Hello and welcome to JustAnswer!

P1788 is for the 2/4 clutch hydraulic pressure switch. This code sets when the pressure switch is in the wrong state for a given gear, or there is a problem in the electrical circuit for the pressure switch. It could be internal trans (very rare), the pressure switch, wiring, or the trans controller. It's a failed pressure switch almost 100% of the time. All pressure switches and solenoids are located in the solenoid pack mounted to the front of the trans, right under the input speed sensor you replaced. Most likely it's going to take a solenoid pack to fix your problem.

Sorry. The P0700 sets in the engine controller any time there is a code stored in the trans controller (the P1788). The P0700 is merely informational and tells you to read the codes from the tcm, the code that matters is the 1788.

It's called the solenoid pack. A Mopar one from a dealer runs right at $200. You can pick up an aftermarket one for about $180.

Here is a link to the aftermarket Dorman solenoid pack at Autozone.

http://www.autozone.com/autozone/catalog/parts/partsShelf.jsp?categoryDisplayName=Drivetrai n&fromType=parts&fromString=search&parentId=12-0&currentPage=1&filterByKeyWord=solenoid&isSearchByPartNumber=false&navValue=11200623&categoryNValue=11299999&fromWhere=&itemId=623-0&displayName=Transmission+Control+Solenoid&searchText=solenoid