P0301 on Volkswagen — Cylinder 1 misfire
VOLKSWAGEN
2 sources
- Official data (NHTSA)official_feed
- Editorial sourceeditorial
What P0301 means
P0301 means the engine control module detected a misfire isolated to cylinder 1. Unlike P0300 (random/multiple), a single-cylinder code usually points at that cylinder's ignition or fuel component. On VW TSI engines it is most often a failed ignition coil or spark plug on cylinder 1.
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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
| Estimated repair cost range | USD |
|---|---|
| Low | $180.00 |
| Typical | $280.00 |
| High | $450.00 |
Editorial estimate — no owner reports yet
Frequently asked questions
Is a single-cylinder misfire (P0301) less serious than P0300?
Not necessarily — any sustained misfire dumps unburned fuel into the exhaust and can overheat the catalytic converter. A single-cylinder code is easier to diagnose (you know which cylinder), but a flashing check-engine light means active damage-level misfire regardless of the code.