P691D

P691D Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P691D 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 P691D Fault Code Meaning :

Ford P691D Symptoms :

Ford P691D Reasons :

How To Fix Ford P691D Trouble Code ?

Which Ford cars have the code P691D?

  • P691D Ford Aerostar
  • P691D Ford Bronco
  • P691D Ford C-Max
  • P691D Ford C-Max Energi
  • P691D Ford C-Max Hybrid
  • P691D Ford Contour
  • P691D Ford Crown Victoria
  • P691D Ford EcoSport
  • P691D Ford Econoline
  • P691D Ford Edge
  • P691D Ford Escape
  • P691D Ford Escape Hybrid
  • P691D Ford Escort
  • P691D Ford Everest
  • P691D Ford Excursion
  • P691D Ford Expedition
  • P691D Ford Explorer
  • P691D Ford Explorer Sport Trac
  • P691D Ford F-150
  • P691D Ford F-250
  • P691D Ford F-350
  • P691D Ford Fiesta
  • P691D Ford Flex
  • P691D Ford Focus
  • P691D Ford Focus Electric
  • P691D Ford Freestar
  • P691D Ford Freestyle
  • P691D Ford Fusion
  • P691D Ford Fusion Energi
  • P691D Ford Fusion Hybrid
  • P691D Ford Fusion Plug-In Hybrid
  • P691D Ford GT
  • P691D Ford Mustang
  • P691D Ford Mustang Mach-E
  • P691D Ford Mystique
  • P691D Ford Probe
  • P691D Ford Ranger
  • P691D Ford Taurus
  • P691D Ford Taurus X
  • P691D Ford Tempo
  • P691D Ford Thunderbird
  • P691D Ford Transit
  • P691D Ford Transit Connect
  • P691D 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.