P0306
Cylinder 6 Misfire Detected
P0306 is an OBD-II diagnostic trouble code meaning: Cylinder 6 Misfire Detected. Common causes: spark plug fault, ignition coil problem. Estimated repair cost: $28–167.
Symptoms
- Engine troubles
- Power Loss
- Increased fuel consumption
- Unstable idle
- Popping sounds in the exhaust system
Causes
- Spark plug fault
- Ignition coil problem
- Clogged fuel injector
- Low cylinder compression
- Malfunction of the camshaft/crankshaft position sensor
- Wiring Harness Problems
- Vacuum leak
- VVT system malfunction
How to Fix
- Check the condition of the spark plug in cylinder 6
- Check the ignition coil (swap with another cylinder to check)
- Check compression in cylinder 6
- Diagnose the fuel injector
- Check the tightness of the intake tract
- Check the condition of the ignition system wiring harness
- Read engine operating parameters via OBD-II scanner
Related codes
Error P0306 by Vehicle Brand
FAQ
What does the P0306 code mean?
P0306 is an OBD-II diagnostic trouble code that indicates: Cylinder 6 Misfire Detected
What causes a P0306 error code?
The most common causes of P0306 include: Spark plug fault; Ignition coil problem; Clogged fuel injector; Low cylinder compression.
How do I fix a P0306 diagnostic trouble code?
To fix P0306: Check the condition of the spark plug in cylinder 6. Check the ignition coil (swap with another cylinder to check). Check compression in cylinder 6. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0306?
Limited driving only, diagnose soon
How much does it cost to fix P0306?
The estimated repair cost for P0306 is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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