P278B

P278B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P278B 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 P278B Fault Code Meaning :

Ford P278B Symptoms :

Ford P278B Reasons :

How To Fix Ford P278B Trouble Code ?

Which Ford cars have the code P278B?

  • P278B Ford Aerostar
  • P278B Ford Bronco
  • P278B Ford C-Max
  • P278B Ford C-Max Energi
  • P278B Ford C-Max Hybrid
  • P278B Ford Contour
  • P278B Ford Crown Victoria
  • P278B Ford EcoSport
  • P278B Ford Econoline
  • P278B Ford Edge
  • P278B Ford Escape
  • P278B Ford Escape Hybrid
  • P278B Ford Escort
  • P278B Ford Everest
  • P278B Ford Excursion
  • P278B Ford Expedition
  • P278B Ford Explorer
  • P278B Ford Explorer Sport Trac
  • P278B Ford F-150
  • P278B Ford F-250
  • P278B Ford F-350
  • P278B Ford Fiesta
  • P278B Ford Flex
  • P278B Ford Focus
  • P278B Ford Focus Electric
  • P278B Ford Freestar
  • P278B Ford Freestyle
  • P278B Ford Fusion
  • P278B Ford Fusion Energi
  • P278B Ford Fusion Hybrid
  • P278B Ford Fusion Plug-In Hybrid
  • P278B Ford GT
  • P278B Ford Mustang
  • P278B Ford Mustang Mach-E
  • P278B Ford Mystique
  • P278B Ford Probe
  • P278B Ford Ranger
  • P278B Ford Taurus
  • P278B Ford Taurus X
  • P278B Ford Tempo
  • P278B Ford Thunderbird
  • P278B Ford Transit
  • P278B Ford Transit Connect
  • P278B 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.