P9F40

P9F40 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P9F40 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 FF.

The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford P9F40 Fault Code Meaning :

Ford P9F40 Symptoms :

Ford P9F40 Reasons :

How To Fix Ford P9F40 Trouble Code ?

Which Ford cars have the code P9F40?

  • P9F40 Ford Aerostar
  • P9F40 Ford Bronco
  • P9F40 Ford C-Max
  • P9F40 Ford C-Max Energi
  • P9F40 Ford C-Max Hybrid
  • P9F40 Ford Contour
  • P9F40 Ford Crown Victoria
  • P9F40 Ford EcoSport
  • P9F40 Ford Econoline
  • P9F40 Ford Edge
  • P9F40 Ford Escape
  • P9F40 Ford Escape Hybrid
  • P9F40 Ford Escort
  • P9F40 Ford Everest
  • P9F40 Ford Excursion
  • P9F40 Ford Expedition
  • P9F40 Ford Explorer
  • P9F40 Ford Explorer Sport Trac
  • P9F40 Ford F-150
  • P9F40 Ford F-250
  • P9F40 Ford F-350
  • P9F40 Ford Fiesta
  • P9F40 Ford Flex
  • P9F40 Ford Focus
  • P9F40 Ford Focus Electric
  • P9F40 Ford Freestar
  • P9F40 Ford Freestyle
  • P9F40 Ford Fusion
  • P9F40 Ford Fusion Energi
  • P9F40 Ford Fusion Hybrid
  • P9F40 Ford Fusion Plug-In Hybrid
  • P9F40 Ford GT
  • P9F40 Ford Mustang
  • P9F40 Ford Mustang Mach-E
  • P9F40 Ford Mystique
  • P9F40 Ford Probe
  • P9F40 Ford Ranger
  • P9F40 Ford Taurus
  • P9F40 Ford Taurus X
  • P9F40 Ford Tempo
  • P9F40 Ford Thunderbird
  • P9F40 Ford Transit
  • P9F40 Ford Transit Connect
  • P9F40 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.