C0521

C0521 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0521 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 C0521 Fault Code Meaning :

Ford C0521 Symptoms :

Ford C0521 Reasons :

How To Fix Ford C0521 Trouble Code ?

Which Ford cars have the code C0521?

  • C0521 Ford Aerostar
  • C0521 Ford Bronco
  • C0521 Ford C-Max
  • C0521 Ford C-Max Energi
  • C0521 Ford C-Max Hybrid
  • C0521 Ford Contour
  • C0521 Ford Crown Victoria
  • C0521 Ford EcoSport
  • C0521 Ford Econoline
  • C0521 Ford Edge
  • C0521 Ford Escape
  • C0521 Ford Escape Hybrid
  • C0521 Ford Escort
  • C0521 Ford Everest
  • C0521 Ford Excursion
  • C0521 Ford Expedition
  • C0521 Ford Explorer
  • C0521 Ford Explorer Sport Trac
  • C0521 Ford F-150
  • C0521 Ford F-250
  • C0521 Ford F-350
  • C0521 Ford Fiesta
  • C0521 Ford Flex
  • C0521 Ford Focus
  • C0521 Ford Focus Electric
  • C0521 Ford Freestar
  • C0521 Ford Freestyle
  • C0521 Ford Fusion
  • C0521 Ford Fusion Energi
  • C0521 Ford Fusion Hybrid
  • C0521 Ford Fusion Plug-In Hybrid
  • C0521 Ford GT
  • C0521 Ford Mustang
  • C0521 Ford Mustang Mach-E
  • C0521 Ford Mystique
  • C0521 Ford Probe
  • C0521 Ford Ranger
  • C0521 Ford Taurus
  • C0521 Ford Taurus X
  • C0521 Ford Tempo
  • C0521 Ford Thunderbird
  • C0521 Ford Transit
  • C0521 Ford Transit Connect
  • C0521 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.