P420B

P420B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P420B Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 P420B Fault Code Meaning :

Ford P420B Symptoms :

Ford P420B Reasons :

How To Fix Ford P420B Trouble Code ?

Which Ford cars have the code P420B?

  • P420B Ford Aerostar
  • P420B Ford Bronco
  • P420B Ford C-Max
  • P420B Ford C-Max Energi
  • P420B Ford C-Max Hybrid
  • P420B Ford Contour
  • P420B Ford Crown Victoria
  • P420B Ford EcoSport
  • P420B Ford Econoline
  • P420B Ford Edge
  • P420B Ford Escape
  • P420B Ford Escape Hybrid
  • P420B Ford Escort
  • P420B Ford Everest
  • P420B Ford Excursion
  • P420B Ford Expedition
  • P420B Ford Explorer
  • P420B Ford Explorer Sport Trac
  • P420B Ford F-150
  • P420B Ford F-250
  • P420B Ford F-350
  • P420B Ford Fiesta
  • P420B Ford Flex
  • P420B Ford Focus
  • P420B Ford Focus Electric
  • P420B Ford Freestar
  • P420B Ford Freestyle
  • P420B Ford Fusion
  • P420B Ford Fusion Energi
  • P420B Ford Fusion Hybrid
  • P420B Ford Fusion Plug-In Hybrid
  • P420B Ford GT
  • P420B Ford Mustang
  • P420B Ford Mustang Mach-E
  • P420B Ford Mystique
  • P420B Ford Probe
  • P420B Ford Ranger
  • P420B Ford Taurus
  • P420B Ford Taurus X
  • P420B Ford Tempo
  • P420B Ford Thunderbird
  • P420B Ford Transit
  • P420B Ford Transit Connect
  • P420B 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.