P22E7Cylinder 4 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
- P22E7 says the control circuit of the cylinder 4 gas injector reads high. TransEco Energy's fault table blames a short to power and lights the MIL for bi-fuel use; Ford's 2014 code list also marks P22E7 as a MIL code. The injector then cannot open and cylinder 4 misfires lean whenever gas is selected. Timing matters for diagnosis: GM's 2015 bi-fuel Impala starts on gasoline below about -20 °C and only moves to CNG once coolant reaches 50 °C, so on such cars the fault may appear only after warm-up. Check the wire for contact with a live feed and measure the injector coil for internal shorts. P22E6 is the low side; P0271 is the corresponding code for the gasoline injector of cylinder 4.
- What you may notice
- Malfunction indicator lamp on
- Cylinder 4 misfire only after the switch to gas
- Reduced power in gas mode
- Likely causes
- LikelyCylinder 4 control wire in contact with a 12 V circuit
- PossibleCylinder 4 injector coil with internal short
- RareOutput stage of the controlling module defective
- 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.