P22F1Cylinder 7 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
- A general circuit or open-wire code for the gas injector of cylinder 7, which only exists on V8 and larger engines. No manufacturer documents this code publicly. Ford and the Altech-Eco/TransEco CNG system for Ford V8 and V10 trucks report an open circuit at this valve under the Low code P22F2 instead, which CARB allows: for output circuit faults a maker need not store separate codes for open, shorted low and shorted high. A manufacturer using P22F1 would set it when the driver sees no load current from the cylinder 7 valve, typically a severed wire, unplugged connector or burnt coil. In gas mode the cylinder gets no fuel and misfires; bi-fuel engines normally revert to gasoline.
- What you may notice
- Misfire on cylinder 7 in gas mode
- Fallback to gasoline on bi-fuel vehicles
- Check engine light on
- Likely causes
- LikelyPlug of the cylinder 7 gas injector loose or left off after service
- PossibleBroken control or supply wire in the gas harness
- PossibleGas injector coil open internally
- 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.