P2E5CCylinder 4 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
- P2E5C is stored when the misfire counter blames cylinder 4 while gas is being burned; in petrol mode the code would be P0304. No manufacturer documents P2E5C publicly, and Deutz's fault list for its eControls LPG, CNG and bi-fuel engines reports such events with the ordinary P0301 to P0304. On four-cylinder engines cylinder 4 is the last one in the block. Ignition is the main gas-related suspect: NGK points out that a gas/air charge needs a clearly higher firing voltage than petrol, which loads the coils and wears the plugs faster, and the US Department of Energy notes that natural gas reacts more sensitively to spark quality. A coil or plug that still works on petrol can therefore drop out on gas alone. Check plug type and gap for gas, coil and boot, then move the coil to another cylinder.
- What you may notice
- Misfire mainly under load or acceleration on gas
- Engine runs cleanly after switching to petrol
- Check engine light, flashing during heavy misfire
- Likely causes
- LikelySpark plug on cylinder 4 worn or unsuited for gas (gap too wide, wrong heat range)
- LikelyCoil or plug boot on cylinder 4 breaking down under the higher firing voltage
- PossibleGas injector on cylinder 4 sticking or delivering too little
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €40 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.