P2E5C
Cylinder 4 Alternative Fuel Misfire Detected
Misfire detected on cylinder 4 during alternative fuel operation. Specific to bi-fuel CNG/LPG operation.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on or flashing
- Rough idle and uneven running
- Power loss, hesitation under acceleration
- Increased fuel consumption
- Possible smell of unburned fuel from exhaust
Common causes
Ordered by how often each turns out to be the cause.
- Injector clogged or weakCommon
- Fuel quality off-specPossible
Parts involved
- Alt Fuel Injector Cyl 4
- Ignition Coil Cyl 4
P2E5C is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.