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P0301 Diagnostic Trouble Code Discussion for December 2019

Cylinder 1 Misfire Detected

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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2012 Subaru Impreza WRX 2.5L Misfire VIN: JF1GV7F6XC
... idles rough they installed new oem coils and plugs. What we noticed is off idle it seems to drive fine and will not set any codes. If you let it idle it will set p0301/p0302/p0303/p0304.The adaptives are acting strange. ...
December 10, 2019
2010 GMC Acadia SLT 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKLVNED1A
P0301: Cyl 1 miss. I bought this car with this problem. Runs great on start up, until warm. Then at idle only, you can feel a slight rough idle. Eventually it sets 1-3-5 misfire codes simultaniously. If it is really cold outside (below 0F) it will not run rough, even after 5...
December 19, 2019