B0638

B0638 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B0638 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.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford B0638 Fault Code Meaning :

Ford B0638 Symptoms :

Ford B0638 Reasons :

How To Fix Ford B0638 Trouble Code ?

Which Ford cars have the code B0638?

  • B0638 Ford Aerostar
  • B0638 Ford Bronco
  • B0638 Ford C-Max
  • B0638 Ford C-Max Energi
  • B0638 Ford C-Max Hybrid
  • B0638 Ford Contour
  • B0638 Ford Crown Victoria
  • B0638 Ford EcoSport
  • B0638 Ford Econoline
  • B0638 Ford Edge
  • B0638 Ford Escape
  • B0638 Ford Escape Hybrid
  • B0638 Ford Escort
  • B0638 Ford Everest
  • B0638 Ford Excursion
  • B0638 Ford Expedition
  • B0638 Ford Explorer
  • B0638 Ford Explorer Sport Trac
  • B0638 Ford F-150
  • B0638 Ford F-250
  • B0638 Ford F-350
  • B0638 Ford Fiesta
  • B0638 Ford Flex
  • B0638 Ford Focus
  • B0638 Ford Focus Electric
  • B0638 Ford Freestar
  • B0638 Ford Freestyle
  • B0638 Ford Fusion
  • B0638 Ford Fusion Energi
  • B0638 Ford Fusion Hybrid
  • B0638 Ford Fusion Plug-In Hybrid
  • B0638 Ford GT
  • B0638 Ford Mustang
  • B0638 Ford Mustang Mach-E
  • B0638 Ford Mystique
  • B0638 Ford Probe
  • B0638 Ford Ranger
  • B0638 Ford Taurus
  • B0638 Ford Taurus X
  • B0638 Ford Tempo
  • B0638 Ford Thunderbird
  • B0638 Ford Transit
  • B0638 Ford Transit Connect
  • B0638 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.