P22EFCylinder 6 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
- The counterpart to P22EE: the drive line of the cylinder 6 gas injector stays near battery voltage even when the output stage should pull it down. For Ford pickups and vans converted with the Altech-Eco/TransEco CNG kit, the installer sheet gives as cause is a short to power; the same MIL rule applies (on for bi-fuel, off for dedicated CNG), and the column for the gas module version 1.4 marks this fault as not detected there, so on such units only the PCM catches it. Ford carries P22EF with MIL in its 2014 code list. Because the valve can no longer be opened, cylinder 6 runs lean or misfires while on gas, and a bi-fuel engine typically falls back to gasoline. Open wires are not reported here but under the Low code.
- What you may notice
- Check engine light on (bi-fuel versions)
- Lean misfire on cylinder 6 in gas mode
- Automatic change to gasoline operation
- Likely causes
- LikelyControl wire of the cylinder 6 gas injector touching a battery-voltage feed
- PossibleGas harness spliced or pinned incorrectly during the conversion
- RareMoisture bridging supply and control pins in the injector plug
- RareOutput stage in the control module no longer switches
- 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.