I have a 01 grand caravan that is in limp mode...only code I get from doing key dance is p0700.no check engine light either.fluid is topped.i know its a generic tcm code .any ideals on where to start.

P0700 Transmission Control System Malfunction
P1776 Ignition Retard Request Duration Fault

P0700 transmission control system malfunction (failure)
P0732 gear 2 incorrect ratio
P0734 gear 4 incorrect ratio

Check level and conditions of fluid

P0700 Transmission Control System Malfunction
P0765 Shift Solenoid D Malfunction
Clear fault codes and see if it comes back, if so,check wiring and plug for bad connection.

700 is a generic transmission code. It went to limp mode, that's why it drives like it does. Have the codes read with a newer /better code reader or a scanner. Find out what other codes are in there.

P0455 = Evap leak monitor large leak detected.
This code usually means the gas cap may have been loose or needs the rubber gasket.

P0500 = No vehicle speed sensor signal.
Vehicle speed sensor is located on the transmission near one of the axle shafts (it may need replacing).

P0700 = EATX controller DTC present.
This simply means you have transmission related codes.

P0732 = Gear ratio error in 2nd gear.
This code is of some concern, it means the transmission is slipping in 2nd gear. However the trans may be in limp mode due to the speed sensor code (limp mode means the trans starts out in second gear in order to at least get to a mechanic). The first thing I would do is have these codes cleared as there may be absolutely nothing wrong with the transmission (especially if you pull the trans dip stick and the fluid does not have a burnt smell. The vehicle should drive normally after that. If the check engine light comes back, have the codes scanned ASAP (before any other unrelated code sets). Chances are it may be the output speed sensor if this happens (easy fix). Hope this helps

Regards

PO700 Transmission control unit

Darrell, The trans went into limp mode. 41te trans do funny things. The limp setting is so you can get home or to the dealer. As for the slipping , check fluid first. If ok scan for codes from trans...

1998 dodge caravan code P0700-Transmission Control System (Malfunction Indicator Lamp Request) How do I fix this?

YOU NEED TO CHECK POWER AND GROUND CIRCUITS TO TCM

It may have a "loss of prime" code that usually follows a service of the fluid and filter. After you're sure the fluid is full at operating temperature, disconnect the battery for a few minutes and reconnect to see if the code resets. I hope this helps.