B1548 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1548 – Power Window Master Circuit Open

 

B1548 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1548 Possible Causes

 

Faulty Power Window Master Switch,Power Window Master Switch harness is open or shorted,Power Window Master Switch circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B1548 Description

 

The Body Control Module (BCM) monitors the Power Window Master Switch. The BCM sets the OBDII code when the Power Window Master Switch is not to factory specifications.