B1313 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1313 – Interior Lighting Output Circuit Short

 

B1313 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1313 Possible Causes

 

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

 

B1313 Description

 

The Body Control Module (BCM) fuse supplies power for the interior courtesy lamps (and the running board lamps if equipped). When the BCM receives the required input (such as an open door or request from the instrument panel dimmer switch), it provides voltage to the interior courtesy lamps. This Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground or open from the courtesy lighting output circuit.