Hyundai Repair: engine check light, educated guess, trouble code

Question
I have a 2005 Accent, manual, no ac, and just 6900 km.  At 6900 km the engine light came on and yet on performance is not affected.  I will be going to the  dealer but  can you make an educated guess as to what this cause could be.
Thank you in advance!

Answer
Sorry if you get a refusal message on this, I accidentally clicked in the wrong place on my answer page.

Unfortunately, Ron, there's pages of things that could set the check engine lamp.  I cann't give you a guess higher than about 5% without knowing what the trouble code is.