Pressure Feedback Exhaust Sensor: Description and Operation

Pressure Feedback EGR (PFE) Sensor:

PURPOSE
The Pressure Feedback (PFE) 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 PFE or sensor to compute the optimum EGR flow.