P3821

P3821 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3821 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 top-of-clutch switch and bottom-of-clutch switch are both measured as closed at the same time. Troubleshoot for clutch switch shorted, or for a wiring fault between the clutch switch and the BHM.

Ford P3821 Fault Code Meaning :

Ford P3821 Symptoms :

Ford P3821 Reasons :

How To Fix Ford P3821 Trouble Code ?

Which Ford cars have the code P3821?

  • P3821 Ford Aerostar
  • P3821 Ford Bronco
  • P3821 Ford C-Max
  • P3821 Ford C-Max Energi
  • P3821 Ford C-Max Hybrid
  • P3821 Ford Contour
  • P3821 Ford Crown Victoria
  • P3821 Ford EcoSport
  • P3821 Ford Econoline
  • P3821 Ford Edge
  • P3821 Ford Escape
  • P3821 Ford Escape Hybrid
  • P3821 Ford Escort
  • P3821 Ford Everest
  • P3821 Ford Excursion
  • P3821 Ford Expedition
  • P3821 Ford Explorer
  • P3821 Ford Explorer Sport Trac
  • P3821 Ford F-150
  • P3821 Ford F-250
  • P3821 Ford F-350
  • P3821 Ford Fiesta
  • P3821 Ford Flex
  • P3821 Ford Focus
  • P3821 Ford Focus Electric
  • P3821 Ford Freestar
  • P3821 Ford Freestyle
  • P3821 Ford Fusion
  • P3821 Ford Fusion Energi
  • P3821 Ford Fusion Hybrid
  • P3821 Ford Fusion Plug-In Hybrid
  • P3821 Ford GT
  • P3821 Ford Mustang
  • P3821 Ford Mustang Mach-E
  • P3821 Ford Mystique
  • P3821 Ford Probe
  • P3821 Ford Ranger
  • P3821 Ford Taurus
  • P3821 Ford Taurus X
  • P3821 Ford Tempo
  • P3821 Ford Thunderbird
  • P3821 Ford Transit
  • P3821 Ford Transit Connect
  • P3821 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.