U3877

U3877 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3877 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford U3877 Fault Code Meaning :

Ford U3877 Symptoms :

Ford U3877 Reasons :

How To Fix Ford U3877 Trouble Code ?

Which Ford cars have the code U3877?

  • U3877 Ford Aerostar
  • U3877 Ford Bronco
  • U3877 Ford C-Max
  • U3877 Ford C-Max Energi
  • U3877 Ford C-Max Hybrid
  • U3877 Ford Contour
  • U3877 Ford Crown Victoria
  • U3877 Ford EcoSport
  • U3877 Ford Econoline
  • U3877 Ford Edge
  • U3877 Ford Escape
  • U3877 Ford Escape Hybrid
  • U3877 Ford Escort
  • U3877 Ford Everest
  • U3877 Ford Excursion
  • U3877 Ford Expedition
  • U3877 Ford Explorer
  • U3877 Ford Explorer Sport Trac
  • U3877 Ford F-150
  • U3877 Ford F-250
  • U3877 Ford F-350
  • U3877 Ford Fiesta
  • U3877 Ford Flex
  • U3877 Ford Focus
  • U3877 Ford Focus Electric
  • U3877 Ford Freestar
  • U3877 Ford Freestyle
  • U3877 Ford Fusion
  • U3877 Ford Fusion Energi
  • U3877 Ford Fusion Hybrid
  • U3877 Ford Fusion Plug-In Hybrid
  • U3877 Ford GT
  • U3877 Ford Mustang
  • U3877 Ford Mustang Mach-E
  • U3877 Ford Mystique
  • U3877 Ford Probe
  • U3877 Ford Ranger
  • U3877 Ford Taurus
  • U3877 Ford Taurus X
  • U3877 Ford Tempo
  • U3877 Ford Thunderbird
  • U3877 Ford Transit
  • U3877 Ford Transit Connect
  • U3877 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.