B1331 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1331 – Decklid Ajar Rear Door Circuit Failure


B1331 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1331 Possible Causes


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


B1331 Description


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