Pressure Feedback Exhaust Sensor: Description and Operation

Differential Pressure Feedback EGR (DPFE) Sensor:

PURPOSE
The Differential Pressure Feedback (DPFE) EGR sensor converts a varying exhaust pressure signal into a proportional analog voltage which is digitized by the Powertrain Control Module (PCM).

OPERATION
The PCM uses the signal received from the DPFE sensor to compute the optimum EGR flow.