P678A

P678A Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P678A 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 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.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P678A Fault Code Meaning :

Ford P678A Symptoms :

Ford P678A Reasons :

How To Fix Ford P678A Trouble Code ?

Which Ford cars have the code P678A?

  • P678A Ford Aerostar
  • P678A Ford Bronco
  • P678A Ford C-Max
  • P678A Ford C-Max Energi
  • P678A Ford C-Max Hybrid
  • P678A Ford Contour
  • P678A Ford Crown Victoria
  • P678A Ford EcoSport
  • P678A Ford Econoline
  • P678A Ford Edge
  • P678A Ford Escape
  • P678A Ford Escape Hybrid
  • P678A Ford Escort
  • P678A Ford Everest
  • P678A Ford Excursion
  • P678A Ford Expedition
  • P678A Ford Explorer
  • P678A Ford Explorer Sport Trac
  • P678A Ford F-150
  • P678A Ford F-250
  • P678A Ford F-350
  • P678A Ford Fiesta
  • P678A Ford Flex
  • P678A Ford Focus
  • P678A Ford Focus Electric
  • P678A Ford Freestar
  • P678A Ford Freestyle
  • P678A Ford Fusion
  • P678A Ford Fusion Energi
  • P678A Ford Fusion Hybrid
  • P678A Ford Fusion Plug-In Hybrid
  • P678A Ford GT
  • P678A Ford Mustang
  • P678A Ford Mustang Mach-E
  • P678A Ford Mystique
  • P678A Ford Probe
  • P678A Ford Ranger
  • P678A Ford Taurus
  • P678A Ford Taurus X
  • P678A Ford Tempo
  • P678A Ford Thunderbird
  • P678A Ford Transit
  • P678A Ford Transit Connect
  • P678A 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.