B1789 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1789 – Mirror Passenger Down Circuit Short To Ground


B1789 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1789 Possible Causes


Faulty Mirror Passenger Down Motor,Mirror Passenger Down Motor harness is open or shorted,Mirror Passenger Down Motor circuit poor electrical connection,Faulty Body Control Module (BCM)


B1789 Description


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