The engine moving to around 1100 rpm is completely normal when this code is thrown. It'll stay that way until the code is cleared.
This code really is sort of a mystery with no 100% fix out there short of a tune and auto-clear. IMO, it's just a result of leaner air than expected entering the engine. As long as it's just a 300 code and it doesn't specify a certain cylinder, I wouldn't give it much worry.
It is pretty annoying, though.
|