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P0301: Cylinder 1 Misfire Detected
The PCM detected repeated combustion misses on cylinder 1.
Common causes
- Cylinder 1 coil or plug
- Injector issue
- Vacuum leak near cylinder 1
- Low compression
This free page explains the code. A Shop Brief adapts the next steps to your year, make, model, and full code stack.
Related codes:
P0300P0302P0303 Pricing Sample brief