P22E6Cylinder 4 Alternative Fuel Injector Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P22E6 reports a low signal on the cylinder 4 gas injector control wire. TransEco Energy's AFCM table gives short to ground or open as the cause and turns the MIL on in bi-fuel installations, keeping the same failure response as for gasoline; Ford's 2014 code list carries P22E6 with the MIL as well. On Ford's 2003 bi-fuel CNG system the control module would only start the engine on gas once rail pressure reached about 517 kPa, so a failed gas start alone does not prove an injector fault: check for this code first. A grounded line can hold cylinder 4 permanently open and flood it; an interrupted one leaves it dry. P22E7 is the high side, P22E5 the plain open circuit, and P0270 the gasoline injector code.
- What you may notice
- Malfunction indicator lamp on
- Cylinder 4 runs rich or cuts out on gas
- Engine stays on or returns to gasoline
- Likely causes
- LikelyCylinder 4 control wire grounded through damaged insulation
- PossibleSeparated terminal or broken wire in the cylinder 4 circuit
- RareDamaged driver output in the gas 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: €50 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.