission �?electrical / power supply · Battery / charging system / TCM power supply wiring

Reference guide for SPN 168 FMI 4 on Allison 3000 and 4000 series transmissions: the TCM detected battery supply voltage below the minimum operating threshold or a voltage shorted low condition.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on Cummins ISX15 and X15 engines: the DEF tank level sensor reports fluid below the acceptable threshold, how the inducement sequence advances, and diagnostic approach using Cummins INSITE.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the Detroit DD15 engine: DEF tank level reported below the acceptable threshold by the aftertreatment control system, inducement implications, and how to diagnose using Detroit DiagnosticLink.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the Detroit DD13 engine: DEF tank level sensor reports fluid below the acceptable threshold, staged inducement implications, and diagnostic steps using Detroit DiagnosticLink.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the PACCAR MX-13 engine: DEF tank level sensor reports below-threshold fluid level, inducement stage implications, and diagnostic approach using PACCAR ESA.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the Volvo D13 engine: DEF tank level below the acceptable threshold triggers the aftertreatment inducement sequence; diagnostic approach using VCADS Pro.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the Mack MP8 engine: DEF tank level sensor reports fluid below the acceptable threshold on Mack Anthem and Pinnacle trucks, inducement implications, and diagnostic approach using Premium Tech Tool.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the Cummins ISB 6.7 engine: DEF tank level below the acceptable threshold on medium-duty trucks, buses, and vocational equipment, with diagnostic approach using Cummins INSITE.

medium medium

SPN 1761 FMI 1

Aftertreatment — DEF supply · DEF tank level sensor / DEF supply module

Reference guide for SPN 1761 FMI 1 on the International A26 engine: DEF tank level below the acceptable threshold on International LT and RH Series trucks, inducement implications, and diagnostic approach using International ServiceMaxx.

medium medium

SPN 641 FMI 7

Engine — turbocharger · Variable geometry turbocharger (VGT) actuator

Reference guide for SPN 641 FMI 7 on the PACCAR MX-13 engine: the variable geometry turbocharger actuator is not achieving commanded vane position, common causes including carbon buildup and actuator failure, and diagnostic approach using PACCAR ESA.

medium medium

SPN 641 FMI 7

Engine — turbocharger · Variable geometry turbocharger (VGT) actuator

Reference guide for SPN 641 FMI 7 on the Volvo D13 engine: the variable geometry turbocharger actuator is not achieving commanded vane position, common causes, and diagnostic approach using VCADS Pro.

medium medium

SPN 641 FMI 7

Engine — turbocharger · Variable geometry turbocharger (VGT) actuator

Reference guide for SPN 641 FMI 7 on the Mack MP8 engine: the VGT actuator is not achieving commanded vane positions on Mack Anthem and Pinnacle trucks, common causes, and diagnostic approach using Mack Premium Tech Tool.

medium medium

SPN 641 FMI 7

Engine — turbocharger · Variable geometry turbocharger (VGT) actuator

Reference guide for SPN 641 FMI 7 on the International A26 engine: the variable geometry turbocharger actuator is not responding to commands on International LT and RH Series trucks, common causes, and diagnostic steps using International ServiceMaxx.

medium medium

SPN 168 FMI 4

Engine — electrical / power supply · Battery / alternator / wiring / ECM power supply

Reference guide for SPN 168 FMI 4 on the Detroit DD13 engine: ECM detected battery voltage below the normal operating threshold, common causes including weak batteries and charging system faults, and diagnostic approach using Detroit DiagnosticLink.

medium medium

SPN 168 FMI 4

Engine — electrical / power supply · Battery / alternator / wiring / ECM power supply

Reference guide for SPN 168 FMI 4 on the PACCAR MX-13 engine: EMS detected battery voltage below the normal operating range, with battery, alternator, and wiring as primary diagnostic targets, diagnosed using PACCAR ESA.

medium medium

SPN 168 FMI 4

Engine — electrical / power supply · Battery / alternator / wiring / ECM power supply

