P678B

P678B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P678B Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 P678B Fault Code Meaning :

Ford P678B Symptoms :

Ford P678B Reasons :

How To Fix Ford P678B Trouble Code ?

Which Ford cars have the code P678B?

  • P678B Ford Aerostar
  • P678B Ford Bronco
  • P678B Ford C-Max
  • P678B Ford C-Max Energi
  • P678B Ford C-Max Hybrid
  • P678B Ford Contour
  • P678B Ford Crown Victoria
  • P678B Ford EcoSport
  • P678B Ford Econoline
  • P678B Ford Edge
  • P678B Ford Escape
  • P678B Ford Escape Hybrid
  • P678B Ford Escort
  • P678B Ford Everest
  • P678B Ford Excursion
  • P678B Ford Expedition
  • P678B Ford Explorer
  • P678B Ford Explorer Sport Trac
  • P678B Ford F-150
  • P678B Ford F-250
  • P678B Ford F-350
  • P678B Ford Fiesta
  • P678B Ford Flex
  • P678B Ford Focus
  • P678B Ford Focus Electric
  • P678B Ford Freestar
  • P678B Ford Freestyle
  • P678B Ford Fusion
  • P678B Ford Fusion Energi
  • P678B Ford Fusion Hybrid
  • P678B Ford Fusion Plug-In Hybrid
  • P678B Ford GT
  • P678B Ford Mustang
  • P678B Ford Mustang Mach-E
  • P678B Ford Mystique
  • P678B Ford Probe
  • P678B Ford Ranger
  • P678B Ford Taurus
  • P678B Ford Taurus X
  • P678B Ford Tempo
  • P678B Ford Thunderbird
  • P678B Ford Transit
  • P678B Ford Transit Connect
  • P678B 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.