Grand Marquis V8-281 4.6L SOHC (1992)
Pressure Feedback Exhaust Sensor: Description and Operation
Differential Pressure Feedback EGR Sensor
Differential Pressure Feedback Electronic (DPFE) EGR Sensor
The Differential Pressure Feedback EGR (DPFE) sensor converts a varying exhaust gas pressure signal into a proportional analog voltage that is
digitized by the Electronic Control Assembly (ECA). The ECA uses the signal receives from the DPFE sensor to optimize the EGR flow.