P0301 Misfire @ #1
Spark plugs are the most common cause there. Could be any number of things that cause a miss though, bad injector, injector not getting power or ground etc. Did something else happen when this code started coming up or did it just start happening?
Here is the FULL list of problems associated with a misfire code
Faulty spark plug
Clogged or faulty fuel injector
Faulty ignition coil
Fuel injector harness is open or shorted
Fuel injector circuit poor electrical connection
Ignition coil harness is open or shorted Ignition coil circuit poor electrical connection Insufficient cylinder compression Incorrect fuel pressure Intake air leak
Good luck on the repair! Anything past a coil I would take it in and call it damage control.
Faulty spark plug
Clogged or faulty fuel injector
Faulty ignition coil
Fuel injector harness is open or shorted
Fuel injector circuit poor electrical connection
Ignition coil harness is open or shorted Ignition coil circuit poor electrical connection Insufficient cylinder compression Incorrect fuel pressure Intake air leak
Good luck on the repair! Anything past a coil I would take it in and call it damage control.
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lowtempo
Engine & Drivetrain
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Jun 25, 2025 11:47 AM





