U3678

U3678 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3678 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 U3678 Fault Code Meaning :

Ford U3678 Symptoms :

Ford U3678 Reasons :

How To Fix Ford U3678 Trouble Code ?

Which Ford cars have the code U3678?

  • U3678 Ford Aerostar
  • U3678 Ford Bronco
  • U3678 Ford C-Max
  • U3678 Ford C-Max Energi
  • U3678 Ford C-Max Hybrid
  • U3678 Ford Contour
  • U3678 Ford Crown Victoria
  • U3678 Ford EcoSport
  • U3678 Ford Econoline
  • U3678 Ford Edge
  • U3678 Ford Escape
  • U3678 Ford Escape Hybrid
  • U3678 Ford Escort
  • U3678 Ford Everest
  • U3678 Ford Excursion
  • U3678 Ford Expedition
  • U3678 Ford Explorer
  • U3678 Ford Explorer Sport Trac
  • U3678 Ford F-150
  • U3678 Ford F-250
  • U3678 Ford F-350
  • U3678 Ford Fiesta
  • U3678 Ford Flex
  • U3678 Ford Focus
  • U3678 Ford Focus Electric
  • U3678 Ford Freestar
  • U3678 Ford Freestyle
  • U3678 Ford Fusion
  • U3678 Ford Fusion Energi
  • U3678 Ford Fusion Hybrid
  • U3678 Ford Fusion Plug-In Hybrid
  • U3678 Ford GT
  • U3678 Ford Mustang
  • U3678 Ford Mustang Mach-E
  • U3678 Ford Mystique
  • U3678 Ford Probe
  • U3678 Ford Ranger
  • U3678 Ford Taurus
  • U3678 Ford Taurus X
  • U3678 Ford Tempo
  • U3678 Ford Thunderbird
  • U3678 Ford Transit
  • U3678 Ford Transit Connect
  • U3678 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.