P22EDCylinder 6 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
- P22ED marks an open control circuit at the cylinder 6 gas injector, the last injector on six-cylinder engines like the 3.6-litre V6 of GM's 2015 bi-fuel Impala, where the ECM drives the CNG injectors directly. Current is missing when the injector should open, so the module records the break. No maker documents P22ED openly: the TransEco AFCM table and Ford's 2014 code list give cylinder 6 only P22EE and P22EF, and TransEco reports an interrupted line as Low, so the same fault may appear as P22EE on such systems. The Impala's ECM changes to the other fuel when one system cannot deliver, so the driver mostly sees gasoline operation and the MIL. Check coil resistance and connector first. P0206 is the gasoline counterpart.
- What you may notice
- Malfunction indicator lamp on
- Vehicle runs on gasoline although gas is selected
- Cylinder 6 misfire on dedicated gas engines
- Likely causes
- LikelyOpen coil in the cylinder 6 gas injector
- PossibleLoose or corroded connector at cylinder 6
- RareBroken wire between control module and cylinder 6 injector
- 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.