CD Player on 2003 Ford Expedition

CD player does not play; it reads cd error.

Asked by for the 2003 Ford Expedition
I presume you have tried playing a CD's that are non copied or CD's with labels. You could try a CD head cleaner or try spraying electrical cleaner used for cleaning key boards you can get it at Radio Shack.
There are several companies that specialize repairing Ford factory units.