The engine light on your dash.

Means that there is something wrong. When you have time to go to someone that has a scanner, to see what's happening. ( If you just recently got gas, you may want to make sure your gas cap is tight.) That will turn your engine light on also. If you light is flashing on and off really fas. That most of the time I a miss fire. So if you can think back when ever you had the last tune up, that would be helpful.