What does code P0304 mean?
Misfire detected in cylinder 4
OBD-II Code
P0304 — Cylinder 4 Misfire Detected
Misfire detected in cylinder 4
Common symptoms
- Vibration
- irregular noise
- reduced power
Possible causes
- Bad spark plug
- faulty ignition coil
- stuck injector
Initial recommendation
Replace spark plug or ignition coil and inspect injector.
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 P0304 with your vehicle's actual symptoms for more complete diagnostic guidance.
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