Reference guide for SPN 168 FMI 4 on the Volvo D13 engine: ECU detected battery voltage below the normal threshold on VNL and VNR trucks, with battery, alternator, and connection checks as the primary diagnostic path.

medium medium

SPN 168 FMI 4

Engine — electrical / power supply · Battery / alternator / wiring / ECM power supply

Reference guide for SPN 168 FMI 4 on the Mack MP8 engine: ECU detected battery voltage below the normal operating range on Mack Anthem and Pinnacle trucks, common causes, and diagnostic approach using Mack Premium Tech Tool.

medium medium

SPN 3361 FMI 1

Aftertreatment — DEF supply system · DEF supply pump / DEF lines / filter

Reference guide for SPN 3361 FMI 1 on the Detroit DD13 engine: the DEF supply pump is not maintaining adequate pressure for DEF delivery to the dosing injector, with diagnostic approach using Detroit DiagnosticLink.

medium medium

SPN 3361 FMI 1

Aftertreatment — DEF supply system · DEF supply pump / DEF lines / filter

Reference guide for SPN 3361 FMI 1 on the PACCAR MX-13 engine: DEF supply pump is not maintaining adequate pressure for dosing injector delivery, with diagnostic approach using PACCAR ESA.

medium medium

SPN 3361 FMI 1

Aftertreatment — DEF supply system · DEF supply pump / DEF lines / filter

Reference guide for SPN 3361 FMI 1 on the Mack MP8 engine: DEF supply pump pressure is below normal on Mack Anthem and Pinnacle trucks, common causes, and diagnostic approach using Mack Premium Tech Tool.

medium medium

SPN 3361 FMI 1

Aftertreatment — DEF supply system · DEF supply pump / DEF lines / filter

Reference guide for SPN 3361 FMI 1 on the Cummins ISB 6.7 engine: DEF supply pressure is below the normal threshold on medium-duty trucks, buses, and vocational equipment, with diagnostic approach using Cummins INSITE.

medium medium

SPN 3361 FMI 1

Aftertreatment — DEF supply system · DEF supply pump / DEF lines / filter

Reference guide for SPN 3361 FMI 1 on the International A26 engine: DEF supply pressure below the normal threshold on International LT and RH Series trucks, with diagnostic steps using International ServiceMaxx.

medium medium

SPN 102 FMI 1

Engine — turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the PACCAR MX-13 engine: intake manifold boost pressure is below the normal range for operating conditions, indicating a turbocharger, charge air cooler, or sensor issue.

medium medium

SPN 102 FMI 1

Engine — turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the PACCAR MX-11 engine: intake manifold boost pressure below the normal operating range, indicating a VGT, charge air cooler, or sensor fault, diagnosed using PACCAR ESA.

medium medium

SPN 102 FMI 1

Engine — turbocharger / charge air · Turbocharger / charge air cooler / boost pressure sensor

Reference guide for SPN 102 FMI 1 on the Cummins X12 engine: intake manifold boost pressure below the normal range, indicating a VGT, boost leak, or sensor fault on the X12 platform.

medium medium

SPN 3480 FMI 5

Aftertreatment — DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the Detroit DD13 engine: the DEF dosing injector control circuit has an open circuit fault, preventing DEF delivery to the SCR catalyst.

medium medium

SPN 3480 FMI 5

Aftertreatment — DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the Cummins ISB 6.7 engine: the DEF dosing injector circuit has an open fault, preventing DEF from being injected into the exhaust stream for SCR operation.

medium medium

SPN 3480 FMI 5

Aftertreatment — DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the International A26 engine: the DEF dosing injector control circuit has an open fault on International LT and RH Series trucks, with diagnostic approach using International ServiceMaxx.

medium medium

SPN 3480 FMI 5

Aftertreatment — DEF dosing system · DEF dosing injector / wiring circuit

Reference guide for SPN 3480 FMI 5 on the Cummins X12 engine: the DEF dosing injector control circuit is open, preventing DEF from reaching the SCR catalyst.

