P25A3
Engine Hood Open
After plausibility checks the body controller has concluded that the engine hood is genuinely open while the vehicle is operating. Used to suspend HV operation on hybrids/EVs (HV interlock), block remote engine start, and trigger the alarm if armed.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Hood not properly latchedCommon
- Failed hood latch sensorPossible
Parts involved
- Hood Latch
- Hood Switch
P25A3 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.