C1621

C1621 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1621 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The BHM is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford C1621 Fault Code Meaning :

Ford C1621 Symptoms :

Ford C1621 Reasons :

How To Fix Ford C1621 Trouble Code ?

Which Ford cars have the code C1621?

  • C1621 Ford Aerostar
  • C1621 Ford Bronco
  • C1621 Ford C-Max
  • C1621 Ford C-Max Energi
  • C1621 Ford C-Max Hybrid
  • C1621 Ford Contour
  • C1621 Ford Crown Victoria
  • C1621 Ford EcoSport
  • C1621 Ford Econoline
  • C1621 Ford Edge
  • C1621 Ford Escape
  • C1621 Ford Escape Hybrid
  • C1621 Ford Escort
  • C1621 Ford Everest
  • C1621 Ford Excursion
  • C1621 Ford Expedition
  • C1621 Ford Explorer
  • C1621 Ford Explorer Sport Trac
  • C1621 Ford F-150
  • C1621 Ford F-250
  • C1621 Ford F-350
  • C1621 Ford Fiesta
  • C1621 Ford Flex
  • C1621 Ford Focus
  • C1621 Ford Focus Electric
  • C1621 Ford Freestar
  • C1621 Ford Freestyle
  • C1621 Ford Fusion
  • C1621 Ford Fusion Energi
  • C1621 Ford Fusion Hybrid
  • C1621 Ford Fusion Plug-In Hybrid
  • C1621 Ford GT
  • C1621 Ford Mustang
  • C1621 Ford Mustang Mach-E
  • C1621 Ford Mystique
  • C1621 Ford Probe
  • C1621 Ford Ranger
  • C1621 Ford Taurus
  • C1621 Ford Taurus X
  • C1621 Ford Tempo
  • C1621 Ford Thunderbird
  • C1621 Ford Transit
  • C1621 Ford Transit Connect
  • C1621 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.