P478E

P478E Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P478E Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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 P478E Fault Code Meaning :

Ford P478E Symptoms :

Ford P478E Reasons :

How To Fix Ford P478E Trouble Code ?

Which Ford cars have the code P478E?

  • P478E Ford Aerostar
  • P478E Ford Bronco
  • P478E Ford C-Max
  • P478E Ford C-Max Energi
  • P478E Ford C-Max Hybrid
  • P478E Ford Contour
  • P478E Ford Crown Victoria
  • P478E Ford EcoSport
  • P478E Ford Econoline
  • P478E Ford Edge
  • P478E Ford Escape
  • P478E Ford Escape Hybrid
  • P478E Ford Escort
  • P478E Ford Everest
  • P478E Ford Excursion
  • P478E Ford Expedition
  • P478E Ford Explorer
  • P478E Ford Explorer Sport Trac
  • P478E Ford F-150
  • P478E Ford F-250
  • P478E Ford F-350
  • P478E Ford Fiesta
  • P478E Ford Flex
  • P478E Ford Focus
  • P478E Ford Focus Electric
  • P478E Ford Freestar
  • P478E Ford Freestyle
  • P478E Ford Fusion
  • P478E Ford Fusion Energi
  • P478E Ford Fusion Hybrid
  • P478E Ford Fusion Plug-In Hybrid
  • P478E Ford GT
  • P478E Ford Mustang
  • P478E Ford Mustang Mach-E
  • P478E Ford Mystique
  • P478E Ford Probe
  • P478E Ford Ranger
  • P478E Ford Taurus
  • P478E Ford Taurus X
  • P478E Ford Tempo
  • P478E Ford Thunderbird
  • P478E Ford Transit
  • P478E Ford Transit Connect
  • P478E 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.