P9F79

P9F79 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P9F79 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 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 P9F79 Fault Code Meaning :

Ford P9F79 Symptoms :

Ford P9F79 Reasons :

How To Fix Ford P9F79 Trouble Code ?

Which Ford cars have the code P9F79?

  • P9F79 Ford Aerostar
  • P9F79 Ford Bronco
  • P9F79 Ford C-Max
  • P9F79 Ford C-Max Energi
  • P9F79 Ford C-Max Hybrid
  • P9F79 Ford Contour
  • P9F79 Ford Crown Victoria
  • P9F79 Ford EcoSport
  • P9F79 Ford Econoline
  • P9F79 Ford Edge
  • P9F79 Ford Escape
  • P9F79 Ford Escape Hybrid
  • P9F79 Ford Escort
  • P9F79 Ford Everest
  • P9F79 Ford Excursion
  • P9F79 Ford Expedition
  • P9F79 Ford Explorer
  • P9F79 Ford Explorer Sport Trac
  • P9F79 Ford F-150
  • P9F79 Ford F-250
  • P9F79 Ford F-350
  • P9F79 Ford Fiesta
  • P9F79 Ford Flex
  • P9F79 Ford Focus
  • P9F79 Ford Focus Electric
  • P9F79 Ford Freestar
  • P9F79 Ford Freestyle
  • P9F79 Ford Fusion
  • P9F79 Ford Fusion Energi
  • P9F79 Ford Fusion Hybrid
  • P9F79 Ford Fusion Plug-In Hybrid
  • P9F79 Ford GT
  • P9F79 Ford Mustang
  • P9F79 Ford Mustang Mach-E
  • P9F79 Ford Mystique
  • P9F79 Ford Probe
  • P9F79 Ford Ranger
  • P9F79 Ford Taurus
  • P9F79 Ford Taurus X
  • P9F79 Ford Tempo
  • P9F79 Ford Thunderbird
  • P9F79 Ford Transit
  • P9F79 Ford Transit Connect
  • P9F79 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.