P0438

P0438 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0438 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.The BHM is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford P0438 Fault Code Meaning :

Ford P0438 Symptoms :

Ford P0438 Reasons :

How To Fix Ford P0438 Trouble Code ?

Which Ford cars have the code P0438?

  • P0438 Ford Aerostar
  • P0438 Ford Bronco
  • P0438 Ford C-Max
  • P0438 Ford C-Max Energi
  • P0438 Ford C-Max Hybrid
  • P0438 Ford Contour
  • P0438 Ford Crown Victoria
  • P0438 Ford EcoSport
  • P0438 Ford Econoline
  • P0438 Ford Edge
  • P0438 Ford Escape
  • P0438 Ford Escape Hybrid
  • P0438 Ford Escort
  • P0438 Ford Everest
  • P0438 Ford Excursion
  • P0438 Ford Expedition
  • P0438 Ford Explorer
  • P0438 Ford Explorer Sport Trac
  • P0438 Ford F-150
  • P0438 Ford F-250
  • P0438 Ford F-350
  • P0438 Ford Fiesta
  • P0438 Ford Flex
  • P0438 Ford Focus
  • P0438 Ford Focus Electric
  • P0438 Ford Freestar
  • P0438 Ford Freestyle
  • P0438 Ford Fusion
  • P0438 Ford Fusion Energi
  • P0438 Ford Fusion Hybrid
  • P0438 Ford Fusion Plug-In Hybrid
  • P0438 Ford GT
  • P0438 Ford Mustang
  • P0438 Ford Mustang Mach-E
  • P0438 Ford Mystique
  • P0438 Ford Probe
  • P0438 Ford Ranger
  • P0438 Ford Taurus
  • P0438 Ford Taurus X
  • P0438 Ford Tempo
  • P0438 Ford Thunderbird
  • P0438 Ford Transit
  • P0438 Ford Transit Connect
  • P0438 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.