What will fix this?

I have a 1996 Dodge Intrepid 3.5 liter V-6, with automatic transmission. The check engine light came on. When I scanned it, the following codes came up: P0700 - transmission control system malfunction, P1768 - manual specific powertrain trouble code, & P 1698 - PCM fault no CCD message from TCM. Is anyone out there able to please tell me what it would take to fix all this? What are the odds I need a whole new transmission? Any insight, that anyone would be able to help give me would be greatly appreciated. - Thanks!

does it fail to crank at times? i have replaced many ignition switches for this problem but keep in mind you are having a communication or BUS problem at times and many many things affect the BUS system
any controller can pull the BUS down or a short in the BUS itself cheapest thing to try in my mind is the ignition switch and most common

thank you so much! I'll let you know how it turns out