C3973

C3973 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3973 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford C3973 Fault Code Meaning :

Ford C3973 Symptoms :

Ford C3973 Reasons :

How To Fix Ford C3973 Trouble Code ?

Which Ford cars have the code C3973?

  • C3973 Ford Aerostar
  • C3973 Ford Bronco
  • C3973 Ford C-Max
  • C3973 Ford C-Max Energi
  • C3973 Ford C-Max Hybrid
  • C3973 Ford Contour
  • C3973 Ford Crown Victoria
  • C3973 Ford EcoSport
  • C3973 Ford Econoline
  • C3973 Ford Edge
  • C3973 Ford Escape
  • C3973 Ford Escape Hybrid
  • C3973 Ford Escort
  • C3973 Ford Everest
  • C3973 Ford Excursion
  • C3973 Ford Expedition
  • C3973 Ford Explorer
  • C3973 Ford Explorer Sport Trac
  • C3973 Ford F-150
  • C3973 Ford F-250
  • C3973 Ford F-350
  • C3973 Ford Fiesta
  • C3973 Ford Flex
  • C3973 Ford Focus
  • C3973 Ford Focus Electric
  • C3973 Ford Freestar
  • C3973 Ford Freestyle
  • C3973 Ford Fusion
  • C3973 Ford Fusion Energi
  • C3973 Ford Fusion Hybrid
  • C3973 Ford Fusion Plug-In Hybrid
  • C3973 Ford GT
  • C3973 Ford Mustang
  • C3973 Ford Mustang Mach-E
  • C3973 Ford Mystique
  • C3973 Ford Probe
  • C3973 Ford Ranger
  • C3973 Ford Taurus
  • C3973 Ford Taurus X
  • C3973 Ford Tempo
  • C3973 Ford Thunderbird
  • C3973 Ford Transit
  • C3973 Ford Transit Connect
  • C3973 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.