P3942

P3942 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3942 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 P3942 Fault Code Meaning :

Ford P3942 Symptoms :

Ford P3942 Reasons :

How To Fix Ford P3942 Trouble Code ?

Which Ford cars have the code P3942?

  • P3942 Ford Aerostar
  • P3942 Ford Bronco
  • P3942 Ford C-Max
  • P3942 Ford C-Max Energi
  • P3942 Ford C-Max Hybrid
  • P3942 Ford Contour
  • P3942 Ford Crown Victoria
  • P3942 Ford EcoSport
  • P3942 Ford Econoline
  • P3942 Ford Edge
  • P3942 Ford Escape
  • P3942 Ford Escape Hybrid
  • P3942 Ford Escort
  • P3942 Ford Everest
  • P3942 Ford Excursion
  • P3942 Ford Expedition
  • P3942 Ford Explorer
  • P3942 Ford Explorer Sport Trac
  • P3942 Ford F-150
  • P3942 Ford F-250
  • P3942 Ford F-350
  • P3942 Ford Fiesta
  • P3942 Ford Flex
  • P3942 Ford Focus
  • P3942 Ford Focus Electric
  • P3942 Ford Freestar
  • P3942 Ford Freestyle
  • P3942 Ford Fusion
  • P3942 Ford Fusion Energi
  • P3942 Ford Fusion Hybrid
  • P3942 Ford Fusion Plug-In Hybrid
  • P3942 Ford GT
  • P3942 Ford Mustang
  • P3942 Ford Mustang Mach-E
  • P3942 Ford Mystique
  • P3942 Ford Probe
  • P3942 Ford Ranger
  • P3942 Ford Taurus
  • P3942 Ford Taurus X
  • P3942 Ford Tempo
  • P3942 Ford Thunderbird
  • P3942 Ford Transit
  • P3942 Ford Transit Connect
  • P3942 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.