P2E5DCylinder 5 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
- P2E5D assigns gas-mode misfire to cylinder 5, which exists only on engines with five or more cylinders, such as the 3.6-litre V6 in GM's 2015 Impala bi-fuel, V8 trucks or inline-six gas engines in buses. P0305 is the petrol equivalent. No manufacturer publishes P2E5D. With bank-wise numbering (Ford, Audi) cylinder 5 opens the second bank; with crank-order numbering (GM, Chrysler) it lies on the odd-numbered bank. In the Impala, GM placed an oil separator with filter in the low-pressure line before the CNG rail and set a 36,000-mile change interval; an overdue element lets oil reach the injectors. For its heavy natural-gas engines, Cummins names worn, damaged or mishandled spark plugs as a leading cause of unplanned misfire downtime. CARB §1971.1 covers such heavy-duty gas engines.
- What you may notice
- Vibration and power loss on gas
- Bi-fuel vehicle drops back to petrol
- Check engine light
- Likely causes
- LikelySpark plug on cylinder 5 past its change interval or damaged when handled
- PossibleLow-pressure oil separator/filter not serviced, oil reaches the gas injector of cylinder 5
- PossibleGas injector on cylinder 5 faulty
- RareCracked coil extension or boot on cylinder 5 (heavy-duty gas engines)
- 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 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.