C3821

C3821 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3821 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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 OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford C3821 Fault Code Meaning :

Ford C3821 Symptoms :

Ford C3821 Reasons :

How To Fix Ford C3821 Trouble Code ?

Which Ford cars have the code C3821?

  • C3821 Ford Aerostar
  • C3821 Ford Bronco
  • C3821 Ford C-Max
  • C3821 Ford C-Max Energi
  • C3821 Ford C-Max Hybrid
  • C3821 Ford Contour
  • C3821 Ford Crown Victoria
  • C3821 Ford EcoSport
  • C3821 Ford Econoline
  • C3821 Ford Edge
  • C3821 Ford Escape
  • C3821 Ford Escape Hybrid
  • C3821 Ford Escort
  • C3821 Ford Everest
  • C3821 Ford Excursion
  • C3821 Ford Expedition
  • C3821 Ford Explorer
  • C3821 Ford Explorer Sport Trac
  • C3821 Ford F-150
  • C3821 Ford F-250
  • C3821 Ford F-350
  • C3821 Ford Fiesta
  • C3821 Ford Flex
  • C3821 Ford Focus
  • C3821 Ford Focus Electric
  • C3821 Ford Freestar
  • C3821 Ford Freestyle
  • C3821 Ford Fusion
  • C3821 Ford Fusion Energi
  • C3821 Ford Fusion Hybrid
  • C3821 Ford Fusion Plug-In Hybrid
  • C3821 Ford GT
  • C3821 Ford Mustang
  • C3821 Ford Mustang Mach-E
  • C3821 Ford Mystique
  • C3821 Ford Probe
  • C3821 Ford Ranger
  • C3821 Ford Taurus
  • C3821 Ford Taurus X
  • C3821 Ford Tempo
  • C3821 Ford Thunderbird
  • C3821 Ford Transit
  • C3821 Ford Transit Connect
  • C3821 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.