medium medium

SPN 412 FMI 0

Engine — EGR system · EGR cooler / EGR temperature sensor

Reference guide for SPN 412 FMI 0 on the Cummins ISB 6.7 engine: EGR temperature is above the normal operating range after the EGR cooler, indicating restricted coolant flow, a failing EGR cooler, or a sensor issue.

medium medium

SPN 412 FMI 0

Engine — EGR system · EGR cooler / EGR temperature sensor

Reference guide for SPN 412 FMI 0 on the International A26 engine: EGR outlet temperature is above the normal range on International LT and RH Series trucks, with diagnostic approach using International ServiceMaxx.

medium medium

SPN 175 FMI 0

Engine — lubrication / oil temperature · Engine oil cooler / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the Detroit DD13 engine: engine oil temperature is above the normal operating range, indicating oil cooler, cooling system, or sensor issues, diagnosed using Detroit DiagnosticLink.

medium medium

SPN 175 FMI 0

Engine — lubrication / oil temperature · Engine oil cooler / oil temperature sensor

Reference guide for SPN 175 FMI 0 on the Cummins ISB 6.7 engine: engine oil temperature above the normal operating range on medium-duty trucks, buses, and vocational equipment, with diagnostic approach using Cummins INSITE.

high medium

SPN 3246 FMI 0

Aftertreatment — DPF · DPF outlet temperature sensor / aftertreatment system

Diagnostic reference for SPN 3246 FMI 0 on the Detroit DD13: the aftertreatment DPF outlet gas temperature sensor has reported a value above the critical high threshold, indicating a potential over-temperature event in the aftertreatment system that requires prompt investigation.

high medium

SPN 3246 FMI 0

Aftertreatment — DPF · DPF outlet temperature sensor / aftertreatment system

Diagnostic guide for SPN 3246 FMI 0 on Cummins ISB 6.7 engines: the DPF outlet gas temperature has exceeded the critical high threshold, signaling an aftertreatment thermal event that requires identification of the hydrocarbon source before any regeneration attempt.

high medium

SPN 3246 FMI 0

Aftertreatment — DPF · DPF outlet temperature sensor / aftertreatment system

Diagnostic reference for SPN 3246 FMI 0 on the Navistar International A26 engine: the aftertreatment DPF outlet temperature sensor is reporting a value above the critical high threshold, indicating an uncontrolled thermal event in the aftertreatment system that must be investigated before regeneration is attempted.

high medium

SPN 3246 FMI 0

Aftertreatment — DPF · DPF outlet temperature sensor / aftertreatment system

Diagnostic reference for SPN 3246 FMI 0 on the Cummins X12 engine: the DPF outlet gas temperature sensor has reported a value above the critical high threshold, indicating an aftertreatment thermal event that requires root cause identification before further regeneration activity.

high medium

SPN 3246 FMI 0

Aftertreatment — DPF · DPF outlet temperature sensor / aftertreatment system

Diagnostic reference for SPN 3246 FMI 0 on the PACCAR MX-11 engine: the aftertreatment DPF outlet gas temperature sensor is reporting a value above the critical high threshold, indicating a potential uncontrolled thermal event in the aftertreatment system.

medium medium

SPN 3055 FMI 14

Aftertreatment — DPF · DPF / aftertreatment system / regeneration system

Reference guide for SPN 3055 FMI 14 on the Detroit DD13: the DPF soot load has reached the level where a parked (stationary) active regeneration is required because driving conditions are not producing adequate exhaust temperatures to complete a driving regen.

medium medium

SPN 3055 FMI 14

Aftertreatment — DPF · DPF / aftertreatment system / regeneration system

Reference guide for SPN 3055 FMI 14 on the Cummins ISB 6.7: the DPF soot load has reached the level requiring a parked stationary regeneration, because active driving regeneration has not been sufficient to manage soot accumulation under current duty cycle conditions.

