P3856

P3856 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3856 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 P3856 Fault Code Meaning :

Ford P3856 Symptoms :

Ford P3856 Reasons :

How To Fix Ford P3856 Trouble Code ?

Which Ford cars have the code P3856?

  • P3856 Ford Aerostar
  • P3856 Ford Bronco
  • P3856 Ford C-Max
  • P3856 Ford C-Max Energi
  • P3856 Ford C-Max Hybrid
  • P3856 Ford Contour
  • P3856 Ford Crown Victoria
  • P3856 Ford EcoSport
  • P3856 Ford Econoline
  • P3856 Ford Edge
  • P3856 Ford Escape
  • P3856 Ford Escape Hybrid
  • P3856 Ford Escort
  • P3856 Ford Everest
  • P3856 Ford Excursion
  • P3856 Ford Expedition
  • P3856 Ford Explorer
  • P3856 Ford Explorer Sport Trac
  • P3856 Ford F-150
  • P3856 Ford F-250
  • P3856 Ford F-350
  • P3856 Ford Fiesta
  • P3856 Ford Flex
  • P3856 Ford Focus
  • P3856 Ford Focus Electric
  • P3856 Ford Freestar
  • P3856 Ford Freestyle
  • P3856 Ford Fusion
  • P3856 Ford Fusion Energi
  • P3856 Ford Fusion Hybrid
  • P3856 Ford Fusion Plug-In Hybrid
  • P3856 Ford GT
  • P3856 Ford Mustang
  • P3856 Ford Mustang Mach-E
  • P3856 Ford Mystique
  • P3856 Ford Probe
  • P3856 Ford Ranger
  • P3856 Ford Taurus
  • P3856 Ford Taurus X
  • P3856 Ford Tempo
  • P3856 Ford Thunderbird
  • P3856 Ford Transit
  • P3856 Ford Transit Connect
  • P3856 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.