Welcome to DF
You are smart not dumb, You have join and a forum that have a lot of knowledgeable members that may not be techs. But ask a lot of questions to those who are techs and learn. And teach other members on what they have learn. Thats what makes this forum as great as it is. Starting in 1996 dodge, chrysler and jeep, starting to have some of the controllers to share information with each other is when a problem came up with a circuit the check engine light would come on. Such as a transmission problem. The only problem was the PCM would give and owner/member a P0700 code. That code is to let you know that there is a problem in the transmission circuit. Now you need a scanner that can read all modules, to find out what stored or active codes you have in the other modules. Now if you needed to know what the codes are, in this section before starting a new thread. You will see a section that reads tizzy and other DIY and below that you will see a list of trouble code and by year. I hope this answer your question.