B0540

B0540 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B0540 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.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 B0540 Fault Code Meaning :

Ford B0540 Symptoms :

Ford B0540 Reasons :

How To Fix Ford B0540 Trouble Code ?

Which Ford cars have the code B0540?

  • B0540 Ford Aerostar
  • B0540 Ford Bronco
  • B0540 Ford C-Max
  • B0540 Ford C-Max Energi
  • B0540 Ford C-Max Hybrid
  • B0540 Ford Contour
  • B0540 Ford Crown Victoria
  • B0540 Ford EcoSport
  • B0540 Ford Econoline
  • B0540 Ford Edge
  • B0540 Ford Escape
  • B0540 Ford Escape Hybrid
  • B0540 Ford Escort
  • B0540 Ford Everest
  • B0540 Ford Excursion
  • B0540 Ford Expedition
  • B0540 Ford Explorer
  • B0540 Ford Explorer Sport Trac
  • B0540 Ford F-150
  • B0540 Ford F-250
  • B0540 Ford F-350
  • B0540 Ford Fiesta
  • B0540 Ford Flex
  • B0540 Ford Focus
  • B0540 Ford Focus Electric
  • B0540 Ford Freestar
  • B0540 Ford Freestyle
  • B0540 Ford Fusion
  • B0540 Ford Fusion Energi
  • B0540 Ford Fusion Hybrid
  • B0540 Ford Fusion Plug-In Hybrid
  • B0540 Ford GT
  • B0540 Ford Mustang
  • B0540 Ford Mustang Mach-E
  • B0540 Ford Mystique
  • B0540 Ford Probe
  • B0540 Ford Ranger
  • B0540 Ford Taurus
  • B0540 Ford Taurus X
  • B0540 Ford Tempo
  • B0540 Ford Thunderbird
  • B0540 Ford Transit
  • B0540 Ford Transit Connect
  • B0540 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.