B1584 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1584 – Dim Panel Decrease Input Circuit Open


B1584 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1584 Possible Causes


Faulty Dim Panel Switch,Dim Panel Switch harness is open or shorted,Dim Panel Switch circuit poor electrical connection,Faulty Body Control Module (BCM)


B1584 Description


The Body Control Module (BCM) monitors the Dim Panel Switch. The BCM sets the OBDII code when the Dim Panel Switch is not to factory specifications.