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.