P3851

P3851 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3851 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.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 P3851 Fault Code Meaning :

Ford P3851 Symptoms :

Ford P3851 Reasons :

How To Fix Ford P3851 Trouble Code ?

Which Ford cars have the code P3851?

  • P3851 Ford Aerostar
  • P3851 Ford Bronco
  • P3851 Ford C-Max
  • P3851 Ford C-Max Energi
  • P3851 Ford C-Max Hybrid
  • P3851 Ford Contour
  • P3851 Ford Crown Victoria
  • P3851 Ford EcoSport
  • P3851 Ford Econoline
  • P3851 Ford Edge
  • P3851 Ford Escape
  • P3851 Ford Escape Hybrid
  • P3851 Ford Escort
  • P3851 Ford Everest
  • P3851 Ford Excursion
  • P3851 Ford Expedition
  • P3851 Ford Explorer
  • P3851 Ford Explorer Sport Trac
  • P3851 Ford F-150
  • P3851 Ford F-250
  • P3851 Ford F-350
  • P3851 Ford Fiesta
  • P3851 Ford Flex
  • P3851 Ford Focus
  • P3851 Ford Focus Electric
  • P3851 Ford Freestar
  • P3851 Ford Freestyle
  • P3851 Ford Fusion
  • P3851 Ford Fusion Energi
  • P3851 Ford Fusion Hybrid
  • P3851 Ford Fusion Plug-In Hybrid
  • P3851 Ford GT
  • P3851 Ford Mustang
  • P3851 Ford Mustang Mach-E
  • P3851 Ford Mystique
  • P3851 Ford Probe
  • P3851 Ford Ranger
  • P3851 Ford Taurus
  • P3851 Ford Taurus X
  • P3851 Ford Tempo
  • P3851 Ford Thunderbird
  • P3851 Ford Transit
  • P3851 Ford Transit Connect
  • P3851 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.