Are those the only codes? I have never seen a fuel trim error on mine.
I would think fuel trim errors would be related to vacuum leak(s) and/or O2 sensor issues.
I never did figure out what mine is caused by--the weird thing is it runs PERFECT if it's under somewhere around 25*F outside. It's only when it's right around freezing that it goes all crazy. Above somewhere around 40* it doesn't do it either. Very strange
I have cleaned my MAF but haven't tried replacing it. I know there is some sort of switchover that the valvetronics system does the first 90 seconds it's running. If I understand it correctly, the valves are actually opening all the way (like a normal engine) when it's first started and the computer uses the throttle body to control RPM. Then it makes the switch over from throttle body to valvetronics.
I need to do some more googling and make sure that's correct and how it actually does it, but I feel that mine is related to something in that process, I'm just not sure what exactly..
Last edited by schpenxel; 02-04-2013 at 07:33 PM.