2002 Toyota Corolla • 177 miles

I just purchased a used Toyota Corolla-I took off the air intake hose to clean the Throttle Body which was very dirty-I used Throttle Body cleaner by CRC-now the CEL comes on any ideas what this could be-I drove the car over 200 miles before I gave it to my daughter as OK-but as I said before I cleaned the throttle body out with CRC and now the CEL comes on. I haven't got a chance to pull the codes yet but what I describe is it anything to worry about-or any ideas what it could possibly be?
June 16, 2013.

I do need a code to give you an opinion on this.

Jun 17, 2013.