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P0303 Diagnostic Trouble Code Discussion for November 2021

Cylinder 3 Misfire Detected

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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2011 Subaru Forester X 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: JF2SHABC3B
car came in cel on misfire codes cleared test drove drives good do not notice misfire fz frame shoes code sets around idle 600 to 800 rpm range sometimes only cly 4 other times all foue code sometimes will start fine other it will run rough vaccum will sta...
November 02, 2021
2011 Ram 1500 Laramie 5.7L Misfire VIN: 1D7RB1GT8B
P0303: Misfire 3. After repairs, it run smooth for 9 miles and than misfire very bad. Same codes.anyone have this problem before ??
November 13, 2021