U3778

U3778 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3778 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 OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford U3778 Fault Code Meaning :

Ford U3778 Symptoms :

Ford U3778 Reasons :

How To Fix Ford U3778 Trouble Code ?

Which Ford cars have the code U3778?

  • U3778 Ford Aerostar
  • U3778 Ford Bronco
  • U3778 Ford C-Max
  • U3778 Ford C-Max Energi
  • U3778 Ford C-Max Hybrid
  • U3778 Ford Contour
  • U3778 Ford Crown Victoria
  • U3778 Ford EcoSport
  • U3778 Ford Econoline
  • U3778 Ford Edge
  • U3778 Ford Escape
  • U3778 Ford Escape Hybrid
  • U3778 Ford Escort
  • U3778 Ford Everest
  • U3778 Ford Excursion
  • U3778 Ford Expedition
  • U3778 Ford Explorer
  • U3778 Ford Explorer Sport Trac
  • U3778 Ford F-150
  • U3778 Ford F-250
  • U3778 Ford F-350
  • U3778 Ford Fiesta
  • U3778 Ford Flex
  • U3778 Ford Focus
  • U3778 Ford Focus Electric
  • U3778 Ford Freestar
  • U3778 Ford Freestyle
  • U3778 Ford Fusion
  • U3778 Ford Fusion Energi
  • U3778 Ford Fusion Hybrid
  • U3778 Ford Fusion Plug-In Hybrid
  • U3778 Ford GT
  • U3778 Ford Mustang
  • U3778 Ford Mustang Mach-E
  • U3778 Ford Mystique
  • U3778 Ford Probe
  • U3778 Ford Ranger
  • U3778 Ford Taurus
  • U3778 Ford Taurus X
  • U3778 Ford Tempo
  • U3778 Ford Thunderbird
  • U3778 Ford Transit
  • U3778 Ford Transit Connect
  • U3778 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.