It seems that it's hard to find a list of what codes mean and their possible causes so I just uploaded one that can be accessed here.... http://members.monarch.net/dave_r/dtc's.htm
I picked 1999 as a model year but most other years are the same or very close to it. The list of possible causes isn't absolutely all that could cause the codes but will give you an idea of what's what. Let me know if you have any comments or ideas on how this could be better.

 

Nice job, thanks again.
Pete