P4B40

P4B40 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P4B40 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 P4B40 Fault Code Meaning :

Ford P4B40 Symptoms :

Ford P4B40 Reasons :

How To Fix Ford P4B40 Trouble Code ?

Which Ford cars have the code P4B40?

  • P4B40 Ford Aerostar
  • P4B40 Ford Bronco
  • P4B40 Ford C-Max
  • P4B40 Ford C-Max Energi
  • P4B40 Ford C-Max Hybrid
  • P4B40 Ford Contour
  • P4B40 Ford Crown Victoria
  • P4B40 Ford EcoSport
  • P4B40 Ford Econoline
  • P4B40 Ford Edge
  • P4B40 Ford Escape
  • P4B40 Ford Escape Hybrid
  • P4B40 Ford Escort
  • P4B40 Ford Everest
  • P4B40 Ford Excursion
  • P4B40 Ford Expedition
  • P4B40 Ford Explorer
  • P4B40 Ford Explorer Sport Trac
  • P4B40 Ford F-150
  • P4B40 Ford F-250
  • P4B40 Ford F-350
  • P4B40 Ford Fiesta
  • P4B40 Ford Flex
  • P4B40 Ford Focus
  • P4B40 Ford Focus Electric
  • P4B40 Ford Freestar
  • P4B40 Ford Freestyle
  • P4B40 Ford Fusion
  • P4B40 Ford Fusion Energi
  • P4B40 Ford Fusion Hybrid
  • P4B40 Ford Fusion Plug-In Hybrid
  • P4B40 Ford GT
  • P4B40 Ford Mustang
  • P4B40 Ford Mustang Mach-E
  • P4B40 Ford Mystique
  • P4B40 Ford Probe
  • P4B40 Ford Ranger
  • P4B40 Ford Taurus
  • P4B40 Ford Taurus X
  • P4B40 Ford Tempo
  • P4B40 Ford Thunderbird
  • P4B40 Ford Transit
  • P4B40 Ford Transit Connect
  • P4B40 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.