B1321 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1321 – Driver Door Ajar Circuit Short To Battery


B1321 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1321 Possible Causes


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


B1321 Description


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