My check engine light came on tonight.

About 3 minutes after I started up the xfire i was merging into traffic. I pretty much just took off as fast as you can. Then I don't think the light was on, but about 30 seconds later I floored it again to get past some other traffic, and thats when I noticed the light.

It drives exactly the same though after that, which was only about 10 miles. Anyway I'm annoyed. This whole next week I have a very special class for my new job, so I don't even know if I have time to take it to a dealer!

Has anyone elses gone off and what was it for?

Should I really take it to a dealer, or I can just unplug the battery for a few minutes and see if it comes on again?