B1580 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1580 – Dim Panel Increase Input Circuit Open

 

B1580 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1580 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)

 

B1580 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.