U3439

U3439 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3439 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.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 FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford U3439 Fault Code Meaning :

Ford U3439 Symptoms :

Ford U3439 Reasons :

How To Fix Ford U3439 Trouble Code ?

Which Ford cars have the code U3439?

  • U3439 Ford Aerostar
  • U3439 Ford Bronco
  • U3439 Ford C-Max
  • U3439 Ford C-Max Energi
  • U3439 Ford C-Max Hybrid
  • U3439 Ford Contour
  • U3439 Ford Crown Victoria
  • U3439 Ford EcoSport
  • U3439 Ford Econoline
  • U3439 Ford Edge
  • U3439 Ford Escape
  • U3439 Ford Escape Hybrid
  • U3439 Ford Escort
  • U3439 Ford Everest
  • U3439 Ford Excursion
  • U3439 Ford Expedition
  • U3439 Ford Explorer
  • U3439 Ford Explorer Sport Trac
  • U3439 Ford F-150
  • U3439 Ford F-250
  • U3439 Ford F-350
  • U3439 Ford Fiesta
  • U3439 Ford Flex
  • U3439 Ford Focus
  • U3439 Ford Focus Electric
  • U3439 Ford Freestar
  • U3439 Ford Freestyle
  • U3439 Ford Fusion
  • U3439 Ford Fusion Energi
  • U3439 Ford Fusion Hybrid
  • U3439 Ford Fusion Plug-In Hybrid
  • U3439 Ford GT
  • U3439 Ford Mustang
  • U3439 Ford Mustang Mach-E
  • U3439 Ford Mystique
  • U3439 Ford Probe
  • U3439 Ford Ranger
  • U3439 Ford Taurus
  • U3439 Ford Taurus X
  • U3439 Ford Tempo
  • U3439 Ford Thunderbird
  • U3439 Ford Transit
  • U3439 Ford Transit Connect
  • U3439 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.