P3646

P3646 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3646 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 P3646 Fault Code Meaning :

Ford P3646 Symptoms :

Ford P3646 Reasons :

How To Fix Ford P3646 Trouble Code ?

Which Ford cars have the code P3646?

  • P3646 Ford Aerostar
  • P3646 Ford Bronco
  • P3646 Ford C-Max
  • P3646 Ford C-Max Energi
  • P3646 Ford C-Max Hybrid
  • P3646 Ford Contour
  • P3646 Ford Crown Victoria
  • P3646 Ford EcoSport
  • P3646 Ford Econoline
  • P3646 Ford Edge
  • P3646 Ford Escape
  • P3646 Ford Escape Hybrid
  • P3646 Ford Escort
  • P3646 Ford Everest
  • P3646 Ford Excursion
  • P3646 Ford Expedition
  • P3646 Ford Explorer
  • P3646 Ford Explorer Sport Trac
  • P3646 Ford F-150
  • P3646 Ford F-250
  • P3646 Ford F-350
  • P3646 Ford Fiesta
  • P3646 Ford Flex
  • P3646 Ford Focus
  • P3646 Ford Focus Electric
  • P3646 Ford Freestar
  • P3646 Ford Freestyle
  • P3646 Ford Fusion
  • P3646 Ford Fusion Energi
  • P3646 Ford Fusion Hybrid
  • P3646 Ford Fusion Plug-In Hybrid
  • P3646 Ford GT
  • P3646 Ford Mustang
  • P3646 Ford Mustang Mach-E
  • P3646 Ford Mystique
  • P3646 Ford Probe
  • P3646 Ford Ranger
  • P3646 Ford Taurus
  • P3646 Ford Taurus X
  • P3646 Ford Tempo
  • P3646 Ford Thunderbird
  • P3646 Ford Transit
  • P3646 Ford Transit Connect
  • P3646 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.