B1734 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1734 – Mirror Driver Vertical Switch Circuit Open


B1734 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1734 Possible Causes


Faulty Mirror Driver Vertical Switch,Mirror Driver Vertical Switch harness is open or shorted,Mirror Driver Vertical Switch circuit poor electrical connection,Faulty Body Control Module (BCM)


B1734 Description


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