P2C76Active Grille Air Shutter D Stuck On
- 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
- Shutter D would be the fourth individually driven grille flap. P2C76 reports that this flap remains open when the engine module wants it shut. Not a single published document uses a shutter D: GM and Ford stop at A and B, and Hyundai's 2026 Palisade reaches C. The meaning therefore follows the stuck-open codes of the other flaps, P05A0 for A and P2C73 for C. Toyota's 2016–17 Prius illustrates the pattern on shutter A: debris lodged in the louvres kept them open, set P05A0 subtype 72 with the MIL and a dashboard message, and the cure was cleaning. An open flap leaves full cooling air, so overheating is unlikely; instead drag rises, the engine and catalyst warm up more slowly in winter, and fuel use creeps up.
- What you may notice
- Engine warning lamp and possibly a grille shutter message
- Longer warm-up and weaker heater output in winter
- Marginally higher fuel use
- Likely causes
- LikelyLeaves, stones or other debris wedged in the louvres of shutter D
- PossibleActuator of shutter D failed while the flap was open
- RareFlap frame or linkage damaged by a front impact
- 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: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.