OBD-II code · Chassis
C055C ABS Pump Motor Supply Voltage Circuit A Range/Performance
ABS pump motor supply voltage A drifts or fluctuates outside spec.
Is it safe to drive with C055C?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyConnector with high resistance
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- ABS Pump Motor Supply A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.