B1539 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1539 – Mirror Driver Switch Assembly Circuit Failure

 

B1539 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1539 Possible Causes

 

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

 

B1539 Description

 

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