P05C0Active Grille Air Shutter Module A Over Temperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Shutters cut drag and speed warm-up when closed and open for cooling; CARB names them as an off-cycle CO2 technology and treats the actuator as an output component. Smart actuators report over LIN (loss of communication: U0285); a fault usually costs fuel and warm-up time, a closed shutter can make the engine run hot under load. P05C0 means the smart actuator of shutter A (the upper one) measures its control chip above 140 °C for 10 s and switches its driver off for protection. Documented only for Ford's 3.0 L diesel. Usual causes are continuous motor load from a stiff or blocked shutter or a shorted coil, or an internal fault; it may work again after cooling.
- What you may notice
- Shutter inoperative at times
- Check engine light possible
- Possibly also a performance code
- Likely causes
- LikelyActuator faulty internally (driver overheating)
- PossibleShutter stiff or blocked (ice, dirt, bent louvres) causing continuous current
- RareHigh heat load at the mounting point (radiator, traffic, towing)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €100 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.