P0394

P0394 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0394 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P0394 Fault Code Meaning :

Ford P0394 Symptoms :

Ford P0394 Reasons :

How To Fix Ford P0394 Trouble Code ?

Which Ford cars have the code P0394?

  • P0394 Ford Aerostar
  • P0394 Ford Bronco
  • P0394 Ford C-Max
  • P0394 Ford C-Max Energi
  • P0394 Ford C-Max Hybrid
  • P0394 Ford Contour
  • P0394 Ford Crown Victoria
  • P0394 Ford EcoSport
  • P0394 Ford Econoline
  • P0394 Ford Edge
  • P0394 Ford Escape
  • P0394 Ford Escape Hybrid
  • P0394 Ford Escort
  • P0394 Ford Everest
  • P0394 Ford Excursion
  • P0394 Ford Expedition
  • P0394 Ford Explorer
  • P0394 Ford Explorer Sport Trac
  • P0394 Ford F-150
  • P0394 Ford F-250
  • P0394 Ford F-350
  • P0394 Ford Fiesta
  • P0394 Ford Flex
  • P0394 Ford Focus
  • P0394 Ford Focus Electric
  • P0394 Ford Freestar
  • P0394 Ford Freestyle
  • P0394 Ford Fusion
  • P0394 Ford Fusion Energi
  • P0394 Ford Fusion Hybrid
  • P0394 Ford Fusion Plug-In Hybrid
  • P0394 Ford GT
  • P0394 Ford Mustang
  • P0394 Ford Mustang Mach-E
  • P0394 Ford Mystique
  • P0394 Ford Probe
  • P0394 Ford Ranger
  • P0394 Ford Taurus
  • P0394 Ford Taurus X
  • P0394 Ford Tempo
  • P0394 Ford Thunderbird
  • P0394 Ford Transit
  • P0394 Ford Transit Connect
  • P0394 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.