P420A

P420A Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P420A Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford P420A Fault Code Meaning :

Ford P420A Symptoms :

Ford P420A Reasons :

How To Fix Ford P420A Trouble Code ?

Which Ford cars have the code P420A?

  • P420A Ford Aerostar
  • P420A Ford Bronco
  • P420A Ford C-Max
  • P420A Ford C-Max Energi
  • P420A Ford C-Max Hybrid
  • P420A Ford Contour
  • P420A Ford Crown Victoria
  • P420A Ford EcoSport
  • P420A Ford Econoline
  • P420A Ford Edge
  • P420A Ford Escape
  • P420A Ford Escape Hybrid
  • P420A Ford Escort
  • P420A Ford Everest
  • P420A Ford Excursion
  • P420A Ford Expedition
  • P420A Ford Explorer
  • P420A Ford Explorer Sport Trac
  • P420A Ford F-150
  • P420A Ford F-250
  • P420A Ford F-350
  • P420A Ford Fiesta
  • P420A Ford Flex
  • P420A Ford Focus
  • P420A Ford Focus Electric
  • P420A Ford Freestar
  • P420A Ford Freestyle
  • P420A Ford Fusion
  • P420A Ford Fusion Energi
  • P420A Ford Fusion Hybrid
  • P420A Ford Fusion Plug-In Hybrid
  • P420A Ford GT
  • P420A Ford Mustang
  • P420A Ford Mustang Mach-E
  • P420A Ford Mystique
  • P420A Ford Probe
  • P420A Ford Ranger
  • P420A Ford Taurus
  • P420A Ford Taurus X
  • P420A Ford Tempo
  • P420A Ford Thunderbird
  • P420A Ford Transit
  • P420A Ford Transit Connect
  • P420A 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.