B1571 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1571 – Door Ajar Left Right Switch Circuit Failure

 

B1571 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1571 Possible Causes

 

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

 

B1571 Description

 

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