Scott,
Looking at your original post, I don't think that the engine position sensor is the cause of your problems. Looking at the causes of the codes all point to voltage problems (plus the charge light illuminated on the dash). I think this is either a harness, plug or maybe even a module problem (ecm/pcm) Hopefully not.
I need to sign off right now to go to a viewing, but I'd like to research this some more, and possibly help locate the problem
I'll PM you tomorrow, once I get a chance to look deeper
Tom