B1559 – Door Lock Cylinder Circuit Failure

B1559 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B1559 Possible Causes

Faulty Door Lock Cylinder,Door Lock Cylinder harness is open or shorted,Door Lock Cylinder circuit poor electrical connection,Faulty Body Control Module (BCM)

B1559 Description

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