Thanks for the replies guys. I tried the gas cap because the previous owner said he had to replace the gas cap before because of that reason, and about 2 weeks after I got the car, the check engine light came on and it was the gas cap, but this time it wasn't. I know about the button for the Maintenance Required but it didn't work for the check engine light =(. I'll try the back up radio fuse to reset, if not then I'll just have to pull the positive battery. I know that'll reset it but I just didn't feel like setting my CD Player back to the way it is now with the frequency and such. Plus when I got my alarm put in the other week my clock was reset but my CD Player settings were the same and that's when I swore I read something about pulling the clock fuse to reset the ECU because I remember thinking that's what they must have done. Anyway, thanks for the help guys, I'll see how it goes.