P2C7DTurbocharger Turbine Inlet Valve Motor Driver High Current
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2C7D is set when the output stage driving the turbine inlet valve motor carries more current than permitted. H-bridge chips such as NXP's MC33926 limit motor current and flag overcurrent to the controller, and a Korean patent on electric turbo actuators explains how a DC motor that cannot reach its target draws excess current and is switched off before it burns out. No manufacturer documents P2C7D publicly. The usual trigger is a valve jammed by soot or corrosion so the motor stalls; shorted motor windings and chafed leads touching each other or ground are next. The driver then shuts down, the valve stays where it is and boost control is restricted. A valve that is merely slow without excess current leads to P2C7B, an overheated driver to P2C7E.
- What you may notice
- Sudden loss of boost and power
- Check engine light, limp mode
- Code returns immediately after clearing when the valve is commanded
- Likely causes
- LikelyValve jammed by soot or corrosion, motor stalls
- PossibleShorted windings in the actuator motor
- PossibleMotor leads chafed and shorted to each other or to ground
- RareDefective H-bridge driver in the control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.