P05BARestraint Deployment Signal Circuit High
- Generic OBD-II code · Powertrain
- How the car detects it
- After a crash the restraint control module tells the engine module that airbags or belt tensioners have fired; the engine module then cuts the fuel pump (Ford: until the ignition is cycled) and possibly the engine. Depending on the maker the message travels over CAN and/or a dedicated wire with a defined level or voltage drop. P05BA means the signal line stays above its valid range – a short to battery or ignition voltage, or with a pull-up in the engine module an open circuit. The fuel cut-off may then not work via this line. No manufacturer document available to us uses this code; it is a safety function, not an emission-relevant monitor, so usually without warning lamp.
- What you may notice
- Code stored
- Vehicle drives normally
- No check engine light
- Likely causes
- LikelySignal wire shorted to battery or ignition voltage
- PossibleOpen circuit with pull-up in the engine module
- PossibleRetrofitted loads or harness damage after accident repair
- RareRestraint or engine module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.