P0301High severity

Cylinder 1 Misfire Detected

The engine is misfiring on cylinder 1, causing rough running and power loss.

Safe to Drive?
No

Have this diagnosed before driving further

Informational only. Consult a qualified mechanic.

Estimated Repair Cost
$75 - $800
Common Causes
  • Worn spark plug
  • Faulty ignition coil
  • Bad fuel injector
  • Low compression
  • Vacuum leak
Recommended Action

Replace spark plug and ignition coil on cylinder 1. If it persists, check compression and injector.

What does P0301 mean?

The P0301 OBD-II diagnostic trouble code (DTC) indicates: cylinder 1 misfire detected. This is a high-severity powertrain code that your vehicle's onboard diagnostics system triggers when the engine is misfiring on cylinder 1, causing rough running and power loss. If your check engine light is on with this code, you should have the vehicle inspected immediately before driving further.

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