P2E5ECylinder 6 Alternative Fuel Misfire Detected
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2E5E names cylinder 6 as the misfiring one while the engine runs on alternative fuel; P0306 is its petrol twin. No manufacturer documents the code openly. On inline sixes cylinder 6 is the rearmost. With liquid propane injection, fuel turning to vapour in the rail is a known gas-specific cause: Roush CleanTech's diagnostic manual names running in the vapour region as a reason for P03xx misfire, a Ford patent notes that propane left in a hot rail boils off after shutdown and expands about 250-fold, and an Agility patent describes vapour forming when pressure sags along a rail feeding its injectors in series, so too little fuel is metered. Note whether misfire follows hot restarts or a low tank. A Texas training manual on propane conversions recommends the scan tool's cylinder balance test to confirm the cylinder.
- What you may notice
- Misfire or rough running shortly after a hot restart
- Long cranking time when the engine is warm
- Check engine light
- Likely causes
- LikelyGas or liquid-propane injector on cylinder 6 sticking or leaking
- PossiblePropane vapour in the liquid-injection rail (hot restart, low rail or tank pressure)
- PossiblePlug or coil on cylinder 6 failing under gas
- RareLow tank pressure in cold weather or nearly empty tank
- 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: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.