Differential Press. Feedback Elect. (DPFE) EGR Transducer
WARNING: This page is about a different car, the 1994 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
Faults in DPFE transducer or circuit should set a service code. See QUICK TEST in TESTS W/CODES - EEC-IV (3.2L SHO) article in the ENGINE PERFORMANCE section. If service code has not been set, see CIRCUIT TEST DL in TESTS W/CODES - EEC-IV (3.2L SHO) article in the ENGINE PERFORMANCE section for diagnostic procedures.