B1503 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1503 – Lamp Turn Signal Right Circuit Failure

 

B1503 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1503 Possible Causes

 

Faulty Lamp Turn Signal Right,Lamp Turn Signal Right harness is open or shorted,Lamp Turn Signal Right circuit poor electrical connection

 

B1503 Description

 

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