C1278 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1278 – Steering Wheel Angle 1 And 2 Signal Faulted


C1278 Possible Symptoms


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


C1278 Possible Causes


Faulty Steering Wheel Angle Sensor,Steering Wheel Angle Sensor harness is open or shorted,Steering Wheel Angle Sensor circuit poor electrical connection


C1278 Description


The steering wheel rotation (in degrees) is sent to the Anti-Lock Brake System (ABS) module. Voltage is supplied to the steering wheel angle sensor from the ABS module and ground is provided by the ABS module. The steering wheel rotation sensor monitor the steering wheel position when the slotted wheel in the clockspring assembly rotates through the infrared light generated by the sensor.