medium medium

SPN 3055 FMI 14

Aftertreatment — DPF · DPF / aftertreatment system / regeneration system

Reference guide for SPN 3055 FMI 14 on the Cummins X12: the DPF soot load has reached the threshold requiring a parked stationary regeneration because normal driving regen cycles have not been sufficient to manage soot accumulation.

medium medium

SPN 3055 FMI 14

Aftertreatment — DPF · DPF / aftertreatment system / regeneration system

Reference guide for SPN 3055 FMI 14 on the PACCAR MX-11: the DPF soot load has reached the level where a parked stationary regeneration is required because driving conditions have not produced sufficient exhaust temperatures for the regen system to clear accumulated soot.

medium medium

SPN 27 FMI 9

Engine — EGR System · EGR valve / EGR valve position sensor / CAN bus

Diagnostic reference for SPN 27 FMI 9 on the Detroit DD15: the ECM is receiving EGR valve position data at an abnormal rate, indicating a CAN bus communication fault or an EGR valve actuator assembly issue affecting the position signal update frequency.

medium medium

SPN 27 FMI 9

Engine — EGR System · EGR valve / EGR valve position sensor / CAN bus

Diagnostic reference for SPN 27 FMI 9 on the Detroit DD13: the ECM is receiving EGR valve position updates at an abnormal rate, typically indicating a CAN bus communication issue or a connector and wiring fault at the EGR valve actuator assembly.

medium medium

SPN 27 FMI 9

Engine — EGR System · EGR valve / EGR valve position sensor / CAN bus

Diagnostic reference for SPN 27 FMI 9 on the PACCAR MX-13: the ECM is receiving EGR valve position data at an abnormal rate, most commonly due to a connector or wiring fault at the EGR actuator or a CAN bus communication issue on the circuit between the EGR actuator and the ECM.

medium medium

SPN 27 FMI 9

Engine — EGR System · EGR valve / EGR valve position sensor / CAN bus

Diagnostic reference for SPN 27 FMI 9 on the Mack MP8: the ECM is receiving EGR valve position data at an abnormal update rate, typically indicating a CAN bus communication issue or a connector and wiring fault at the EGR valve actuator.

medium medium

SPN 27 FMI 9

Engine — EGR System · EGR valve / EGR valve position sensor / CAN bus

Diagnostic reference for SPN 27 FMI 9 on the Cummins ISB 6.7: the ECM is receiving EGR valve position data at an abnormal update rate over the CAN bus, most commonly due to a connector or wiring fault at the EGR valve actuator or a CAN bus signal integrity issue.

medium medium

SPN 27 FMI 9

Engine — EGR System · EGR valve / EGR valve position sensor / CAN bus

Diagnostic reference for SPN 27 FMI 9 on the Navistar International A26: the ECM is receiving EGR valve position data at an abnormal update rate, most commonly indicating a connector or wiring fault at the EGR valve actuator or a CAN bus communication issue affecting the EGR actuator node.

high medium

SPN 1569 FMI 31

Engine — Protection System · Engine ECM / engine protection system / multiple sensors

Diagnostic reference for SPN 1569 FMI 31 on the Cummins X12: the ECM has activated an engine protection torque derate, indicating that one or more engine protection conditions — such as high coolant temperature, low oil pressure, or another critical parameter — have reached the derate threshold.

high medium

SPN 190 FMI 0

Engine — Speed / Governor · Engine speed sensor / ECM governor / fuel system

Diagnostic reference for SPN 190 FMI 0 on the Detroit DD13: the engine speed sensor has reported a value above the maximum permissible engine speed limit, triggering the overspeed protection response.

high medium

SPN 190 FMI 0

Engine — Speed / Governor · Engine speed sensor / ECM governor / fuel system

Diagnostic reference for SPN 190 FMI 0 on the Cummins ISB 6.7: the ECM has detected engine speed above the maximum permissible limit, activating the overspeed protection response to prevent mechanical damage.

