P0300 Engine error code Service Engine Soon light

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04-29-2024, 06:15 PM

2009G37Scoupe

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P0300 Engine error code Service Engine Soon light

Hi guys just got a G37 and disappointed that the vehicle already got a Service Engine Soon light in the first month. Code reads P0300 (random misfire). So i changed all the spark plugs to NGK iridium plugs reset the code at my shop and the light came back on after about a week. What do you guys normally do in this situation? replace all 6 ignition coils next?
Any help would be great.

Last edited by 2009G37Scoupe; 05-08-2024 at 06:55 PM. Reason: error