Possible causes
– Faulty Differential Pressure Feedback Electronic (DPFE) sensor
– Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
– Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection
– Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
– Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection
Tech description
There is a factory service bulletin for the following Ford models:
2000-2002 Ford Taurus
2001-2002 Ford Crown Victoria
2001-2002 Ford Focus
2001-2002 Ford Mustang
2001 Ford Explorer USPS
2001-2002 Ford E Series
2001-2002 Ford Escape
2001-2002 Ford Expedition
2001-2002 Ford Explorer Sport Trac
2001-2002 Ford Explorer Sport
2001-2002 Ford F-150
2001-2002 Ford Ranger
2001-2002 Ford Windstar
2002-2003 Ford Explorer
Ford Factory Service Bulletin OBDII Code P1401 Code
Sensor replacement procedure 2001 Ford Focus:
Note: User Submitted Video
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1401 FORD OBD Code Description