P1938

P1938 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1938 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 P1938 Fault Code Meaning :

Ford P1938 Symptoms :

Ford P1938 Reasons :

How To Fix Ford P1938 Trouble Code ?

Which Ford cars have the code P1938?

  • P1938 Ford Aerostar
  • P1938 Ford Bronco
  • P1938 Ford C-Max
  • P1938 Ford C-Max Energi
  • P1938 Ford C-Max Hybrid
  • P1938 Ford Contour
  • P1938 Ford Crown Victoria
  • P1938 Ford EcoSport
  • P1938 Ford Econoline
  • P1938 Ford Edge
  • P1938 Ford Escape
  • P1938 Ford Escape Hybrid
  • P1938 Ford Escort
  • P1938 Ford Everest
  • P1938 Ford Excursion
  • P1938 Ford Expedition
  • P1938 Ford Explorer
  • P1938 Ford Explorer Sport Trac
  • P1938 Ford F-150
  • P1938 Ford F-250
  • P1938 Ford F-350
  • P1938 Ford Fiesta
  • P1938 Ford Flex
  • P1938 Ford Focus
  • P1938 Ford Focus Electric
  • P1938 Ford Freestar
  • P1938 Ford Freestyle
  • P1938 Ford Fusion
  • P1938 Ford Fusion Energi
  • P1938 Ford Fusion Hybrid
  • P1938 Ford Fusion Plug-In Hybrid
  • P1938 Ford GT
  • P1938 Ford Mustang
  • P1938 Ford Mustang Mach-E
  • P1938 Ford Mystique
  • P1938 Ford Probe
  • P1938 Ford Ranger
  • P1938 Ford Taurus
  • P1938 Ford Taurus X
  • P1938 Ford Tempo
  • P1938 Ford Thunderbird
  • P1938 Ford Transit
  • P1938 Ford Transit Connect
  • P1938 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.