Bendix EC-60 UDS 157 / SPN 796 FMI 13 — SA Right PMV Configuration Error

Code Details

Plain-English Meaning

The EC-60 configuration stored for the steer axle right PMV does not match the module or physical installation. This is a setup issue — typically from an ECU replacement or axle modification — not a valve hardware failure.

The Bendix EC-60 table maps UDS code 157, blink code 08-08, J1587 008-13, and J1939 SPN 796 FMI 13 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
• Code appears after module replacement or axle reconfiguration
• Valve may test electrically normal
• ABS disabled on the affected channel
• Code returns after clearing until configuration is corrected

Possible Causes

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

• Replacement EC-60 not configured to match the vehicle axle and PMV layout
• Configuration data not transferred when the module was swapped
• Incorrect axle count or PMV assignment in EC-60 parameters
• Wiring harness plugged into incorrect PMV connector position after axle work
• Software update or reset that reverted to default configuration

First Checks

• Connect Bendix ACOM and read the full EC-60 configuration to identify the mismatched parameter.
• Compare programmed PMV layout to the actual axle and valve installation on this vehicle.
• If the module was recently replaced, use the original configuration or vehicle build sheet to re-enter correct parameters.
• Verify all PMV connectors are plugged into the correct valve positions on the axle.
• After correcting configuration, clear and perform a functional check with ACOM before returning to service.

Can I Keep Driving?

A pressure modulation valve fault means the EC-60 may not be able to independently modulate brake pressure at the affected wheel during ABS activation. Normal brake application still functions, but anti-lock control at that corner is compromised. If the PMV cannot release pressure during a lockup event, wheel lockup may occur despite the ABS system being otherwise functional. Address before operating in conditions requiring aggressive braking.

Related Lookup Pages

• FMI 13 explanation
• Bendix manufacturer hub
• ABS / ATC / ESP fault codes
• ABS Light symptom page
• Brake Warning Light symptom page
• Search this code