OBD-II code · Powertrain (generic, extended)
P254F Engine Hood Switch Circuit
General electrical fault on the engine hood (bonnet) switch circuit. The hood switch tells the body controller and (on hybrids) the high-voltage system that the hood is open — used for security, alarm and HV-safety interlock. With the input invalid, alarm logic and HV interlock fall back to a safe state.
Is it safe to drive with P254F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen or shorted hood-switch wire
- PossibleAged switch with corroded contacts
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.2–1 h
- Emissions test
- Usually unaffected
- Parts involved
- Hood Switch, Wiring Harness
Related codes
- P254CPTO Speed Selector Sensor/Switch 1 Circuit Low
- P254DPTO Speed Selector Sensor/Switch 1 Circuit High
- P254EPTO Speed Selector Sensor/Switch 1 Circuit Intermittent/Erratic
- P2550Torque Management Request Input Signal B Low
- P2551Torque Management Request Input Signal B High
- P2552Throttle/Fuel Inhibit A Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.