How do you replace a DPFE sensor on a 2001 Ford Expedition 4.6 liter?

To replace the DPFE (Delta Pressure Feedback EGR) sensor on a 2001 Ford Expedition 4.6 liter, first disconnect the negative battery cable for safety. Locate the DPFE sensor, which is typically mounted near the EGR valve, and unplug the electrical connector. Remove the mounting bolts and carefully detach the sensor from its bracket. Install the new sensor by reversing the removal process, ensuring all connections are secure before reconnecting the battery.