OBD-II code guide
P0302 Cylinder 2 Misfire Detected
P0302 means cylinder 2 is misfiring often enough for the computer to flag a fault.
What it means
Cylinder 2 has incomplete combustion or no combustion during some events.
Common symptoms
- Engine shake
- Rough idle
- Hesitation
- Flashing check engine light
- Poor fuel economy
Likely causes
- Ignition coil fault
- Worn spark plug
- Injector issue
- Low compression
- Wiring or connector issue
First checks
- Verify whether the misfire follows a swapped coil if you are qualified to test.
- Inspect plug condition.
- Check for related lean codes.
- Avoid clearing freeze-frame data before recording it.