P0668

P0668 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0668 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 P0668 Fault Code Meaning :

Ford P0668 Symptoms :

Ford P0668 Reasons :

How To Fix Ford P0668 Trouble Code ?

Which Ford cars have the code P0668?

  • P0668 Ford Aerostar
  • P0668 Ford Bronco
  • P0668 Ford C-Max
  • P0668 Ford C-Max Energi
  • P0668 Ford C-Max Hybrid
  • P0668 Ford Contour
  • P0668 Ford Crown Victoria
  • P0668 Ford EcoSport
  • P0668 Ford Econoline
  • P0668 Ford Edge
  • P0668 Ford Escape
  • P0668 Ford Escape Hybrid
  • P0668 Ford Escort
  • P0668 Ford Everest
  • P0668 Ford Excursion
  • P0668 Ford Expedition
  • P0668 Ford Explorer
  • P0668 Ford Explorer Sport Trac
  • P0668 Ford F-150
  • P0668 Ford F-250
  • P0668 Ford F-350
  • P0668 Ford Fiesta
  • P0668 Ford Flex
  • P0668 Ford Focus
  • P0668 Ford Focus Electric
  • P0668 Ford Freestar
  • P0668 Ford Freestyle
  • P0668 Ford Fusion
  • P0668 Ford Fusion Energi
  • P0668 Ford Fusion Hybrid
  • P0668 Ford Fusion Plug-In Hybrid
  • P0668 Ford GT
  • P0668 Ford Mustang
  • P0668 Ford Mustang Mach-E
  • P0668 Ford Mystique
  • P0668 Ford Probe
  • P0668 Ford Ranger
  • P0668 Ford Taurus
  • P0668 Ford Taurus X
  • P0668 Ford Tempo
  • P0668 Ford Thunderbird
  • P0668 Ford Transit
  • P0668 Ford Transit Connect
  • P0668 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.