What does code P0301 mean?
The ECU detects repeated misfires in cylinder 1
OBD-II Code
P0301 — Cylinder 1 Misfire Detected
The ECU detects repeated misfires in cylinder 1
Common symptoms
- Hesitation
- power loss
- strong vibration
- fuel odor
Possible causes
- Worn spark plug
- damaged ignition coil
- dirty injector
- vacuum leak
- low compression
Initial recommendation
Inspect spark plug, ignition coil, injector and cylinder 1 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 P0301 with your vehicle's actual symptoms for more complete diagnostic guidance.
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