P0307Severity: High
P0307 – Cylinder 7 Misfire
A misfire was detected in cylinder number 7.
What it means
The ECU detects a loss of combustion in cylinder 7. Seen on V8 engines; that cylinder's ignition and fuel components and its compression should be checked.
Symptoms
- Vibration
- Loss of power
- Check-engine light
- Rough idle
Common causes
- Faulty spark plug (cyl 7)
- Faulty ignition coil
- Clogged/faulty injector
- Compression loss
- Vacuum leak
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Frequently asked questions
What does trouble code P0307 mean?
P0307 – Cylinder 7 Misfire. The ECU detects a loss of combustion in cylinder 7. Seen on V8 engines; that cylinder's ignition and fuel components and its compression should be checked.
Can I drive with a P0307 code?
This code is high severity. Driving for long can damage the engine; have it checked as soon as possible.