Srpinter transmission temp cannot be read with a typical ODB tool, but can be read by tapping into a wire into the TCM and reading the voltage.
The TCM is located under the drivers seat. On connector C2, tap into the Pin 34 which is the Grey wire with a blue stripe. Put a volt meter on this wire, and another on ground and read the voltages.
Use the table below to translate the voltage to transmission temp.
Don's Technology Blog 