B1738 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1738 – Mirror Driver Horizontal Switch Circuit Open


B1738 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1738 Possible Causes


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


B1738 Description


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