Possible causes – Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor)– Plugged or damaged EGR tube– Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted– Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1405 FORD OBD Code Description…