B1646 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1646 – Mirror Passenger Right Circuit Short To Ground

 

B1646 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1646 Possible Causes

 

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

 

B1646 Description

 

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