P0308
Cylinder 8 Misfire Detected
P0308 is an OBD-II diagnostic trouble code meaning: Cylinder 8 Misfire Detected. Common causes: spark plug fault, problems with the ignition coil. Estimated repair cost: $56–167.
Symptoms
- The engine is rough or unstable
- Reduced power and deterioration in dynamics
- Increased fuel consumption
- Jerking during acceleration
- Check Engine Light Is On
Causes
- Spark plug fault
- Problems with the ignition coil
- Dirty or faulty fuel injectors
- Low cylinder compression
- Problems with the ignition system
- Malfunction of sensors (mass air flow sensor, knock sensor, etc.)
- Vacuum leak
How to Fix
- Check the condition of the spark plug in cylinder 8
- Test the ignition coil
- Check fuel injector
- Measure the compression in the cylinder
- Check wiring harness and connections
- Check the operation of the sensors (mass air flow sensor, knock sensor, etc.)
- Check the tightness of the intake tract
Related codes
Error P0308 by Vehicle Brand
FAQ
What does the P0308 code mean?
P0308 is an OBD-II diagnostic trouble code that indicates: Cylinder 8 Misfire Detected
What causes a P0308 error code?
The most common causes of P0308 include: Spark plug fault; Problems with the ignition coil; Dirty or faulty fuel injectors; Low cylinder compression.
How do I fix a P0308 diagnostic trouble code?
To fix P0308: Check the condition of the spark plug in cylinder 8. Test the ignition coil. Check fuel injector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0308?
Limited driving only, diagnose soon
How much does it cost to fix P0308?
The estimated repair cost for P0308 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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