It was resolved? So it was fuel injectors? I didn't feel like that ending was very conclusive....some details would have been nice, how many fuel injectors, what was wrong with them etc.

And honestly who cares how old a thread is? The OP may have solved their issue (maybe?) but chances are that someone who comes across this thread is experiencing a similar issue, so all the input is appreciated, even if it doesn't apply to OP.

I installed an oil cooler and the p0300 popped up first start up thank it was a coincidence. I replaced the spark plugs and the code came back after a day. I replaced the coil pack and the code came back after like 2 weeks. Not sure if the oil cooler has anything to do with it but I'm just not sure what direction to go in


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I have an oil cooler as well, but had the P0300 issue before installing it (and after). I don't think that is the problem.