I have a 2004 Jeep Grand Cherokee, I bought it about a month ago at 65,000 miles, It's now at 68 and change. Everything runs fine, It's been taken care of by the previous owner, and myself. I parked the car Friday afternoon and it sat untill Sunday afternoon when I needed to move it. Over the weekend it snowed (I live in NYC) it got down to about 38 degrees. I got into the car, and it started up perfectly...However I noticed the "check engine light" remained illuminated. Now this is a first for me in this car...Could the light coming on have anything to do with the snow and cold weather? Sounds stupid I know...And what should I do about it? I need it Monday morning to get to school a 70 mile round trip, I don't want to get stuck somewhere... Please help!