Engine Error
P0307
Cylinder 7 Misfire Detected
Severity
High
Symptoms
Flashing MIL, hesitation under load, poor gas mileage
Common Causes
- Worn spark plug
- Ignition coil failure
- Vacuum leak near cylinder 7
- Internal engine damage
How to Fix
- 1 Change spark plug
- 2 Replace ignition coil
- 3 Inspect vacuum hoses
- 4 Perform leak down test
Estimated Repair Cost
USD
$50
–
$1500
Plug/Coil: $100 - $300; Internal repair: $1,000 - $1,500+