U3874

U3874 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3874 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford U3874 Fault Code Meaning :

Ford U3874 Symptoms :

Ford U3874 Reasons :

How To Fix Ford U3874 Trouble Code ?

Which Ford cars have the code U3874?

  • U3874 Ford Aerostar
  • U3874 Ford Bronco
  • U3874 Ford C-Max
  • U3874 Ford C-Max Energi
  • U3874 Ford C-Max Hybrid
  • U3874 Ford Contour
  • U3874 Ford Crown Victoria
  • U3874 Ford EcoSport
  • U3874 Ford Econoline
  • U3874 Ford Edge
  • U3874 Ford Escape
  • U3874 Ford Escape Hybrid
  • U3874 Ford Escort
  • U3874 Ford Everest
  • U3874 Ford Excursion
  • U3874 Ford Expedition
  • U3874 Ford Explorer
  • U3874 Ford Explorer Sport Trac
  • U3874 Ford F-150
  • U3874 Ford F-250
  • U3874 Ford F-350
  • U3874 Ford Fiesta
  • U3874 Ford Flex
  • U3874 Ford Focus
  • U3874 Ford Focus Electric
  • U3874 Ford Freestar
  • U3874 Ford Freestyle
  • U3874 Ford Fusion
  • U3874 Ford Fusion Energi
  • U3874 Ford Fusion Hybrid
  • U3874 Ford Fusion Plug-In Hybrid
  • U3874 Ford GT
  • U3874 Ford Mustang
  • U3874 Ford Mustang Mach-E
  • U3874 Ford Mystique
  • U3874 Ford Probe
  • U3874 Ford Ranger
  • U3874 Ford Taurus
  • U3874 Ford Taurus X
  • U3874 Ford Tempo
  • U3874 Ford Thunderbird
  • U3874 Ford Transit
  • U3874 Ford Transit Connect
  • U3874 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.