P21D8

P21D8 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P21D8 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.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford P21D8 Fault Code Meaning :

Ford P21D8 Symptoms :

Ford P21D8 Reasons :

How To Fix Ford P21D8 Trouble Code ?

Which Ford cars have the code P21D8?

  • P21D8 Ford Aerostar
  • P21D8 Ford Bronco
  • P21D8 Ford C-Max
  • P21D8 Ford C-Max Energi
  • P21D8 Ford C-Max Hybrid
  • P21D8 Ford Contour
  • P21D8 Ford Crown Victoria
  • P21D8 Ford EcoSport
  • P21D8 Ford Econoline
  • P21D8 Ford Edge
  • P21D8 Ford Escape
  • P21D8 Ford Escape Hybrid
  • P21D8 Ford Escort
  • P21D8 Ford Everest
  • P21D8 Ford Excursion
  • P21D8 Ford Expedition
  • P21D8 Ford Explorer
  • P21D8 Ford Explorer Sport Trac
  • P21D8 Ford F-150
  • P21D8 Ford F-250
  • P21D8 Ford F-350
  • P21D8 Ford Fiesta
  • P21D8 Ford Flex
  • P21D8 Ford Focus
  • P21D8 Ford Focus Electric
  • P21D8 Ford Freestar
  • P21D8 Ford Freestyle
  • P21D8 Ford Fusion
  • P21D8 Ford Fusion Energi
  • P21D8 Ford Fusion Hybrid
  • P21D8 Ford Fusion Plug-In Hybrid
  • P21D8 Ford GT
  • P21D8 Ford Mustang
  • P21D8 Ford Mustang Mach-E
  • P21D8 Ford Mystique
  • P21D8 Ford Probe
  • P21D8 Ford Ranger
  • P21D8 Ford Taurus
  • P21D8 Ford Taurus X
  • P21D8 Ford Tempo
  • P21D8 Ford Thunderbird
  • P21D8 Ford Transit
  • P21D8 Ford Transit Connect
  • P21D8 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.