P0301Severity: High
P0301 – Cylinder 1 Misfire
A misfire was detected in cylinder number 1.
What it means
The ECU detects a loss of ignition/combustion in cylinder 1. Usually that cylinder's spark plug, coil or injector is at fault.
Symptoms
- Vibration
- Loss of power
- Check-engine light
- Rough idle
Common causes
- Faulty spark plug (cyl 1)
- Faulty ignition coil
- Clogged/faulty injector
- Compression loss
- Vacuum leak
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Frequently asked questions
What does trouble code P0301 mean?
P0301 – Cylinder 1 Misfire. The ECU detects a loss of ignition/combustion in cylinder 1. Usually that cylinder's spark plug, coil or injector is at fault.
Can I drive with a P0301 code?
This code is high severity. Driving for long can damage the engine; have it checked as soon as possible.