P5A21

P5A21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P5A21 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 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 P5A21 Fault Code Meaning :

Ford P5A21 Symptoms :

Ford P5A21 Reasons :

How To Fix Ford P5A21 Trouble Code ?

Which Ford cars have the code P5A21?

  • P5A21 Ford Aerostar
  • P5A21 Ford Bronco
  • P5A21 Ford C-Max
  • P5A21 Ford C-Max Energi
  • P5A21 Ford C-Max Hybrid
  • P5A21 Ford Contour
  • P5A21 Ford Crown Victoria
  • P5A21 Ford EcoSport
  • P5A21 Ford Econoline
  • P5A21 Ford Edge
  • P5A21 Ford Escape
  • P5A21 Ford Escape Hybrid
  • P5A21 Ford Escort
  • P5A21 Ford Everest
  • P5A21 Ford Excursion
  • P5A21 Ford Expedition
  • P5A21 Ford Explorer
  • P5A21 Ford Explorer Sport Trac
  • P5A21 Ford F-150
  • P5A21 Ford F-250
  • P5A21 Ford F-350
  • P5A21 Ford Fiesta
  • P5A21 Ford Flex
  • P5A21 Ford Focus
  • P5A21 Ford Focus Electric
  • P5A21 Ford Freestar
  • P5A21 Ford Freestyle
  • P5A21 Ford Fusion
  • P5A21 Ford Fusion Energi
  • P5A21 Ford Fusion Hybrid
  • P5A21 Ford Fusion Plug-In Hybrid
  • P5A21 Ford GT
  • P5A21 Ford Mustang
  • P5A21 Ford Mustang Mach-E
  • P5A21 Ford Mystique
  • P5A21 Ford Probe
  • P5A21 Ford Ranger
  • P5A21 Ford Taurus
  • P5A21 Ford Taurus X
  • P5A21 Ford Tempo
  • P5A21 Ford Thunderbird
  • P5A21 Ford Transit
  • P5A21 Ford Transit Connect
  • P5A21 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.