Code 450 evap sensor

Hi, my car is a 2000 xk8 coupe in phoenix red. has 48,000 miles so not heavy use. recently the check engine light came on and my obd reader says code 450, evap sensor. Looking into the various manuals and service cd, it seems that this sensor moved around a bit during production. can anyone indicate where it is located on the 2000 xk8? what is involved in testing the unit and replacing it if necessary? Could it be anything further than the sensor?
Thank You, Martin, Claremont, CA USA

It is the DTC for the fuel tank PRESSURE SENSOR!!

It’s function is for the EVAP leak detection.

The Electrical Guide will have the location for each MY.