high medium

SPN 190 FMI 0

Engine — Speed / Governor · Engine speed sensor / ECM governor / fuel system

Diagnostic reference for SPN 190 FMI 0 on the Cummins X12: the ECM has detected engine speed above the overspeed threshold, activating the overspeed protection fuel cut to prevent mechanical damage.

high medium

SPN 190 FMI 0

Engine — Speed / Governor · Engine speed sensor / ECM governor / fuel system

Diagnostic reference for SPN 190 FMI 0 on the PACCAR MX-11: the ACM has detected engine speed above the overspeed threshold and activated the overspeed protection response to prevent mechanical damage from excessive RPM.

medium medium

SPN 157 FMI 18

Engine — Fuel System · Common rail / high-pressure fuel pump / fuel pressure sensor / fuel injectors

Diagnostic reference for SPN 157 FMI 18 on the Navistar International A26: the common rail fuel pressure is reading below the normal operational range at the moderately severe level, indicating a fuel delivery deficit that requires investigation of the high-pressure fuel circuit.

medium medium

SPN 157 FMI 18

Engine — Fuel System · Common rail / high-pressure fuel pump / fuel pressure sensor / fuel supply circuit

Diagnostic reference for SPN 157 FMI 18 on the Cummins X12: the common rail fuel pressure sensor is reading below the normal operating range at the moderately severe level, indicating the fuel delivery system cannot maintain the commanded rail pressure.

medium medium

SPN 157 FMI 18

Engine — Fuel System · Common rail / high-pressure fuel pump / fuel pressure sensor / fuel supply circuit

Diagnostic reference for SPN 157 FMI 18 on the PACCAR MX-11: the fuel rail pressure sensor is reading below the normal operating range at the moderately severe level, indicating the fuel delivery system is not maintaining the commanded high-pressure rail level.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant reservoir / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Detroit DD13: the coolant level sensor has detected engine coolant below the minimum safe operating level, indicating a potential coolant loss condition that requires investigation before continued engine operation.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / deaeration tank / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Detroit DD15: the coolant level sensor has reported coolant below the minimum safe threshold, indicating a potential cooling system leak or coolant loss that must be investigated before continued high-load operation.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant reservoir / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Cummins ISB 6.7: the coolant level sensor has detected engine coolant below the minimum acceptable level, alerting the driver and maintenance personnel to a potential cooling system leak or coolant loss condition.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant expansion tank / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Cummins X12: the coolant level sensor has reported engine coolant below the minimum safe level, indicating potential cooling system coolant loss requiring investigation before continued high-load operation.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant reservoir / cooling system

Diagnostic reference for SPN 111 FMI 1 on the PACCAR MX-13: the coolant level sensor has detected engine coolant below the minimum safe operating level, indicating a potential cooling system leak or coolant loss that must be investigated.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant deaeration tank / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Mack MP8: the coolant level sensor has detected engine coolant below the safe minimum level, indicating a cooling system leak or coolant loss that requires investigation before continued operation under high load.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant expansion tank / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Navistar International A26: the coolant level sensor has detected engine coolant below the minimum safe level, signaling a potential coolant loss condition that requires immediate inspection before high-load operation.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant expansion tank / cooling system

Diagnostic reference for SPN 111 FMI 1 on the Cummins ISX15 and X15: the coolant level sensor has detected engine coolant below the minimum safe level, indicating potential cooling system coolant loss that requires investigation before high-load operation.

high medium

SPN 111 FMI 1

Engine — Cooling System · Coolant level sensor / coolant reservoir / cooling system

