P0178

P0178 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0178 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.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 P0178 Fault Code Meaning :

Ford P0178 Symptoms :

Ford P0178 Reasons :

How To Fix Ford P0178 Trouble Code ?

Which Ford cars have the code P0178?

  • P0178 Ford Aerostar
  • P0178 Ford Bronco
  • P0178 Ford C-Max
  • P0178 Ford C-Max Energi
  • P0178 Ford C-Max Hybrid
  • P0178 Ford Contour
  • P0178 Ford Crown Victoria
  • P0178 Ford EcoSport
  • P0178 Ford Econoline
  • P0178 Ford Edge
  • P0178 Ford Escape
  • P0178 Ford Escape Hybrid
  • P0178 Ford Escort
  • P0178 Ford Everest
  • P0178 Ford Excursion
  • P0178 Ford Expedition
  • P0178 Ford Explorer
  • P0178 Ford Explorer Sport Trac
  • P0178 Ford F-150
  • P0178 Ford F-250
  • P0178 Ford F-350
  • P0178 Ford Fiesta
  • P0178 Ford Flex
  • P0178 Ford Focus
  • P0178 Ford Focus Electric
  • P0178 Ford Freestar
  • P0178 Ford Freestyle
  • P0178 Ford Fusion
  • P0178 Ford Fusion Energi
  • P0178 Ford Fusion Hybrid
  • P0178 Ford Fusion Plug-In Hybrid
  • P0178 Ford GT
  • P0178 Ford Mustang
  • P0178 Ford Mustang Mach-E
  • P0178 Ford Mystique
  • P0178 Ford Probe
  • P0178 Ford Ranger
  • P0178 Ford Taurus
  • P0178 Ford Taurus X
  • P0178 Ford Tempo
  • P0178 Ford Thunderbird
  • P0178 Ford Transit
  • P0178 Ford Transit Connect
  • P0178 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.