U3878

U3878 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3878 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.The wiper switch is in the OFF position and the BHM park input from the wiper motor is not in park position. Troubleshoot for a wiper motor park switch circuit fault.

When the engine is in idle or in low engine speed and torque condition, the differential pressure over the DPF is expected to be close to zero. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford U3878 Fault Code Meaning :

Ford U3878 Symptoms :

Ford U3878 Reasons :

How To Fix Ford U3878 Trouble Code ?

Which Ford cars have the code U3878?

  • U3878 Ford Aerostar
  • U3878 Ford Bronco
  • U3878 Ford C-Max
  • U3878 Ford C-Max Energi
  • U3878 Ford C-Max Hybrid
  • U3878 Ford Contour
  • U3878 Ford Crown Victoria
  • U3878 Ford EcoSport
  • U3878 Ford Econoline
  • U3878 Ford Edge
  • U3878 Ford Escape
  • U3878 Ford Escape Hybrid
  • U3878 Ford Escort
  • U3878 Ford Everest
  • U3878 Ford Excursion
  • U3878 Ford Expedition
  • U3878 Ford Explorer
  • U3878 Ford Explorer Sport Trac
  • U3878 Ford F-150
  • U3878 Ford F-250
  • U3878 Ford F-350
  • U3878 Ford Fiesta
  • U3878 Ford Flex
  • U3878 Ford Focus
  • U3878 Ford Focus Electric
  • U3878 Ford Freestar
  • U3878 Ford Freestyle
  • U3878 Ford Fusion
  • U3878 Ford Fusion Energi
  • U3878 Ford Fusion Hybrid
  • U3878 Ford Fusion Plug-In Hybrid
  • U3878 Ford GT
  • U3878 Ford Mustang
  • U3878 Ford Mustang Mach-E
  • U3878 Ford Mystique
  • U3878 Ford Probe
  • U3878 Ford Ranger
  • U3878 Ford Taurus
  • U3878 Ford Taurus X
  • U3878 Ford Tempo
  • U3878 Ford Thunderbird
  • U3878 Ford Transit
  • U3878 Ford Transit Connect
  • U3878 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.