OBD PID Data Monitor
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Ford RV Cutaway, 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
The PID monitor for OBD offers real time evaluation of several emissions-related parameters. Most of these are related to the HO2S, for which the diesel has no equivalent.