P05FEActive Grille Air Shutter C Performance/Stuck Off
- 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
- Active grille shutters close the air inlet when little cooling is needed, to reduce drag and speed up warm-up. P05FE is the performance check of a third shutter C – target and actual position do not match, as P059F does for shutter A and P05AE for shutter B. Only vehicles with three separately driven shutters could set it, and no manufacturer was found that uses a shutter C: GM and Ford use only A (upper) and B (lower). This description therefore follows A and B: control is suspended and the shutter stays where it is or opens; if it sticks closed, cooling air is missing under load. GM and Ford light the lamp for A and B after two trips. Ice and debris are frequent causes, and GM fixed false A/B codes in snow by software on the 2025 Equinox. Stuck on is P2C73.
- What you may notice
- Check engine light (depending on the maker)
- Higher coolant temperature under load or slower warm-up
- Slightly higher fuel consumption
- Often no noticeable symptoms
- Likely causes
- LikelyDebris or ice blocking the louvres
- PossibleLouvres unhooked or broken (impact)
- PossibleShutter C actuator faulty
- RareConnector, wiring or supply corroded
- RareSoftware false trigger in frost
- 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: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.