B16D1 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B16D1 – Left DRL Lamp Control Circuit High

 

B16D1 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B16D1 Possible Causes

 

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

 

B16D1 Description

 

The Body Control Module (BCM) monitors the Left Daytime Running Lights (DRL) Lamp. The BCM sets the OBDII code when the Left DRL Lamp is not to factory specifications.