P3994

P3994 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3994 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 P3994 Fault Code Meaning :

Ford P3994 Symptoms :

Ford P3994 Reasons :

How To Fix Ford P3994 Trouble Code ?

Which Ford cars have the code P3994?

  • P3994 Ford Aerostar
  • P3994 Ford Bronco
  • P3994 Ford C-Max
  • P3994 Ford C-Max Energi
  • P3994 Ford C-Max Hybrid
  • P3994 Ford Contour
  • P3994 Ford Crown Victoria
  • P3994 Ford EcoSport
  • P3994 Ford Econoline
  • P3994 Ford Edge
  • P3994 Ford Escape
  • P3994 Ford Escape Hybrid
  • P3994 Ford Escort
  • P3994 Ford Everest
  • P3994 Ford Excursion
  • P3994 Ford Expedition
  • P3994 Ford Explorer
  • P3994 Ford Explorer Sport Trac
  • P3994 Ford F-150
  • P3994 Ford F-250
  • P3994 Ford F-350
  • P3994 Ford Fiesta
  • P3994 Ford Flex
  • P3994 Ford Focus
  • P3994 Ford Focus Electric
  • P3994 Ford Freestar
  • P3994 Ford Freestyle
  • P3994 Ford Fusion
  • P3994 Ford Fusion Energi
  • P3994 Ford Fusion Hybrid
  • P3994 Ford Fusion Plug-In Hybrid
  • P3994 Ford GT
  • P3994 Ford Mustang
  • P3994 Ford Mustang Mach-E
  • P3994 Ford Mystique
  • P3994 Ford Probe
  • P3994 Ford Ranger
  • P3994 Ford Taurus
  • P3994 Ford Taurus X
  • P3994 Ford Tempo
  • P3994 Ford Thunderbird
  • P3994 Ford Transit
  • P3994 Ford Transit Connect
  • P3994 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.