What does code C05A3 mean?

Q: What does code C05A3 mean?

Wheel Speed Sensors Supply Circuit High. This code means the antilock braking system (ABS) control module has detected an abnormally high voltage on the power supply circuit that feeds one or more wheel speed sensors. The module expects a stable reference voltage, typically near battery voltage, and when the circuit reads above its programmed threshold it stores C05A3 and disables ABS and traction control to protect the system.

DTC codes / C05xx · Brakes, steering and suspension / C05A3

C05A3Wheel Speed Sensors Supply Circuit High

This code means the antilock braking system (ABS) control module has detected an abnormally high voltage on the power supply circuit that feeds one or more wheel speed sensors. The module expects a stable reference voltage, typically near battery voltage, and when the circuit reads above its programmed threshold it stores C05A3 and disables ABS and traction control to protect the system.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

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.