P4A79

P4A79 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P4A79 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 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 P4A79 Fault Code Meaning :

Ford P4A79 Symptoms :

Ford P4A79 Reasons :

How To Fix Ford P4A79 Trouble Code ?

Which Ford cars have the code P4A79?

  • P4A79 Ford Aerostar
  • P4A79 Ford Bronco
  • P4A79 Ford C-Max
  • P4A79 Ford C-Max Energi
  • P4A79 Ford C-Max Hybrid
  • P4A79 Ford Contour
  • P4A79 Ford Crown Victoria
  • P4A79 Ford EcoSport
  • P4A79 Ford Econoline
  • P4A79 Ford Edge
  • P4A79 Ford Escape
  • P4A79 Ford Escape Hybrid
  • P4A79 Ford Escort
  • P4A79 Ford Everest
  • P4A79 Ford Excursion
  • P4A79 Ford Expedition
  • P4A79 Ford Explorer
  • P4A79 Ford Explorer Sport Trac
  • P4A79 Ford F-150
  • P4A79 Ford F-250
  • P4A79 Ford F-350
  • P4A79 Ford Fiesta
  • P4A79 Ford Flex
  • P4A79 Ford Focus
  • P4A79 Ford Focus Electric
  • P4A79 Ford Freestar
  • P4A79 Ford Freestyle
  • P4A79 Ford Fusion
  • P4A79 Ford Fusion Energi
  • P4A79 Ford Fusion Hybrid
  • P4A79 Ford Fusion Plug-In Hybrid
  • P4A79 Ford GT
  • P4A79 Ford Mustang
  • P4A79 Ford Mustang Mach-E
  • P4A79 Ford Mystique
  • P4A79 Ford Probe
  • P4A79 Ford Ranger
  • P4A79 Ford Taurus
  • P4A79 Ford Taurus X
  • P4A79 Ford Tempo
  • P4A79 Ford Thunderbird
  • P4A79 Ford Transit
  • P4A79 Ford Transit Connect
  • P4A79 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.