P0307
Cylinder 7 Misfire Detected
P0307 is an OBD-II diagnostic trouble code meaning: Cylinder 7 Misfire Detected. Common causes: spark plug fault, ignition coil problem. Estimated repair cost: $6–167.
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
- Read stored fault codes
- Check the condition of the spark plug in cylinder 7
- Check for sparking
- Check the condition of the ignition coil
- Check compression in cylinder
- Check fuel injectors
- Check the intake manifold for leaks
- Inspect the ignition system wiring harness
- If necessary, replace faulty components
- Erase errors and check engine operation
Related codes
Error P0307 by Vehicle Brand
FAQ
What does the P0307 code mean?
P0307 is an OBD-II diagnostic trouble code that indicates: Cylinder 7 Misfire Detected
What causes a P0307 error code?
The most common causes of P0307 include: Spark plug fault; Ignition coil problem; Clogged fuel injectors; Low cylinder compression.
How do I fix a P0307 diagnostic trouble code?
To fix P0307: Read stored fault codes. Check the condition of the spark plug in cylinder 7. Check for sparking. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0307?
Limited driving only, diagnose soon
How much does it cost to fix P0307?
The estimated repair cost for P0307 is $6–167. Actual cost depends on your vehicle, location, and labor rates.
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