P3E21

P3E21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3E21 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 P3E21 Fault Code Meaning :

Ford P3E21 Symptoms :

Ford P3E21 Reasons :

How To Fix Ford P3E21 Trouble Code ?

Which Ford cars have the code P3E21?

  • P3E21 Ford Aerostar
  • P3E21 Ford Bronco
  • P3E21 Ford C-Max
  • P3E21 Ford C-Max Energi
  • P3E21 Ford C-Max Hybrid
  • P3E21 Ford Contour
  • P3E21 Ford Crown Victoria
  • P3E21 Ford EcoSport
  • P3E21 Ford Econoline
  • P3E21 Ford Edge
  • P3E21 Ford Escape
  • P3E21 Ford Escape Hybrid
  • P3E21 Ford Escort
  • P3E21 Ford Everest
  • P3E21 Ford Excursion
  • P3E21 Ford Expedition
  • P3E21 Ford Explorer
  • P3E21 Ford Explorer Sport Trac
  • P3E21 Ford F-150
  • P3E21 Ford F-250
  • P3E21 Ford F-350
  • P3E21 Ford Fiesta
  • P3E21 Ford Flex
  • P3E21 Ford Focus
  • P3E21 Ford Focus Electric
  • P3E21 Ford Freestar
  • P3E21 Ford Freestyle
  • P3E21 Ford Fusion
  • P3E21 Ford Fusion Energi
  • P3E21 Ford Fusion Hybrid
  • P3E21 Ford Fusion Plug-In Hybrid
  • P3E21 Ford GT
  • P3E21 Ford Mustang
  • P3E21 Ford Mustang Mach-E
  • P3E21 Ford Mystique
  • P3E21 Ford Probe
  • P3E21 Ford Ranger
  • P3E21 Ford Taurus
  • P3E21 Ford Taurus X
  • P3E21 Ford Tempo
  • P3E21 Ford Thunderbird
  • P3E21 Ford Transit
  • P3E21 Ford Transit Connect
  • P3E21 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.