B1621

B1621 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B1621 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 B1621 Fault Code Meaning :

Ford B1621 Symptoms :

Ford B1621 Reasons :

How To Fix Ford B1621 Trouble Code ?

Which Ford cars have the code B1621?

  • B1621 Ford Aerostar
  • B1621 Ford Bronco
  • B1621 Ford C-Max
  • B1621 Ford C-Max Energi
  • B1621 Ford C-Max Hybrid
  • B1621 Ford Contour
  • B1621 Ford Crown Victoria
  • B1621 Ford EcoSport
  • B1621 Ford Econoline
  • B1621 Ford Edge
  • B1621 Ford Escape
  • B1621 Ford Escape Hybrid
  • B1621 Ford Escort
  • B1621 Ford Everest
  • B1621 Ford Excursion
  • B1621 Ford Expedition
  • B1621 Ford Explorer
  • B1621 Ford Explorer Sport Trac
  • B1621 Ford F-150
  • B1621 Ford F-250
  • B1621 Ford F-350
  • B1621 Ford Fiesta
  • B1621 Ford Flex
  • B1621 Ford Focus
  • B1621 Ford Focus Electric
  • B1621 Ford Freestar
  • B1621 Ford Freestyle
  • B1621 Ford Fusion
  • B1621 Ford Fusion Energi
  • B1621 Ford Fusion Hybrid
  • B1621 Ford Fusion Plug-In Hybrid
  • B1621 Ford GT
  • B1621 Ford Mustang
  • B1621 Ford Mustang Mach-E
  • B1621 Ford Mystique
  • B1621 Ford Probe
  • B1621 Ford Ranger
  • B1621 Ford Taurus
  • B1621 Ford Taurus X
  • B1621 Ford Tempo
  • B1621 Ford Thunderbird
  • B1621 Ford Transit
  • B1621 Ford Transit Connect
  • B1621 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.