B3891

B3891 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3891 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 B3891 Fault Code Meaning :

Ford B3891 Symptoms :

Ford B3891 Reasons :

How To Fix Ford B3891 Trouble Code ?

Which Ford cars have the code B3891?

  • B3891 Ford Aerostar
  • B3891 Ford Bronco
  • B3891 Ford C-Max
  • B3891 Ford C-Max Energi
  • B3891 Ford C-Max Hybrid
  • B3891 Ford Contour
  • B3891 Ford Crown Victoria
  • B3891 Ford EcoSport
  • B3891 Ford Econoline
  • B3891 Ford Edge
  • B3891 Ford Escape
  • B3891 Ford Escape Hybrid
  • B3891 Ford Escort
  • B3891 Ford Everest
  • B3891 Ford Excursion
  • B3891 Ford Expedition
  • B3891 Ford Explorer
  • B3891 Ford Explorer Sport Trac
  • B3891 Ford F-150
  • B3891 Ford F-250
  • B3891 Ford F-350
  • B3891 Ford Fiesta
  • B3891 Ford Flex
  • B3891 Ford Focus
  • B3891 Ford Focus Electric
  • B3891 Ford Freestar
  • B3891 Ford Freestyle
  • B3891 Ford Fusion
  • B3891 Ford Fusion Energi
  • B3891 Ford Fusion Hybrid
  • B3891 Ford Fusion Plug-In Hybrid
  • B3891 Ford GT
  • B3891 Ford Mustang
  • B3891 Ford Mustang Mach-E
  • B3891 Ford Mystique
  • B3891 Ford Probe
  • B3891 Ford Ranger
  • B3891 Ford Taurus
  • B3891 Ford Taurus X
  • B3891 Ford Tempo
  • B3891 Ford Thunderbird
  • B3891 Ford Transit
  • B3891 Ford Transit Connect
  • B3891 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.