P721B

P721B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P721B Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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 P721B Fault Code Meaning :

Ford P721B Symptoms :

Ford P721B Reasons :

How To Fix Ford P721B Trouble Code ?

Which Ford cars have the code P721B?

  • P721B Ford Aerostar
  • P721B Ford Bronco
  • P721B Ford C-Max
  • P721B Ford C-Max Energi
  • P721B Ford C-Max Hybrid
  • P721B Ford Contour
  • P721B Ford Crown Victoria
  • P721B Ford EcoSport
  • P721B Ford Econoline
  • P721B Ford Edge
  • P721B Ford Escape
  • P721B Ford Escape Hybrid
  • P721B Ford Escort
  • P721B Ford Everest
  • P721B Ford Excursion
  • P721B Ford Expedition
  • P721B Ford Explorer
  • P721B Ford Explorer Sport Trac
  • P721B Ford F-150
  • P721B Ford F-250
  • P721B Ford F-350
  • P721B Ford Fiesta
  • P721B Ford Flex
  • P721B Ford Focus
  • P721B Ford Focus Electric
  • P721B Ford Freestar
  • P721B Ford Freestyle
  • P721B Ford Fusion
  • P721B Ford Fusion Energi
  • P721B Ford Fusion Hybrid
  • P721B Ford Fusion Plug-In Hybrid
  • P721B Ford GT
  • P721B Ford Mustang
  • P721B Ford Mustang Mach-E
  • P721B Ford Mystique
  • P721B Ford Probe
  • P721B Ford Ranger
  • P721B Ford Taurus
  • P721B Ford Taurus X
  • P721B Ford Tempo
  • P721B Ford Thunderbird
  • P721B Ford Transit
  • P721B Ford Transit Connect
  • P721B 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.