C1209 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1209 – ABS Rear Isolation Valve Circuit Short To Ground


C1209 Possible Symptoms


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


C1209 Possible Causes


Faulty ABS Rear Isolation Valve,ABS Rear Isolation Valve harness is open or shorted,ABS Rear Isolation Valve circuit poor electrical connection


C1209 Description


The Anti-Lock Brake System (ABS) Module monitors the ABS Rear Isolation Valve. The ABS Module sets the OBDII code when the ABS Rear Isolation Valve is not to factory specifications.