C0004 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0004 – TCS Control Channel ‘B’ Valve 2

 

C0004 Possible Symptoms

 

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

 

C0004 Possible Causes

 

Faulty TCS Control Channel ‘B’ Valve 2,TCS Control Channel ‘B’ Valve 2 harness is open or shorted,TCS Control Channel ‘B’ Valve 2 circuit poor electrical connection

 

C0004 Description

 

The Engine Control Module (ECM) monitors the TCS Control Channel ‘B’ Valve 2. The ECM sets the OBDII code when the TCS Control Channel ‘B’ Valve 2 is not to factory specifications.