BMW DTC C0004 – TCS Control Channel ‘B’ Valve 2
DTC C0004 meaning on BMW
DTC C0004 on a BMW refers to an issue with the TCS (Traction Control System) Control Channel ‘B’ Valve 2. This fault code indicates a problem with the valve 2 in the TCS control channel ‘B’, which is responsible for regulating the traction control system in the vehicle.
BMW DTC C0004 symptoms
Symptoms of DTC C0004 on a BMW may include:
- ABS (Anti-lock Braking System) warning light illuminated on the dashboard
- Traction control system not functioning properly
- Loss of traction control during acceleration or braking
BMW DTC C0004 causes
Common causes of DTC C0004 on a BMW include:
- Faulty TCS Control Channel ‘B’ Valve 2
- Wiring or connection issues in the TCS system
- Corrosion or damage to the TCS control module
BMW DTC C0004 seriousness
DTC C0004 fault code should be addressed promptly as it can affect the proper functioning of the traction control system in the vehicle. Driving with a malfunctioning traction control system can compromise vehicle stability and safety, especially in adverse road conditions.
How to diagnose DTC C0004 on BMW
To diagnose DTC C0004 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the TCS Control Channel ‘B’ Valve 2 for any visible damage or signs of malfunction
- Check the wiring and connections in the TCS system for any issues
How to fix DTC C0004 on BMW
To fix DTC C0004 on a BMW, the following steps may be taken:
- Replace the faulty TCS Control Channel ‘B’ Valve 2
- Repair any damaged wiring or connections in the TCS system
- Clean or replace the TCS control module if necessary
How to erase DTC C0004 on BMW
To erase DTC C0004 fault code on a BMW, a mechanic can use a diagnostic scanner to clear the code from the vehicle’s system. Once the underlying issue has been addressed and fixed, the fault code can be cleared to reset the system and ensure proper operation of the traction control system.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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