P0307

Symptoms

• Engine vibration
• Power reduction
• Increased fuel consumption
• Unstable idle
• Check Engine Light Is On

Causes

• Spark plug fault
• Ignition coil problem
• Clogged fuel injectors
• Low cylinder compression
• Wiring harness damage
• Crankshaft position sensor malfunction
• Problems with the fuel pump
• Contamination of the air flow sensor
• Vacuum leak
• ECU malfunction

How to Fix

1. Read stored fault codes
2. Check the condition of the spark plug in cylinder 7
3. Check for sparking
4. Check the condition of the ignition coil
5. Check compression in cylinder
6. Check fuel injectors
7. Check the intake manifold for leaks
8. Inspect the ignition system wiring harness
9. If necessary, replace faulty components
10. Erase errors and check engine operation

Related codes

Error P0307 by Vehicle Brand