C0438

C0438 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0438 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 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 FF.

The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford C0438 Fault Code Meaning :

Ford C0438 Symptoms :

Ford C0438 Reasons :

How To Fix Ford C0438 Trouble Code ?

Which Ford cars have the code C0438?

  • C0438 Ford Aerostar
  • C0438 Ford Bronco
  • C0438 Ford C-Max
  • C0438 Ford C-Max Energi
  • C0438 Ford C-Max Hybrid
  • C0438 Ford Contour
  • C0438 Ford Crown Victoria
  • C0438 Ford EcoSport
  • C0438 Ford Econoline
  • C0438 Ford Edge
  • C0438 Ford Escape
  • C0438 Ford Escape Hybrid
  • C0438 Ford Escort
  • C0438 Ford Everest
  • C0438 Ford Excursion
  • C0438 Ford Expedition
  • C0438 Ford Explorer
  • C0438 Ford Explorer Sport Trac
  • C0438 Ford F-150
  • C0438 Ford F-250
  • C0438 Ford F-350
  • C0438 Ford Fiesta
  • C0438 Ford Flex
  • C0438 Ford Focus
  • C0438 Ford Focus Electric
  • C0438 Ford Freestar
  • C0438 Ford Freestyle
  • C0438 Ford Fusion
  • C0438 Ford Fusion Energi
  • C0438 Ford Fusion Hybrid
  • C0438 Ford Fusion Plug-In Hybrid
  • C0438 Ford GT
  • C0438 Ford Mustang
  • C0438 Ford Mustang Mach-E
  • C0438 Ford Mystique
  • C0438 Ford Probe
  • C0438 Ford Ranger
  • C0438 Ford Taurus
  • C0438 Ford Taurus X
  • C0438 Ford Tempo
  • C0438 Ford Thunderbird
  • C0438 Ford Transit
  • C0438 Ford Transit Connect
  • C0438 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.