P0302 — Cylinder 2 Misfire Detected

P0302 means cylinder 2 is misfiring. Diagnosis is identical to P0301 — start by swapping the cylinder 2 spark plug and coil with another cylinder.

Cost range: $30–$600. Severity: high. Safe to drive? No, especially if the check engine light is flashing.

Most common causes of P0302

1. Bad spark plug on cyl 2 — Easiest fix. ($10–$30)
2. Failing ignition coil on cyl 2 — Swap-test with another cylinder. ($40–$200)
3. Faulty injector on cyl 2 — Check resistance and spray pattern. ($200–$600)

Symptoms drivers report with P0302

• Vibration at idle
• Power loss
• CEL