Help with 98' Integra Pleaseee

Hey, i have a 98 Acura Integra LS and i was going 85 mph last night on the highway but when i got off the highway my "check engine" lite came on.. i dont feel anything wrong with the car.. nebody have ne ideas?? thanks

HEY DUDE.
I DON'T KNOW WHY YOUR CEL CAME ON BUT IF YOU WANT TO CHECK IT YOURSELF, FOLLOW THIS LINK TO SHOW YOU HOW.

http://www.automotiveforums.com/vbulletin/showthread.php?t=277620

i have a 98 GSR, my gas cap says if i dont tighten it 3 clicks after i get gas, my check engine light might come on. maybe u didnt tighten it 3 clicks?