P22E9Cylinder 5 Alternative Fuel Injector Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P22E9 is the open-circuit code for the cylinder 5 gas injector and can only appear on engines with five or more cylinders, such as the V6 of GM's bi-fuel Impala or the 6.0-litre V8 of its bi-fuel Silverado and Sierra. The driver detects the break because current is missing when the injector is commanded on. No maker documents P22E9 publicly; TransEco's AFCM list and Ford's 2014 code list only use P22EA and P22EB for cylinder 5, and TransEco treats an open line as Low. On V engines the injector wiring of each bank often runs in its own harness branch, so check the cylinder 5 branch from the module to the injector. Bi-fuel vehicles fall back to gasoline; P0205 is the gasoline counterpart.
- What you may notice
- Malfunction indicator lamp on
- Engine returns to gasoline after switching to gas
- Cylinder 5 misfire if gas operation continues
- Likely causes
- LikelyOpen coil in the cylinder 5 gas injector
- PossibleLoose connector in the harness branch for this bank
- RareOpen driver output in the gas or injector 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: €40 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.