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P0301 Diagnostic and Fix for Chevrolet Cavalier - How to Resolve Misfire Code

Model: Chevy Cavalier Fault Code: P0301 Posted: 2008-08-08 22:20

I urgently need help! My Chevrolet Cavalier is due for smog inspection, but I can't get it passed until the check engine light is turned off. The diagnostic code shows P0301, indicating a misfire in cylinder 1. I've already replaced the spark plugs and ignition wires, but the code persists. What other troubleshooting steps should I take? Any advice would be greatly appreciated.

Related fault codes
P0301
Comments (2)
Anonymous 2008-08-09 17:53

Cylinder 1 is misfiring. To diagnose further, check if the fuel injector is pulsing and verify that the spark coil is operating correctly.

Anonymous 2008-08-09 19:27

It was actually the ignition coil—replacing it resolved the issue. Thanks for the helpful tip!