C0004
TCS Control Channel B Valve 2
C0004 is an OBD-II diagnostic trouble code meaning: TCS Control Channel B Valve 2. Common causes: tcs solenoid valve malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- The TCS/ESP indicator on the dashboard lights up
- Reduced effectiveness of the traction control system
- Possible problems with braking on slippery surfaces
Causes
- TCS solenoid valve malfunction
- Open or short circuit in wiring harness
- Problems with the TCS control unit
- Contact corrosion
How to Fix
- Check the integrity of the wiring harness to the valve
- Check valve resistance
- Check power and ground at valve connector
- If necessary, replace the faulty valve
Related codes
Error C0004 by Vehicle Brand
FAQ
What does the C0004 code mean?
C0004 is an OBD-II diagnostic trouble code that indicates: TCS Control Channel B Valve 2
What causes a C0004 error code?
The most common causes of C0004 include: TCS solenoid valve malfunction; Open or short circuit in wiring harness; Problems with the TCS control unit; Contact corrosion.
How do I fix a C0004 diagnostic trouble code?
To fix C0004: Check the integrity of the wiring harness to the valve. Check valve resistance. Check power and ground at valve connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0004?
Limited driving only, diagnose soon
How much does it cost to fix C0004?
The estimated repair cost for C0004 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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