P22F7Cylinder 8 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
- P22F7 means the drive line of the cylinder 8 gas injector cannot be pulled down and stays near supply voltage. Ford lists it with MIL in the 2014 code list; in the conversion data from Altech-Eco/TransEco the cause given is a short to power, keeps the MIL off on dedicated CNG engines and marks the fault as not detectable by gas module version 1.4. Many output stages shut themselves off under such a short to protect the driver, so the valve stays closed and cylinder 8 runs without gas. A bi-fuel truck usually leaves gas mode and drives on gasoline; a dedicated CNG engine keeps misfiring. Check for a pinched wire touching a supply line before replacing the valve or module.
- What you may notice
- Cylinder 8 lean misfire in gas mode
- Check engine light on (bi-fuel versions)
- Vehicle stays on gasoline
- Likely causes
- LikelyCylinder 8 control wire pinched against a supply line
- PossibleSupply and control pins swapped in the gas harness
- RareDamaged output stage in the control module
- 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.