UKALUM

Is there a way to find out what caused the "Check Engine" light to come on?
If so, how do you get the codes and where can I find code information?

I have a 93 Honda Accord EX. The check engine light came on, but
everything seems to be running pretty smooth. I did put in a bottle of
Techron fuel injector cleaner several days ago, and wonder it this may
have triggered it.