P1791

P1791 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1791 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 wiper switch is in the OFF position and the BHM park input from the wiper motor is not in park position. Troubleshoot for a wiper motor park switch circuit fault.

When the engine is in idle or in low engine speed and torque condition, the differential pressure over the DPF is expected to be close to zero. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P1791 Fault Code Meaning :

Ford P1791 Symptoms :

Ford P1791 Reasons :

How To Fix Ford P1791 Trouble Code ?

Which Ford cars have the code P1791?

  • P1791 Ford Aerostar
  • P1791 Ford Bronco
  • P1791 Ford C-Max
  • P1791 Ford C-Max Energi
  • P1791 Ford C-Max Hybrid
  • P1791 Ford Contour
  • P1791 Ford Crown Victoria
  • P1791 Ford EcoSport
  • P1791 Ford Econoline
  • P1791 Ford Edge
  • P1791 Ford Escape
  • P1791 Ford Escape Hybrid
  • P1791 Ford Escort
  • P1791 Ford Everest
  • P1791 Ford Excursion
  • P1791 Ford Expedition
  • P1791 Ford Explorer
  • P1791 Ford Explorer Sport Trac
  • P1791 Ford F-150
  • P1791 Ford F-250
  • P1791 Ford F-350
  • P1791 Ford Fiesta
  • P1791 Ford Flex
  • P1791 Ford Focus
  • P1791 Ford Focus Electric
  • P1791 Ford Freestar
  • P1791 Ford Freestyle
  • P1791 Ford Fusion
  • P1791 Ford Fusion Energi
  • P1791 Ford Fusion Hybrid
  • P1791 Ford Fusion Plug-In Hybrid
  • P1791 Ford GT
  • P1791 Ford Mustang
  • P1791 Ford Mustang Mach-E
  • P1791 Ford Mystique
  • P1791 Ford Probe
  • P1791 Ford Ranger
  • P1791 Ford Taurus
  • P1791 Ford Taurus X
  • P1791 Ford Tempo
  • P1791 Ford Thunderbird
  • P1791 Ford Transit
  • P1791 Ford Transit Connect
  • P1791 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.