B161B Code: Meaning, Causes, and Symptoms | OBD2 Codes

B161B – Courtesy/Dome Lamp Control Circuit Low

 

B161B Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B161B Possible Causes

 

Faulty Courtesy/Dome Lamp,Courtesy/Dome Lamp harness is open or shorted,Courtesy/Dome Lamp circuit poor electrical connection,Faulty Instrument Cluster

 

B161B Description

 

The Instrument Cluster monitors the Panel Dimmer Input. The Instrument Cluster sets the OBDII code when the Instrument Cluster detects a Short to Ground on the Courtesy Lamps Driver circuit.