Check engine light

So i Changed the spark plugs and clean the throttle body and mass airflow sensor today and now I have a check engine light
Any thoughts

2006 4 cylinder

 

Pull the code. Any Autozone will do it for free.

 

I did the same thing this morning. I changed the plugs and cleaned the maf. I then started the truck and CEL came on. I let it run for a bit, engine ran smooth. I let it sit for about an hour. I was going to head to autozone and get it checked but next time I started my truck the CEL was gone. It kinda puzzled me.

 

I disconnected my battery for about a half hour...did the trick. Engine is running a lot better with the new plugs and clean stuff