Diagnostic reference for SPN 111 FMI 1 on the PACCAR MX-11: the coolant level sensor has detected engine coolant below the minimum safe threshold, indicating a cooling system coolant loss condition that requires inspection before continued operation.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the Cummins ISX15 and X15: the SCR system is not converting NOx at the expected efficiency level, indicating a DEF quality problem, DEF dosing fault, or SCR catalyst degradation that requires investigation.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the Cummins ISB 6.7: the SCR system NOx conversion efficiency is below the moderately severe threshold, indicating a DEF quality issue, DEF dosing fault, or SCR catalyst degradation.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the Detroit DD13: the SCR system is converting NOx below the moderately severe efficiency threshold, indicating a DEF quality issue, dosing fault, or SCR catalyst degradation.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the Detroit DD15: the SCR system is not achieving the required NOx conversion efficiency, indicating a DEF quality problem, DEF dosing fault, or SCR catalyst degradation requiring prompt investigation.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the PACCAR MX-13: the SCR system NOx conversion efficiency has fallen below the moderately severe threshold, indicating a DEF quality issue, dosing system fault, or SCR catalyst problem.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the PACCAR MX-11: the SCR conversion efficiency has fallen below the moderately severe threshold, indicating a DEF quality issue, dosing system fault, or SCR catalyst problem requiring investigation.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the Mack MP8: the SCR system NOx conversion efficiency is below the moderately severe threshold, requiring investigation of DEF quality, the dosing system, and the SCR catalyst.

medium medium

SPN 4364 FMI 18

Aftertreatment — SCR · SCR catalyst / DEF dosing system / NOx sensors / DEF quality

Diagnostic reference for SPN 4364 FMI 18 on the Navistar International A26: the SCR system is not achieving the required NOx conversion efficiency, indicating a DEF quality problem, dosing system fault, or SCR catalyst degradation.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Cummins ISX15 and X15: the DEF tank temperature sensor is reading below the normal operational range, typically indicating that the DEF is at or below freezing temperature or that the DEF tank heater is not functioning correctly.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Cummins ISB 6.7: the DEF tank temperature sensor is reading below the normal operational range, indicating the DEF may be near or at freezing temperature or the tank heater is not functioning correctly.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Detroit DD13: the DEF tank temperature sensor is reading below the normal operational range, indicating the DEF may be frozen or the tank heater is not maintaining adequate DEF temperature in cold weather.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Detroit DD15: the DEF tank temperature sensor is reading below the normal operational range, indicating the DEF is approaching or at freezing temperature or the DEF tank heater circuit is not functioning correctly.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the PACCAR MX-13: the DEF tank temperature sensor is reading below the normal operational range, indicating DEF may be frozen or the DEF tank heater is not maintaining adequate temperature in cold weather.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Mack MP8: the DEF tank temperature sensor is reading below the normal operational range, typically indicating DEF is approaching or at freezing temperature or the DEF tank heater is not functioning correctly in cold weather.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Navistar International A26: the DEF tank temperature sensor is reading below the normal operational range, indicating the DEF is near freezing temperature or the tank heater is not functioning correctly.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the PACCAR MX-11: the DEF tank temperature sensor is reading below the normal operational range, indicating the DEF is near or at its freezing point or the DEF tank heater is not maintaining adequate temperature in cold weather.

medium medium

SPN 3031 FMI 1

Aftertreatment — SCR · DEF tank / DEF tank temperature sensor / DEF tank heater

Diagnostic reference for SPN 3031 FMI 1 on the Cummins X12: the DEF tank temperature sensor is reading below the normal operational range, indicating the DEF is near or at freezing temperature or the tank heater is not maintaining adequate temperature in cold weather.

FAQ

What is the difference between active and inactive fault codes?

An active code means the ECM is currently detecting the fault condition right now. An inactive or stored code means the condition was detected at some point but is not currently present. Active codes take priority — inactive codes still need investigation but may have already been addressed or could be intermittent. Use the fault code lookup to search by SPN, FMI, or keyword.

Do fault codes tell you exactly which part has failed?

No. A fault code tells you what the control module observed, not which component definitively failed. The same code can result from a wiring issue, a bad sensor, a connector problem, or an actual component failure. Use codes as a starting point, not a final diagnosis. Browse diagnostic guides for structured first-check procedures.

What should I record before clearing a fault code?

Before clearing, record the full code (SPN and FMI if available), whether it is active or inactive, all warning lamps and derate conditions, any related codes, and the vehicle's recent operating history. Clearing codes without recording this information can make diagnosis much harder.