Thanks everyone for there Input about my car, Im going to try those ideas Toysrme and no Lacebug Sydney im not Shayam I just purchase this car about a month ago cheap about thirty-three hundred dollars and I replace the windshield and put a new set of tires on it and put a third-brake light in, and when i was getting my oil change and a coolant flush, that guy told me that. And i was like (what? the car runs good) but the check engine light is on (but i know that got to do with the emission) I hope?
I read on this site that you can reset it by removing a battery cable? so im going to try that and see does it come on again? If it does then i will try to clean the egr valve and hopefully that will solve that.
Thanks again everyone