P0040

P0040 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0040 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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 P0040 Fault Code Meaning :

Ford P0040 Symptoms :

Ford P0040 Reasons :

How To Fix Ford P0040 Trouble Code ?

Which Ford cars have the code P0040?

  • P0040 Ford Aerostar
  • P0040 Ford Bronco
  • P0040 Ford C-Max
  • P0040 Ford C-Max Energi
  • P0040 Ford C-Max Hybrid
  • P0040 Ford Contour
  • P0040 Ford Crown Victoria
  • P0040 Ford EcoSport
  • P0040 Ford Econoline
  • P0040 Ford Edge
  • P0040 Ford Escape
  • P0040 Ford Escape Hybrid
  • P0040 Ford Escort
  • P0040 Ford Everest
  • P0040 Ford Excursion
  • P0040 Ford Expedition
  • P0040 Ford Explorer
  • P0040 Ford Explorer Sport Trac
  • P0040 Ford F-150
  • P0040 Ford F-250
  • P0040 Ford F-350
  • P0040 Ford Fiesta
  • P0040 Ford Flex
  • P0040 Ford Focus
  • P0040 Ford Focus Electric
  • P0040 Ford Freestar
  • P0040 Ford Freestyle
  • P0040 Ford Fusion
  • P0040 Ford Fusion Energi
  • P0040 Ford Fusion Hybrid
  • P0040 Ford Fusion Plug-In Hybrid
  • P0040 Ford GT
  • P0040 Ford Mustang
  • P0040 Ford Mustang Mach-E
  • P0040 Ford Mystique
  • P0040 Ford Probe
  • P0040 Ford Ranger
  • P0040 Ford Taurus
  • P0040 Ford Taurus X
  • P0040 Ford Tempo
  • P0040 Ford Thunderbird
  • P0040 Ford Transit
  • P0040 Ford Transit Connect
  • P0040 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.