P0300 on Volkswagen — Random/multiple cylinder misfire
VOLKSWAGEN
Reviewed2 sources
2 sources
- Official data (NHTSA)official_feed
- Editorial sourceeditorial
What P0300 means
Avoid long trips
P0300 means the engine control module detected misfires across multiple cylinders without a single consistent pattern. On VW TSI direct-injection engines this is frequently linked to carbon buildup on the intake valves or worn ignition coils.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Worn spark plugs
- Vacuum leak (intake air leak)
- Worn or failing ignition coils
- Intake valve carbon buildup (direct injection)
- Failed ignition coil
Symptoms
- Check-engine light flashing under hard acceleration
- Misfire under load
- Engine shaking at idle
- Повышенный расход топлива
- Random misfire codes across multiple cylinders
- Fluctuating idle RPM
- Rough idle vibration
- Rough idle
- Loss of power
- Hesitation on acceleration
- 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
Frequently asked questions
The check-engine light is flashing — is that different from staying on?
Yes — a FLASHING light means an active misfire severe enough to damage the catalytic converter. Stop driving and have it towed or driven minimally to a shop immediately.