P1521

P1521 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1521 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.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.

Troubleshoot for a wiring short to ground fault on any of the CHM output or BHM output circuits discussed above. 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.

Ford P1521 Fault Code Meaning :

Ford P1521 Symptoms :

Ford P1521 Reasons :

How To Fix Ford P1521 Trouble Code ?

Which Ford cars have the code P1521?

  • P1521 Ford Aerostar
  • P1521 Ford Bronco
  • P1521 Ford C-Max
  • P1521 Ford C-Max Energi
  • P1521 Ford C-Max Hybrid
  • P1521 Ford Contour
  • P1521 Ford Crown Victoria
  • P1521 Ford EcoSport
  • P1521 Ford Econoline
  • P1521 Ford Edge
  • P1521 Ford Escape
  • P1521 Ford Escape Hybrid
  • P1521 Ford Escort
  • P1521 Ford Everest
  • P1521 Ford Excursion
  • P1521 Ford Expedition
  • P1521 Ford Explorer
  • P1521 Ford Explorer Sport Trac
  • P1521 Ford F-150
  • P1521 Ford F-250
  • P1521 Ford F-350
  • P1521 Ford Fiesta
  • P1521 Ford Flex
  • P1521 Ford Focus
  • P1521 Ford Focus Electric
  • P1521 Ford Freestar
  • P1521 Ford Freestyle
  • P1521 Ford Fusion
  • P1521 Ford Fusion Energi
  • P1521 Ford Fusion Hybrid
  • P1521 Ford Fusion Plug-In Hybrid
  • P1521 Ford GT
  • P1521 Ford Mustang
  • P1521 Ford Mustang Mach-E
  • P1521 Ford Mystique
  • P1521 Ford Probe
  • P1521 Ford Ranger
  • P1521 Ford Taurus
  • P1521 Ford Taurus X
  • P1521 Ford Tempo
  • P1521 Ford Thunderbird
  • P1521 Ford Transit
  • P1521 Ford Transit Connect
  • P1521 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.