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.