Bendix EC-60 UDS 38 / SPN 627 FMI 5 — Battery Voltage Input Open Circuit

Code Details

Plain-English Meaning

The EC-60 is not detecting any supply voltage on a power input — the path is open. This is different from low voltage; the module sees no voltage at all, pointing to a blown fuse, a broken wire, or a disconnected connector upstream.

The Bendix EC-60 table maps UDS code 38, blink code 06-04, J1587 251-05, and J1939 SPN 627 FMI 5 to this ABS/ATC/ESP diagnostic entry. The Bendix source indicates an ABS and/or ATC/ESP warning lamp can be on for this entry. The EC-60 continuously monitors wheel speed sensor circuits, pressure modulation valve output drivers, supply voltage quality, J1939 network data from the engine and transmission controllers, and internal self-diagnostic routines. When any monitored value falls outside its acceptable range — or a circuit does not respond as the module expects — the EC-60 logs a diagnostic trouble code and may disable the affected ABS, ATC, or ESP function. Bendix ACOM Pro or a compatible diagnostic interface is the required tool for reading live sensor data, running actuator tests, performing calibrations, clearing latched codes, and adjusting EC-60 configuration parameters. Generic J1939 scan tools can read the SPN/FMI but cannot access EC-60-specific live data screens or configuration settings.

Common Symptoms

• ABS and ATC/ESP lamps on
• EC-60 may not power up if the main supply is affected
• Other circuits sharing the same fuse or supply may also be dead
• Condition is typically constant, not intermittent

Possible Causes

Possible causes may include the items below. The list is not a parts diagnosis.

• Blown ABS system fuse or fusible link
• Broken supply wire between fuse panel and EC-60 power connector
• Corroded or disconnected connector at the EC-60 power input
• Relay failure in the ABS power supply circuit
• Harness damage from chafing or rodent activity

First Checks

• Check all fuses and fusible links in the ABS/EC-60 power supply circuit (fuse box diagram in the vehicle service manual).
• Measure voltage at the EC-60 power connector with ignition on — no voltage confirms the open is upstream of the module.
• Trace the supply circuit from the fuse to the EC-60 for broken wires or disconnected connectors.
• Check for a relay in the circuit; measure coil resistance and verify it switches with ignition on.
• After restoring supply voltage, clear codes and verify ABS function with a short test drive.

Can I Keep Driving?

Power supply faults suspend ABS and stability functions while the voltage condition persists — normal hydraulic or air base braking continues unaffected. If the vehicle is experiencing voltage-related issues, other safety systems may also be affected. Have the charging system and battery evaluated alongside the ABS repair — a recurring power fault that is cleared without addressing the root cause may produce intermittent loss of anti-lock protection without warning.

Related Lookup Pages

• FMI 5 explanation
• Bendix manufacturer hub
• ABS / ATC / ESP fault codes
• ABS Light symptom page
• Brake Warning Light symptom page
• Search this code