How to Fix a P0301 Code: Cylinder 1 Misfire Detected
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An engine misfire is when a cylinder has an incomplete combustion ignition or the absence of combustion in a cylinder.
Each cylinder needs the correct airfuel mixture and spark to complete combustion.
If the vehicle only has a P0301 Code, then the components on that cylinder should be tested.
A cylinder's individual components would be the coil, injector, spark plug, and spark plug wire.
If there are other engine codes, then there may be other issues.
For example, multiple misfire codes (P0300) can be caused by low fuel pressure, bad sensors, vacuum leak, and more.

Possible Causes of a P0301 Code
Spark Plug
Spark Plug Wire
Coil
Fuel Injector

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