'93 Explorer Check Engine Light

I had a check engine light and had to replace two cracked heads. After the work was done the check engine light did not go out. There is no problem with the car but I need to know how to get it to go out.

Thanks!

Why don't you get the code read? Many auto stores do it for free or with just a paper clip you can read it from the check engine light. If everything is normal, it could be the O2 sensor. Coolant damages these and likely with head problems you had a coolant leak.