P91B9

P91B9 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P91B9 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.The BHM is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford P91B9 Fault Code Meaning :

Ford P91B9 Symptoms :

Ford P91B9 Reasons :

How To Fix Ford P91B9 Trouble Code ?

Which Ford cars have the code P91B9?

  • P91B9 Ford Aerostar
  • P91B9 Ford Bronco
  • P91B9 Ford C-Max
  • P91B9 Ford C-Max Energi
  • P91B9 Ford C-Max Hybrid
  • P91B9 Ford Contour
  • P91B9 Ford Crown Victoria
  • P91B9 Ford EcoSport
  • P91B9 Ford Econoline
  • P91B9 Ford Edge
  • P91B9 Ford Escape
  • P91B9 Ford Escape Hybrid
  • P91B9 Ford Escort
  • P91B9 Ford Everest
  • P91B9 Ford Excursion
  • P91B9 Ford Expedition
  • P91B9 Ford Explorer
  • P91B9 Ford Explorer Sport Trac
  • P91B9 Ford F-150
  • P91B9 Ford F-250
  • P91B9 Ford F-350
  • P91B9 Ford Fiesta
  • P91B9 Ford Flex
  • P91B9 Ford Focus
  • P91B9 Ford Focus Electric
  • P91B9 Ford Freestar
  • P91B9 Ford Freestyle
  • P91B9 Ford Fusion
  • P91B9 Ford Fusion Energi
  • P91B9 Ford Fusion Hybrid
  • P91B9 Ford Fusion Plug-In Hybrid
  • P91B9 Ford GT
  • P91B9 Ford Mustang
  • P91B9 Ford Mustang Mach-E
  • P91B9 Ford Mystique
  • P91B9 Ford Probe
  • P91B9 Ford Ranger
  • P91B9 Ford Taurus
  • P91B9 Ford Taurus X
  • P91B9 Ford Tempo
  • P91B9 Ford Thunderbird
  • P91B9 Ford Transit
  • P91B9 Ford Transit Connect
  • P91B9 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.