Engine Error
P0306
Cylinder 6 Misfire Detected
Severity
High
Symptoms
Rough idle, poor acceleration, noticeable vibration
Common Causes
- Defective spark plug or wire
- Faulty coil on plug
- Intake manifold gasket leak
- Bad fuel injector
How to Fix
- 1 Replace cylinder 6 spark plug and boot
- 2 Test and replace ignition coil
- 3 Spray carburetor cleaner to check for intake leaks
- 4 Test injector resistance
Estimated Repair Cost
USD
$50
–
$700
Coil replacement: $150 - $300; Intake gasket: $300 - $700