U1781

U1781 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1781 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.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 U1781 Fault Code Meaning :

Ford U1781 Symptoms :

Ford U1781 Reasons :

How To Fix Ford U1781 Trouble Code ?

Which Ford cars have the code U1781?

  • U1781 Ford Aerostar
  • U1781 Ford Bronco
  • U1781 Ford C-Max
  • U1781 Ford C-Max Energi
  • U1781 Ford C-Max Hybrid
  • U1781 Ford Contour
  • U1781 Ford Crown Victoria
  • U1781 Ford EcoSport
  • U1781 Ford Econoline
  • U1781 Ford Edge
  • U1781 Ford Escape
  • U1781 Ford Escape Hybrid
  • U1781 Ford Escort
  • U1781 Ford Everest
  • U1781 Ford Excursion
  • U1781 Ford Expedition
  • U1781 Ford Explorer
  • U1781 Ford Explorer Sport Trac
  • U1781 Ford F-150
  • U1781 Ford F-250
  • U1781 Ford F-350
  • U1781 Ford Fiesta
  • U1781 Ford Flex
  • U1781 Ford Focus
  • U1781 Ford Focus Electric
  • U1781 Ford Freestar
  • U1781 Ford Freestyle
  • U1781 Ford Fusion
  • U1781 Ford Fusion Energi
  • U1781 Ford Fusion Hybrid
  • U1781 Ford Fusion Plug-In Hybrid
  • U1781 Ford GT
  • U1781 Ford Mustang
  • U1781 Ford Mustang Mach-E
  • U1781 Ford Mystique
  • U1781 Ford Probe
  • U1781 Ford Ranger
  • U1781 Ford Taurus
  • U1781 Ford Taurus X
  • U1781 Ford Tempo
  • U1781 Ford Thunderbird
  • U1781 Ford Transit
  • U1781 Ford Transit Connect
  • U1781 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.