P25A3Engine Hood Open
- Generic OBD-II code · Powertrain
- How the car detects it
- P25A3 is a state code, not a wiring fault: the hood is reported open at a moment when the control strategy expects it closed, for example while an automatic restart, a remote start or a hybrid engine pull-up is pending. No manufacturer documents P25A3 publicly. A Stellantis STAR case on hood switch 2 explains the background: the PCM reads that switch directly, cross-checks it against the latch switch state sent by the body module over CAN, and if either reads open it disables stop-start until the trip ends and blocks remote start. CARB's OBD rule cites an override of start-stop disablement as an emissions-neutral diagnostic. Circuit faults of the switch itself are P254F and P257D–P257F. A hood not fully latched or a misadjusted switch striker is the usual reason.
- What you may notice
- Hood open warning in the cluster
- Auto stop-start and remote start locked out
- Engine keeps running at standstill instead of stopping
- Likely causes
- LikelyHood only on the safety catch, not fully latched
- PossibleHood switch or striker misadjusted after body work
- PossibleLatch-integrated switch sticking in the open position
- Repair
- Easy · Often possible to do yourself.Typical cost: €0 – €200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.