miki2022 Posted February 6, 2022 Report Share Posted February 6, 2022 Please I need help with this code, PO303 Quote Link to comment Share on other sites More sharing options...
2late4u Posted February 6, 2022 Report Share Posted February 6, 2022 What causes a P0303 code? Code P0303 Causes Cylinder 3 misfires can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure. The most common reason for this to happen is faulty or worn-out spark plug coil packs, especially if it's been a while since you had a tune-up. larryl 1 Quote Link to comment Share on other sites More sharing options...
jkeaton Posted February 7, 2022 Report Share Posted February 7, 2022 Moved to the correct section. https://www.obd-codes.com/p0303 Quote Link to comment Share on other sites More sharing options...
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