Code Details
| Display code | Navistar Aware SPN 701 FMI 13 |
|---|---|
| SPN | 701 |
| FMI | 13 |
| OEM code | Navistar / International Aware SPN 701 FMI 13 |
| Manufacturer | Navistar / International |
| System | Aware Vehicle Intelligence / Telematics |
| Component | Analog Input 1 — calibration |
| Source address | Unknown or not applicable |
| Severity | low |
| Review status | ai source checked |
| Source confidence | high |
| Last reviewed | 2026-03-26 |
Plain-English Meaning
The Navistar Aware module uses a 5-point calibration curve to map raw input voltages to engineering units for each analog input. The X values in this curve are the voltage breakpoints — they must increase from point 1 to point 5. If any X value is equal to or lower than the previous one, the calibration is invalid and this fault becomes active.
Navistar S08312 maps Navistar Aware SPN 701 FMI 13 to Analog Input 1 FMI 13 — out of calibration at (Grey connector, Pin 9). FMI 13 in J1939 terminology indicates a calibration or configuration error. The Aware module validates that the 5-point curve's X axis is strictly ascending; a non-ascending sequence triggers this fault.
Common Symptoms
- Aware Vehicle Intelligence alert active after configuration change or initial setup
- Analog Input 1 may display an incorrect or nonsensical engineering unit value in the fleet portal
- Fault typically appears immediately after a configuration upload rather than developing over time
Possible Causes
Possible causes may include the items below. The list is not a parts diagnosis.
- Analog Input 1 5-point calibration curve was entered with X values that are not strictly ascending — data entry error during configuration
- Configuration file uploaded to the Aware module contains a calibration table that was not validated before upload
- Calibration curve was copied from another input without adjusting the voltage breakpoints for the new sensor's range
First Checks
- Review the Analog Input 1 calibration curve in the Aware module configuration — check all five X values and confirm each is strictly greater than the previous.
- If the configuration was recently changed, compare the current calibration to the expected values for the sensor connected to this input.
- Correct any non-ascending X values and reload the configuration, then verify the fault clears.
- If the calibration was loaded from a file, validate the file before uploading to other vehicles to prevent the same issue.
Can I Keep Driving?
Severity depends on active status, warning lamps, affected system, and related codes. Stop safely for red stop lamps, brake warnings, oil pressure warnings, high coolant temperature warnings, severe derate, or any abnormal vehicle-control concern.
Related Lookup Pages
Sources
- Navistar Aware Vehicle Intelligence Diagnostic Trouble Codes S08312 Navistar / International Truck Body Builder · oem · accessed 2026-05-05 · confidence high
Source: Navistar / International Truck Body Builder, Navistar Aware Vehicle Intelligence Diagnostic Trouble Codes S08312. This page paraphrases factual fields only and is not a substitute for the original document.
Open source - Navistar Engine Diagnostic Trouble Code Body Builder References Navistar / International Truck Body Builder · oem · accessed 2026-05-05 · confidence medium
Source: Navistar / International Truck Body Builder, Navistar Engine Diagnostic Trouble Code Body Builder References. This page paraphrases factual fields only and is not a substitute for the original document.
Open source
FAQ
Does Navistar Aware SPN 701 FMI 13 affect sensor readings while it is active?
Yes. If the calibration curve is invalid, the Aware module cannot correctly translate the raw input voltage to an engineering unit value. Readings from this input may be incorrect or missing in the fleet portal while the fault is active.
Can Navistar Aware SPN 701 FMI 13 appear on a new vehicle that has never been configured?
If the Aware module ships with a default configuration and the default calibration curve for this input has non-ascending values (for example, all zeros), the fault may be present from the start until a valid calibration is programmed. Check the current configuration before assuming a hardware issue.
Is FMI 13 on the Navistar Aware module the same as FMI 13 on an engine ECM?
FMI 13 has the same J1939-standard definition in both contexts: out of calibration. However, the specific trigger condition is defined by the module. On the Navistar Aware module, FMI 13 for analog inputs specifically means the 5-point curve X values are not ascending — different from how an engine ECM might define an out-of-calibration condition for a sensor.