P91A4

P91A4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P91A4 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 FF.

The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford P91A4 Fault Code Meaning :

Ford P91A4 Symptoms :

Ford P91A4 Reasons :

How To Fix Ford P91A4 Trouble Code ?

Which Ford cars have the code P91A4?

  • P91A4 Ford Aerostar
  • P91A4 Ford Bronco
  • P91A4 Ford C-Max
  • P91A4 Ford C-Max Energi
  • P91A4 Ford C-Max Hybrid
  • P91A4 Ford Contour
  • P91A4 Ford Crown Victoria
  • P91A4 Ford EcoSport
  • P91A4 Ford Econoline
  • P91A4 Ford Edge
  • P91A4 Ford Escape
  • P91A4 Ford Escape Hybrid
  • P91A4 Ford Escort
  • P91A4 Ford Everest
  • P91A4 Ford Excursion
  • P91A4 Ford Expedition
  • P91A4 Ford Explorer
  • P91A4 Ford Explorer Sport Trac
  • P91A4 Ford F-150
  • P91A4 Ford F-250
  • P91A4 Ford F-350
  • P91A4 Ford Fiesta
  • P91A4 Ford Flex
  • P91A4 Ford Focus
  • P91A4 Ford Focus Electric
  • P91A4 Ford Freestar
  • P91A4 Ford Freestyle
  • P91A4 Ford Fusion
  • P91A4 Ford Fusion Energi
  • P91A4 Ford Fusion Hybrid
  • P91A4 Ford Fusion Plug-In Hybrid
  • P91A4 Ford GT
  • P91A4 Ford Mustang
  • P91A4 Ford Mustang Mach-E
  • P91A4 Ford Mystique
  • P91A4 Ford Probe
  • P91A4 Ford Ranger
  • P91A4 Ford Taurus
  • P91A4 Ford Taurus X
  • P91A4 Ford Tempo
  • P91A4 Ford Thunderbird
  • P91A4 Ford Transit
  • P91A4 Ford Transit Connect
  • P91A4 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.