C005A Code: Meaning, Causes, and Symptoms | OBD2 Codes

C005A – Rear Wheel Speed Sensor Circuit


C005A Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C005A Possible Causes


Faulty Rear Wheel Speed Sensor,Rear Wheel Speed Sensor harness is open or shorted,Rear Wheel Speed Sensor circuit poor electrical connection,Faulty Electronic Brake Control Module (EBCM)


C005A Description


The wheel speed sensor receives ignition voltage from the Electronic Brake Control Module (EBCM) and provides a DC square wave signal back to the module. As the wheel spins, the EBCM uses the frequency of the square wave signal to calculate the wheel speed.