Chassis
generic / SAE
C0727
Trailer Connector Circuit Malfunction
The chassis or trailer brake module has detected a fault in the trailer wiring connector — for example open lighting circuit or short to ground. Trailer brake and lighting functions may be unavailable.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number7 / 27
Possible causes
- Connector pins corroded or bent high
- Short or open in trailer wiring medium
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–300 €
- Estimated time: 0.3–1.5 h
- Component: trailer connector
- Component: trailer wiring
- Component: trailer brake module
Sources
References
sae:J2012