C1177 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1177 – Control Area Network-Local Area Network Converter Control Unit Battery Voltage Power Supply Circuit

 

C1177 Possible Symptoms

 

Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

 

C1177 Possible Causes

 

Faulty Local Area Network Converter Control Unit,Local Area Network Converter Control Unit harness is open or shorted,Local Area Network Converter Control Unit circuit poor electrical connection

 

C1177 Description

 

The Engine Control Module (ECM) monitors the Local Area Network Converter Control Unit. The ECM sets the OBDII code when the Local Area Network Converter Control Unit is not to factory specifications.