P3420

P3420 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3420 Diagnosis

The CHM does not suupport PWM type DRLs. The vehicle has a BHM mismatch with the CHM. Replace the CHM with one that is compatible with the BHM.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford P3420 Fault Code Meaning :

Ford P3420 Symptoms :

Ford P3420 Reasons :

How To Fix Ford P3420 Trouble Code ?

Which Ford cars have the code P3420?

  • P3420 Ford Aerostar
  • P3420 Ford Bronco
  • P3420 Ford C-Max
  • P3420 Ford C-Max Energi
  • P3420 Ford C-Max Hybrid
  • P3420 Ford Contour
  • P3420 Ford Crown Victoria
  • P3420 Ford EcoSport
  • P3420 Ford Econoline
  • P3420 Ford Edge
  • P3420 Ford Escape
  • P3420 Ford Escape Hybrid
  • P3420 Ford Escort
  • P3420 Ford Everest
  • P3420 Ford Excursion
  • P3420 Ford Expedition
  • P3420 Ford Explorer
  • P3420 Ford Explorer Sport Trac
  • P3420 Ford F-150
  • P3420 Ford F-250
  • P3420 Ford F-350
  • P3420 Ford Fiesta
  • P3420 Ford Flex
  • P3420 Ford Focus
  • P3420 Ford Focus Electric
  • P3420 Ford Freestar
  • P3420 Ford Freestyle
  • P3420 Ford Fusion
  • P3420 Ford Fusion Energi
  • P3420 Ford Fusion Hybrid
  • P3420 Ford Fusion Plug-In Hybrid
  • P3420 Ford GT
  • P3420 Ford Mustang
  • P3420 Ford Mustang Mach-E
  • P3420 Ford Mystique
  • P3420 Ford Probe
  • P3420 Ford Ranger
  • P3420 Ford Taurus
  • P3420 Ford Taurus X
  • P3420 Ford Tempo
  • P3420 Ford Thunderbird
  • P3420 Ford Transit
  • P3420 Ford Transit Connect
  • P3420 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.