U3720

U3720 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3720 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 U3720 Fault Code Meaning :

Ford U3720 Symptoms :

Ford U3720 Reasons :

How To Fix Ford U3720 Trouble Code ?

Which Ford cars have the code U3720?

  • U3720 Ford Aerostar
  • U3720 Ford Bronco
  • U3720 Ford C-Max
  • U3720 Ford C-Max Energi
  • U3720 Ford C-Max Hybrid
  • U3720 Ford Contour
  • U3720 Ford Crown Victoria
  • U3720 Ford EcoSport
  • U3720 Ford Econoline
  • U3720 Ford Edge
  • U3720 Ford Escape
  • U3720 Ford Escape Hybrid
  • U3720 Ford Escort
  • U3720 Ford Everest
  • U3720 Ford Excursion
  • U3720 Ford Expedition
  • U3720 Ford Explorer
  • U3720 Ford Explorer Sport Trac
  • U3720 Ford F-150
  • U3720 Ford F-250
  • U3720 Ford F-350
  • U3720 Ford Fiesta
  • U3720 Ford Flex
  • U3720 Ford Focus
  • U3720 Ford Focus Electric
  • U3720 Ford Freestar
  • U3720 Ford Freestyle
  • U3720 Ford Fusion
  • U3720 Ford Fusion Energi
  • U3720 Ford Fusion Hybrid
  • U3720 Ford Fusion Plug-In Hybrid
  • U3720 Ford GT
  • U3720 Ford Mustang
  • U3720 Ford Mustang Mach-E
  • U3720 Ford Mystique
  • U3720 Ford Probe
  • U3720 Ford Ranger
  • U3720 Ford Taurus
  • U3720 Ford Taurus X
  • U3720 Ford Tempo
  • U3720 Ford Thunderbird
  • U3720 Ford Transit
  • U3720 Ford Transit Connect
  • U3720 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.