P9F51

P9F51 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P9F51 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 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 P9F51 Fault Code Meaning :

Ford P9F51 Symptoms :

Ford P9F51 Reasons :

How To Fix Ford P9F51 Trouble Code ?

Which Ford cars have the code P9F51?

  • P9F51 Ford Aerostar
  • P9F51 Ford Bronco
  • P9F51 Ford C-Max
  • P9F51 Ford C-Max Energi
  • P9F51 Ford C-Max Hybrid
  • P9F51 Ford Contour
  • P9F51 Ford Crown Victoria
  • P9F51 Ford EcoSport
  • P9F51 Ford Econoline
  • P9F51 Ford Edge
  • P9F51 Ford Escape
  • P9F51 Ford Escape Hybrid
  • P9F51 Ford Escort
  • P9F51 Ford Everest
  • P9F51 Ford Excursion
  • P9F51 Ford Expedition
  • P9F51 Ford Explorer
  • P9F51 Ford Explorer Sport Trac
  • P9F51 Ford F-150
  • P9F51 Ford F-250
  • P9F51 Ford F-350
  • P9F51 Ford Fiesta
  • P9F51 Ford Flex
  • P9F51 Ford Focus
  • P9F51 Ford Focus Electric
  • P9F51 Ford Freestar
  • P9F51 Ford Freestyle
  • P9F51 Ford Fusion
  • P9F51 Ford Fusion Energi
  • P9F51 Ford Fusion Hybrid
  • P9F51 Ford Fusion Plug-In Hybrid
  • P9F51 Ford GT
  • P9F51 Ford Mustang
  • P9F51 Ford Mustang Mach-E
  • P9F51 Ford Mystique
  • P9F51 Ford Probe
  • P9F51 Ford Ranger
  • P9F51 Ford Taurus
  • P9F51 Ford Taurus X
  • P9F51 Ford Tempo
  • P9F51 Ford Thunderbird
  • P9F51 Ford Transit
  • P9F51 Ford Transit Connect
  • P9F51 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.