C0638

C0638 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0638 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 C0638 Fault Code Meaning :

Ford C0638 Symptoms :

Ford C0638 Reasons :

How To Fix Ford C0638 Trouble Code ?

Which Ford cars have the code C0638?

  • C0638 Ford Aerostar
  • C0638 Ford Bronco
  • C0638 Ford C-Max
  • C0638 Ford C-Max Energi
  • C0638 Ford C-Max Hybrid
  • C0638 Ford Contour
  • C0638 Ford Crown Victoria
  • C0638 Ford EcoSport
  • C0638 Ford Econoline
  • C0638 Ford Edge
  • C0638 Ford Escape
  • C0638 Ford Escape Hybrid
  • C0638 Ford Escort
  • C0638 Ford Everest
  • C0638 Ford Excursion
  • C0638 Ford Expedition
  • C0638 Ford Explorer
  • C0638 Ford Explorer Sport Trac
  • C0638 Ford F-150
  • C0638 Ford F-250
  • C0638 Ford F-350
  • C0638 Ford Fiesta
  • C0638 Ford Flex
  • C0638 Ford Focus
  • C0638 Ford Focus Electric
  • C0638 Ford Freestar
  • C0638 Ford Freestyle
  • C0638 Ford Fusion
  • C0638 Ford Fusion Energi
  • C0638 Ford Fusion Hybrid
  • C0638 Ford Fusion Plug-In Hybrid
  • C0638 Ford GT
  • C0638 Ford Mustang
  • C0638 Ford Mustang Mach-E
  • C0638 Ford Mystique
  • C0638 Ford Probe
  • C0638 Ford Ranger
  • C0638 Ford Taurus
  • C0638 Ford Taurus X
  • C0638 Ford Tempo
  • C0638 Ford Thunderbird
  • C0638 Ford Transit
  • C0638 Ford Transit Connect
  • C0638 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.