[Love my Rabbit]

My 2006 2.5L Rabbit is having some slight transmission issues and the dealer has said replace it and an independent mechanic has said rebuild and replace the valve body. Because I want to know as much about the issue as possible I hooked an OBDII reader and found a fault code P0932 (DTC0932) Transmission Pressure Sensor. Now I have no idea where this sensor is but if that's the fault I'm getting I'd like to know how complicated it is to replace this one part. Do I need to open the whole transmission to do it or can it be done with minimal inconvenience?

Any help directing me to more information on this would be really appreciated.