B1678

B1678 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B1678 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 supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford B1678 Fault Code Meaning :

Ford B1678 Symptoms :

Ford B1678 Reasons :

How To Fix Ford B1678 Trouble Code ?

Which Ford cars have the code B1678?

  • B1678 Ford Aerostar
  • B1678 Ford Bronco
  • B1678 Ford C-Max
  • B1678 Ford C-Max Energi
  • B1678 Ford C-Max Hybrid
  • B1678 Ford Contour
  • B1678 Ford Crown Victoria
  • B1678 Ford EcoSport
  • B1678 Ford Econoline
  • B1678 Ford Edge
  • B1678 Ford Escape
  • B1678 Ford Escape Hybrid
  • B1678 Ford Escort
  • B1678 Ford Everest
  • B1678 Ford Excursion
  • B1678 Ford Expedition
  • B1678 Ford Explorer
  • B1678 Ford Explorer Sport Trac
  • B1678 Ford F-150
  • B1678 Ford F-250
  • B1678 Ford F-350
  • B1678 Ford Fiesta
  • B1678 Ford Flex
  • B1678 Ford Focus
  • B1678 Ford Focus Electric
  • B1678 Ford Freestar
  • B1678 Ford Freestyle
  • B1678 Ford Fusion
  • B1678 Ford Fusion Energi
  • B1678 Ford Fusion Hybrid
  • B1678 Ford Fusion Plug-In Hybrid
  • B1678 Ford GT
  • B1678 Ford Mustang
  • B1678 Ford Mustang Mach-E
  • B1678 Ford Mystique
  • B1678 Ford Probe
  • B1678 Ford Ranger
  • B1678 Ford Taurus
  • B1678 Ford Taurus X
  • B1678 Ford Tempo
  • B1678 Ford Thunderbird
  • B1678 Ford Transit
  • B1678 Ford Transit Connect
  • B1678 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.