You can reset the code by disconnecting the battery for30 seconds or more. Longer is better since I really don't know but it works! Before you do, just turn the key on but don't start it. Within about 30 seconds the check engine light should flash either a series of short flashes or a long flash followed by short ones. That will be the trouble code.
You may be able to find a list of codes by google search or manualslib.com or on here.