Help on a dash light!

I was driving home from work today and the service engine light turned on. I let my 2001 sit for about an hour and went out and checked the oil, power steering, and coolant fluids. All check out fine. Do you know what I can troubleshoot next????

Thanks!
Brett

the best bet would to be get the car scanned then come back with the codes. to many things to just guess.
This way your not just throwing parts on you dont need.