P22DACylinder 1 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
- P22DA means the cylinder 1 gas injector control wire reads too low. TransEco Energy's DTC list for its CNG control module (AFCM v1.4) blames either a grounded wire or an open line, turns on the MIL in bi-fuel installations and reacts the same way it would to the matching gasoline injector fault. Ford's 2014 OBD code list carries P22DA as a MIL code as well. With a low-side driver, a control wire touching ground can keep the injector energized whenever its supply is live, so cylinder 1 may get gas without pause and run very rich; an interrupted wire leaves it without gas. P22DB covers the high side and P22D9 the plain open circuit. The gasoline injector of the same cylinder reports through P0261 instead.
- What you may notice
- Malfunction indicator lamp on
- Very rough running on cylinder 1 in gas mode, possibly rich misfire
- Gas system switches back to gasoline
- Likely causes
- LikelyControl wire of the cylinder 1 gas injector chafed through to ground
- PossibleInterrupted control wire or connector (logged as Low by some modules)
- RareWater or corrosion in the injector connector
- RareFaulty output stage 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.