Engine and gearbox (P)
P0302: Cylinder 2 misfire detected
The engine control unit has detected a misfire in cylinder 2. This can lead to poor engine performance and increased emissions.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Rough idling
- Reduced power
- Increased fuel consumption
- Engine hesitation
- Check engine light on
Common causes
- Faulty spark plug
- Defective ignition coil
- Clogged or faulty injector
- Low cylinder compression
How to check it yourself
- Swap spark plug with another cylinder
- Swap ignition coil with another cylinder
- Inspect and clean injector
- Perform a compression test
Can I keep driving?
The car can be driven, but prolonged driving may cause further damage.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer