What does code C055B mean?

Q: What does code C055B mean?

ABS Pump Motor Supply Voltage Circuit A Low. C055B indicates that the anti-lock brake system (ABS) control module has detected an abnormally low voltage on the power supply circuit that feeds the ABS pump motor, specifically on circuit A. The module monitors the voltage at the pump motor supply terminal and sets this code when the voltage falls below a calibrated threshold, which can prevent the pump from running during an ABS event.

DTC codes / C05xx · Brakes, steering and suspension / C055B

C055BABS Pump Motor Supply Voltage Circuit A Low

C055B indicates that the anti-lock brake system (ABS) control module has detected an abnormally low voltage on the power supply circuit that feeds the ABS pump motor, specifically on circuit A. The module monitors the voltage at the pump motor supply terminal and sets this code when the voltage falls below a calibrated threshold, which can prevent the pump from running during an ABS event.

SystemChassis

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.