P2E5ACylinder 2 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
- P2E5A says cylinder 2 is the one losing combustion while the engine is supplied with alternative fuel; P0302 is its petrol twin. No manufacturer documents this code publicly. On inline engines cylinder 2 follows cylinder 1; on V engines it is either the foremost cylinder on the other bank (GM, Chrysler) or the second one of the first bank (Ford, Audi). The gas injector is the typical gas-specific suspect: compressor oil carried in CNG condenses after the pressure regulator, reaches the injectors unevenly and can gum single valves or make them close erratically, as GM and Siemens patents describe. Landi Renzo's service manual for its 6.0-litre CNG conversion asks for misfire codes to check the injector plug, the nozzle seated in its port, the drive signal and injector wiring not crossed between cylinders.
- What you may notice
- Uneven running on gas, normal on petrol
- Higher gas consumption and loss of power
- Check engine light
- Likely causes
- LikelyGas injector on cylinder 2 gummed or sluggish from compressor oil in the gas
- PossibleInjector harness of the conversion routed crosswise, so cylinder 2 receives another cylinder's pulse
- PossibleInjection nozzle of cylinder 2 not properly seated in the manifold port
- PossibleCoil or plug on cylinder 2 too weak for gas operation
- 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 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.