P3643

P3643 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3643 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 P3643 Fault Code Meaning :

Ford P3643 Symptoms :

Ford P3643 Reasons :

How To Fix Ford P3643 Trouble Code ?

Which Ford cars have the code P3643?

  • P3643 Ford Aerostar
  • P3643 Ford Bronco
  • P3643 Ford C-Max
  • P3643 Ford C-Max Energi
  • P3643 Ford C-Max Hybrid
  • P3643 Ford Contour
  • P3643 Ford Crown Victoria
  • P3643 Ford EcoSport
  • P3643 Ford Econoline
  • P3643 Ford Edge
  • P3643 Ford Escape
  • P3643 Ford Escape Hybrid
  • P3643 Ford Escort
  • P3643 Ford Everest
  • P3643 Ford Excursion
  • P3643 Ford Expedition
  • P3643 Ford Explorer
  • P3643 Ford Explorer Sport Trac
  • P3643 Ford F-150
  • P3643 Ford F-250
  • P3643 Ford F-350
  • P3643 Ford Fiesta
  • P3643 Ford Flex
  • P3643 Ford Focus
  • P3643 Ford Focus Electric
  • P3643 Ford Freestar
  • P3643 Ford Freestyle
  • P3643 Ford Fusion
  • P3643 Ford Fusion Energi
  • P3643 Ford Fusion Hybrid
  • P3643 Ford Fusion Plug-In Hybrid
  • P3643 Ford GT
  • P3643 Ford Mustang
  • P3643 Ford Mustang Mach-E
  • P3643 Ford Mystique
  • P3643 Ford Probe
  • P3643 Ford Ranger
  • P3643 Ford Taurus
  • P3643 Ford Taurus X
  • P3643 Ford Tempo
  • P3643 Ford Thunderbird
  • P3643 Ford Transit
  • P3643 Ford Transit Connect
  • P3643 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.