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