Ive looked around for a bit about this code. Cant seem to get any straight answers. Not many people seem to know what it is, nor how to go about fixing what causes it. Im running COBB AP2 St2. I have no recent changes to the car. The last maintenance ive done besides oil changes was almost two years ago for spark plugs. My Idle has been a tad rough for a little while, but nothing huge, one person on NASIOC suggested replacing one or both of the o2 sensors, I was wondering what the replacement life on those were? The car has around 75k. Any help would be great, tnx.