If your X is not an SC model you dont have to worry about the KS code, that code will not affect the NA models, and will not turn on the CEL. So the one that is activating the CEL is the P0430, which I've had on a few times, usually happens when driving at a very steady speed, on flat roads for a mile or so without changing throttle position. I usually just erase the codes with my code reader, or sometimes I'll let it go a few days and it will reset itself.