P22DBCylinder 1 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
- P22DB flags a control circuit of the cylinder 1 gas injector that stays too high. TransEco Energy's AFCM fault list traces it to a short to battery voltage, lights the MIL for bi-fuel use and applies the same fallback as for the gasoline injector fault; Ford's 2014 code list also marks P22DB for the MIL. When the line is held at supply voltage, the driver cannot pull it down, so the injector never opens and cylinder 1 receives no gas: a lean misfire on that cylinder in gas mode is the typical result, often together with P0301. Many output stages also shut off to protect themselves from the excessive current. A coil with shorted turns can look the same. P22DA is the low side, P0262 the code for the gasoline injector.
- What you may notice
- Malfunction indicator lamp on
- Lean misfire on cylinder 1 in gas mode, often with P0301
- Engine runs normally on gasoline
- Likely causes
- LikelyControl wire shorted to battery or injector supply voltage
- PossibleShorted turns in the cylinder 1 gas injector coil
- RareOutput stage of the gas control module damaged
- 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.