B12BC Code: Meaning, Causes, and Symptoms | OBD2 Codes

B12BC – Mirror Position Sensor Supply Circuit Short To Ground

 

B12BC Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B12BC Possible Causes

 

Faulty Mirror Position Sensor,Mirror Position Sensor harness is open or shorted,Mirror Position Sensor circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B12BC Description

 

The Body Control Module (BCM) monitors the Mirror Position Sensor. The BCM sets the OBDII code when the Mirror Position Sensor is not to factory specifications.