B1594 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1594 – Autolamp Delay Decrease Circuit Short To Ground


B1594 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1594 Possible Causes


Faulty Autolamp Delay,Autolamp Delay harness is open or shorted,Autolamp Delay circuit poor electrical connection,Faulty Body Control Module (BCM)


B1594 Description


The Body Control Module (BCM) monitors the Autolamp Delay. The BCM sets the OBDII code when the Autolamp Delay is not to factory specifications.