P4B91

P4B91 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P4B91 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 P4B91 Fault Code Meaning :

Ford P4B91 Symptoms :

Ford P4B91 Reasons :

How To Fix Ford P4B91 Trouble Code ?

Which Ford cars have the code P4B91?

  • P4B91 Ford Aerostar
  • P4B91 Ford Bronco
  • P4B91 Ford C-Max
  • P4B91 Ford C-Max Energi
  • P4B91 Ford C-Max Hybrid
  • P4B91 Ford Contour
  • P4B91 Ford Crown Victoria
  • P4B91 Ford EcoSport
  • P4B91 Ford Econoline
  • P4B91 Ford Edge
  • P4B91 Ford Escape
  • P4B91 Ford Escape Hybrid
  • P4B91 Ford Escort
  • P4B91 Ford Everest
  • P4B91 Ford Excursion
  • P4B91 Ford Expedition
  • P4B91 Ford Explorer
  • P4B91 Ford Explorer Sport Trac
  • P4B91 Ford F-150
  • P4B91 Ford F-250
  • P4B91 Ford F-350
  • P4B91 Ford Fiesta
  • P4B91 Ford Flex
  • P4B91 Ford Focus
  • P4B91 Ford Focus Electric
  • P4B91 Ford Freestar
  • P4B91 Ford Freestyle
  • P4B91 Ford Fusion
  • P4B91 Ford Fusion Energi
  • P4B91 Ford Fusion Hybrid
  • P4B91 Ford Fusion Plug-In Hybrid
  • P4B91 Ford GT
  • P4B91 Ford Mustang
  • P4B91 Ford Mustang Mach-E
  • P4B91 Ford Mystique
  • P4B91 Ford Probe
  • P4B91 Ford Ranger
  • P4B91 Ford Taurus
  • P4B91 Ford Taurus X
  • P4B91 Ford Tempo
  • P4B91 Ford Thunderbird
  • P4B91 Ford Transit
  • P4B91 Ford Transit Connect
  • P4B91 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.