P71A4

P71A4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P71A4 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 P71A4 Fault Code Meaning :

Ford P71A4 Symptoms :

Ford P71A4 Reasons :

How To Fix Ford P71A4 Trouble Code ?

Which Ford cars have the code P71A4?

  • P71A4 Ford Aerostar
  • P71A4 Ford Bronco
  • P71A4 Ford C-Max
  • P71A4 Ford C-Max Energi
  • P71A4 Ford C-Max Hybrid
  • P71A4 Ford Contour
  • P71A4 Ford Crown Victoria
  • P71A4 Ford EcoSport
  • P71A4 Ford Econoline
  • P71A4 Ford Edge
  • P71A4 Ford Escape
  • P71A4 Ford Escape Hybrid
  • P71A4 Ford Escort
  • P71A4 Ford Everest
  • P71A4 Ford Excursion
  • P71A4 Ford Expedition
  • P71A4 Ford Explorer
  • P71A4 Ford Explorer Sport Trac
  • P71A4 Ford F-150
  • P71A4 Ford F-250
  • P71A4 Ford F-350
  • P71A4 Ford Fiesta
  • P71A4 Ford Flex
  • P71A4 Ford Focus
  • P71A4 Ford Focus Electric
  • P71A4 Ford Freestar
  • P71A4 Ford Freestyle
  • P71A4 Ford Fusion
  • P71A4 Ford Fusion Energi
  • P71A4 Ford Fusion Hybrid
  • P71A4 Ford Fusion Plug-In Hybrid
  • P71A4 Ford GT
  • P71A4 Ford Mustang
  • P71A4 Ford Mustang Mach-E
  • P71A4 Ford Mystique
  • P71A4 Ford Probe
  • P71A4 Ford Ranger
  • P71A4 Ford Taurus
  • P71A4 Ford Taurus X
  • P71A4 Ford Tempo
  • P71A4 Ford Thunderbird
  • P71A4 Ford Transit
  • P71A4 Ford Transit Connect
  • P71A4 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.