P1D78

P1D78 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1D78 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 ICU reads the wiper switch position and sends the status of the switch to the BHM. This fault becomes active when the ICU reads that both LO speed and HI speed are active at the same time.

The BHM measures the current on this circuit when the headlamp output is commanded ON. This fault indicates that the left high beam headlamp circuit is drawing more current than it is designed to supply and possibly there is a wiring fault shorting this circuit to ground.

Ford P1D78 Fault Code Meaning :

Ford P1D78 Symptoms :

Ford P1D78 Reasons :

How To Fix Ford P1D78 Trouble Code ?

Which Ford cars have the code P1D78?

  • P1D78 Ford Aerostar
  • P1D78 Ford Bronco
  • P1D78 Ford C-Max
  • P1D78 Ford C-Max Energi
  • P1D78 Ford C-Max Hybrid
  • P1D78 Ford Contour
  • P1D78 Ford Crown Victoria
  • P1D78 Ford EcoSport
  • P1D78 Ford Econoline
  • P1D78 Ford Edge
  • P1D78 Ford Escape
  • P1D78 Ford Escape Hybrid
  • P1D78 Ford Escort
  • P1D78 Ford Everest
  • P1D78 Ford Excursion
  • P1D78 Ford Expedition
  • P1D78 Ford Explorer
  • P1D78 Ford Explorer Sport Trac
  • P1D78 Ford F-150
  • P1D78 Ford F-250
  • P1D78 Ford F-350
  • P1D78 Ford Fiesta
  • P1D78 Ford Flex
  • P1D78 Ford Focus
  • P1D78 Ford Focus Electric
  • P1D78 Ford Freestar
  • P1D78 Ford Freestyle
  • P1D78 Ford Fusion
  • P1D78 Ford Fusion Energi
  • P1D78 Ford Fusion Hybrid
  • P1D78 Ford Fusion Plug-In Hybrid
  • P1D78 Ford GT
  • P1D78 Ford Mustang
  • P1D78 Ford Mustang Mach-E
  • P1D78 Ford Mystique
  • P1D78 Ford Probe
  • P1D78 Ford Ranger
  • P1D78 Ford Taurus
  • P1D78 Ford Taurus X
  • P1D78 Ford Tempo
  • P1D78 Ford Thunderbird
  • P1D78 Ford Transit
  • P1D78 Ford Transit Connect
  • P1D78 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.