B1155 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1155 – Gauge Control Module Lost Communication With Combination Switch Control Unit

 

B1155 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1155 Possible Causes

 

Faulty Combination Switch Control Unit,Faulty Gauge Control Module,Gauge Control Module harness is open or shorted,Gauge Control Module circuit poor electrical connection

 

B1155 Description

 

The Gauge Control Module monitors the Combination Switch Control Unit. The Gauge Control Module sets the OBDII code when the Combination Switch Control Unit communication (Headlight Switch Message) is not to factory specifications.