C1237 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1237 – Speed Wheel Rear Input Signal Missing


C1237 Possible Symptoms


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


C1237 Possible Causes


Faulty Rear ABS Sensor,Rear ABS Sensor harness is open or shorted,Rear ABS Sensor circuit poor electrical connection,Faulty Wheel Speed Sensor,Wheel bearing


C1237 Description


The Anti-Lock Brake System (ABS) Actuator And Electric Unit (Control Unit) monitors the Rear Anti-Lock Brake Sensor. The ABS Actuator And Electric Unit sets the OBDII code when the Rear Anti-Lock Brake Sensor is not to factory specifications.