I recommend that anyone with a vehicle out of manufacturer's warranty invest in an OBD-II reader. There's not much worse than having to take your vehicle to someone for them to tell you what's wrong with it. Sure, Autozone and others will check it for free, but how big of a pain is it to drive a car there when you know the car isn't working right to begin with?

Just my 2 cents

Hopefully the CEL behaves and doesn't come back anytime soon.