B2500 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2500 – Courtesy Lamp Output Check Short To Battery

 

B2500 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B2500 Possible Causes

 

Faulty Courtesy Lamp,Courtesy Lamp harness is open or shorted,Courtesy Lamp circuit poor electrical connection

 

B2500 Description

 

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