B1312 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1312 – Lamp Headlamp Input Circuit Short To Battery

 

B1312 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1312 Possible Causes

 

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

 

B1312 Description

 

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