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
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.