What does code P0309 mean?
Misfire detected in cylinder 9
OBD-II Code
P0309 — Cylinder 9 Misfire Detected
Misfire detected in cylinder 9
Common symptoms
- Low power
- intense vibration
Possible causes
- Weak injector
- worn ignition coil
- bad spark plug
- poor compression
Initial recommendation
Inspect ignition system, injector and compression.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0309 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more codes