P0401

P0401 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0401 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.The position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford P0401 Fault Code Meaning :

Ford P0401 Symptoms :

Ford P0401 Reasons :

How To Fix Ford P0401 Trouble Code ?

Which Ford cars have the code P0401?

  • P0401 Ford Aerostar
  • P0401 Ford Bronco
  • P0401 Ford C-Max
  • P0401 Ford C-Max Energi
  • P0401 Ford C-Max Hybrid
  • P0401 Ford Contour
  • P0401 Ford Crown Victoria
  • P0401 Ford EcoSport
  • P0401 Ford Econoline
  • P0401 Ford Edge
  • P0401 Ford Escape
  • P0401 Ford Escape Hybrid
  • P0401 Ford Escort
  • P0401 Ford Everest
  • P0401 Ford Excursion
  • P0401 Ford Expedition
  • P0401 Ford Explorer
  • P0401 Ford Explorer Sport Trac
  • P0401 Ford F-150
  • P0401 Ford F-250
  • P0401 Ford F-350
  • P0401 Ford Fiesta
  • P0401 Ford Flex
  • P0401 Ford Focus
  • P0401 Ford Focus Electric
  • P0401 Ford Freestar
  • P0401 Ford Freestyle
  • P0401 Ford Fusion
  • P0401 Ford Fusion Energi
  • P0401 Ford Fusion Hybrid
  • P0401 Ford Fusion Plug-In Hybrid
  • P0401 Ford GT
  • P0401 Ford Mustang
  • P0401 Ford Mustang Mach-E
  • P0401 Ford Mystique
  • P0401 Ford Probe
  • P0401 Ford Ranger
  • P0401 Ford Taurus
  • P0401 Ford Taurus X
  • P0401 Ford Tempo
  • P0401 Ford Thunderbird
  • P0401 Ford Transit
  • P0401 Ford Transit Connect
  • P0401 Ford Windstar

A code is a fault code and it indicates that something has gone wrong with your car's engine.

It can be caused by many different problems, including a faulty battery, a bad fuel pump, or even a cracked exhaust manifold.

You will need to diagnose the problem before you can fix it. The best way to do this is with an OBD scanner tool.

A scan tool will tell you what needs fixing and how much it will cost in order to fix that particular issue.