P22F3Cylinder 7 Alternative Fuel Injector Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Here the cylinder 7 gas valve drive line is held high, so the output stage cannot switch the valve on. Ford's 2014 list carries P22F3 with MIL; the Altech-Eco/TransEco table for its Ford V8 and V10 CNG systems names a short to power as cause, applies MIL only to bi-fuel trucks and notes that gas module version 1.4 cannot detect this fault itself. Compared with the Low code the picture is clearer: the valve stays shut and cylinder 7 receives no gas, giving a lean misfire on gas while gasoline operation is unaffected. On a dedicated CNG engine there is no second fuel, so the misfire persists until repaired. Under CARB rules such circuit checks run continuously.
- What you may notice
- Lean misfire on cylinder 7 in gas mode
- Check engine light on (bi-fuel versions)
- Gas operation dropped in favour of gasoline
- Likely causes
- LikelyCylinder 7 control wire shorted to a switched or battery feed
- PossibleWiring error at the splice between factory and gas harness
- RareOutput stage in the control module 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: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.