C004EBrake System Pressure Control Valve Actuator Stuck
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- Set when the actuator of a brake system pressure control valve does not move as commanded and appears mechanically stuck. In electronically controlled brake and stability systems a pressure control valve regulates how much hydraulic pressure reaches the wheel circuits; the module commands the valve and checks the resulting pressure against the demand. When the pressure does not change although the valve was commanded, or the valve position feedback does not follow, the module concludes the actuator is stuck by contamination, corrosion or a mechanical fault. Pressure modulation for ABS, traction and stability is lost on the affected circuit and the brake or ABS warning lamp is set while base braking remains.
- What you may notice
- ABS, traction and stability control disabled
- Abnormal brake behaviour on one circuit
- ABS or brake warning lamp on
- Likely causes
- LikelyValve actuator stuck by contamination or wear
- PossibleCorrosion or debris in the valve bore
- RareValve driver or wiring fault
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €300 – €2,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.