Error Code P0705

I have an 2003 Taurus its throwing this code says its a Transmission Range Sensor on the input side...where is this located and how easy is it to change...any help in much appreciated....is the TRS also known as the neutral position switch?

The TRS is on the front side of the transmission. It is relatively easy to get to and change. I haven't seen many go on the newer body style tauruses, but am starting to wonder about mine.