OBD PID Data Monitor
WARNING: This page is about a different car, the 2009 Ford RV Cutaway, 2009 Ford Econoline, 2009 Ford E450 Super Duty, and 2009 Ford Cutaway. 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.