P40A4

P40A4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P40A4 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford P40A4 Fault Code Meaning :

Ford P40A4 Symptoms :

Ford P40A4 Reasons :

How To Fix Ford P40A4 Trouble Code ?

Which Ford cars have the code P40A4?

  • P40A4 Ford Aerostar
  • P40A4 Ford Bronco
  • P40A4 Ford C-Max
  • P40A4 Ford C-Max Energi
  • P40A4 Ford C-Max Hybrid
  • P40A4 Ford Contour
  • P40A4 Ford Crown Victoria
  • P40A4 Ford EcoSport
  • P40A4 Ford Econoline
  • P40A4 Ford Edge
  • P40A4 Ford Escape
  • P40A4 Ford Escape Hybrid
  • P40A4 Ford Escort
  • P40A4 Ford Everest
  • P40A4 Ford Excursion
  • P40A4 Ford Expedition
  • P40A4 Ford Explorer
  • P40A4 Ford Explorer Sport Trac
  • P40A4 Ford F-150
  • P40A4 Ford F-250
  • P40A4 Ford F-350
  • P40A4 Ford Fiesta
  • P40A4 Ford Flex
  • P40A4 Ford Focus
  • P40A4 Ford Focus Electric
  • P40A4 Ford Freestar
  • P40A4 Ford Freestyle
  • P40A4 Ford Fusion
  • P40A4 Ford Fusion Energi
  • P40A4 Ford Fusion Hybrid
  • P40A4 Ford Fusion Plug-In Hybrid
  • P40A4 Ford GT
  • P40A4 Ford Mustang
  • P40A4 Ford Mustang Mach-E
  • P40A4 Ford Mystique
  • P40A4 Ford Probe
  • P40A4 Ford Ranger
  • P40A4 Ford Taurus
  • P40A4 Ford Taurus X
  • P40A4 Ford Tempo
  • P40A4 Ford Thunderbird
  • P40A4 Ford Transit
  • P40A4 Ford Transit Connect
  • P40A4 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.