C1821

C1821 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1821 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 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.

Engine starting is disabled and other optional functions may be interrupted until the fault is corrected and the ignition switch is cycled.

Ford C1821 Fault Code Meaning :

Ford C1821 Symptoms :

Ford C1821 Reasons :

How To Fix Ford C1821 Trouble Code ?

Which Ford cars have the code C1821?

  • C1821 Ford Aerostar
  • C1821 Ford Bronco
  • C1821 Ford C-Max
  • C1821 Ford C-Max Energi
  • C1821 Ford C-Max Hybrid
  • C1821 Ford Contour
  • C1821 Ford Crown Victoria
  • C1821 Ford EcoSport
  • C1821 Ford Econoline
  • C1821 Ford Edge
  • C1821 Ford Escape
  • C1821 Ford Escape Hybrid
  • C1821 Ford Escort
  • C1821 Ford Everest
  • C1821 Ford Excursion
  • C1821 Ford Expedition
  • C1821 Ford Explorer
  • C1821 Ford Explorer Sport Trac
  • C1821 Ford F-150
  • C1821 Ford F-250
  • C1821 Ford F-350
  • C1821 Ford Fiesta
  • C1821 Ford Flex
  • C1821 Ford Focus
  • C1821 Ford Focus Electric
  • C1821 Ford Freestar
  • C1821 Ford Freestyle
  • C1821 Ford Fusion
  • C1821 Ford Fusion Energi
  • C1821 Ford Fusion Hybrid
  • C1821 Ford Fusion Plug-In Hybrid
  • C1821 Ford GT
  • C1821 Ford Mustang
  • C1821 Ford Mustang Mach-E
  • C1821 Ford Mystique
  • C1821 Ford Probe
  • C1821 Ford Ranger
  • C1821 Ford Taurus
  • C1821 Ford Taurus X
  • C1821 Ford Tempo
  • C1821 Ford Thunderbird
  • C1821 Ford Transit
  • C1821 Ford Transit Connect
  • C1821 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.