Here's a link to various protocols
http://www.scantool.net/browseCV.html
What kind of scanner do you have? It might be limited to various auto models?
CAN is an electrical field bus interface ( hardware) the "standards" that you refer to are protocols ( think telephone as the interface, but one of you is speaking french the other english). So if you can re-set a CEL with your scanner it's talking the correct language, just doesn't know a few words is my guess...