P0301 — Cylinder 1 Misfire Detected
Reviewed1 source
1 source
- Official data (NHTSA)official_feed
What P0301 means
Avoid long trips
The ECU detects misfires specifically in cylinder 1 — narrows diagnosis compared to the generic P0300.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Faulty or clogged fuel injector (cylinder 1)
- Cylinder 1 spark plug or coil
- Worn or failing ignition coils
- Worn or fouled spark plug
Symptoms
- Check-engine light flashing under hard acceleration
- Engine shaking at idle
- Stumble or hesitation under load
- Повышенный расход топлива
- Rough idle
- Loss of power
- Engine misfiring
$180.00 – $450.00
| Estimated repair cost range | USD |
|---|---|
| Low | $180.00 |
| Typical | $280.00 |
| High | $450.00 |
Editorial estimate — no owner reports yet