C1138 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1138 – 4-Wheel Active Steer Circuit


C1138 Possible Symptoms


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


C1138 Possible Causes


Faulty Anti-Lock Brake System (ABS) Actuator and Control Unit,4WAS System


C1138 Description


The ABS actuator and electric unit (control unit) and the 4-Wheel Active Steer (4WAS) control unit exchange signals via the Controlled Area Network (CAN) communication line.