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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.
