P22F5Cylinder 8 Alternative Fuel Injector Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Open-circuit code for the gas injector of cylinder 8. No manufacturer documents this code publicly. In the two manufacturer-side lists found, the Ford overview from 2014 and TransEco's sheet for gas-converted Ford V8 and V10 trucks, cylinder 8 has only P22F6 and P22F7, and the TransEco table explicitly assigns an open line to P22F6. CARB permits this shortcut for output circuits. Where P22F5 is used, the module would flag it when no current flows through the cylinder 8 valve after it is commanded on. Typical findings are a pulled or corroded plug at the rear of the bank, a wire broken by engine movement or an internally open coil. That cylinder then gets no gas, while gasoline mode stays usable on bi-fuel trucks.
- What you may notice
- Cylinder 8 misfire whenever the engine runs on gas
- Change to gasoline on bi-fuel vehicles
- Check engine light on
- Likely causes
- LikelyCylinder 8 injector plug corroded or disconnected
- PossibleWire fatigued at a flex point of the gas harness
- PossibleCoil of the cylinder 8 gas valve open
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.