B1578 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1578 – Lamp Park Input Circuit Short To Ground

 

B1578 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1578 Possible Causes

 

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

 

B1578 Description

 

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