C0543

C0543 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0543 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.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford C0543 Fault Code Meaning :

Ford C0543 Symptoms :

Ford C0543 Reasons :

How To Fix Ford C0543 Trouble Code ?

Which Ford cars have the code C0543?

  • C0543 Ford Aerostar
  • C0543 Ford Bronco
  • C0543 Ford C-Max
  • C0543 Ford C-Max Energi
  • C0543 Ford C-Max Hybrid
  • C0543 Ford Contour
  • C0543 Ford Crown Victoria
  • C0543 Ford EcoSport
  • C0543 Ford Econoline
  • C0543 Ford Edge
  • C0543 Ford Escape
  • C0543 Ford Escape Hybrid
  • C0543 Ford Escort
  • C0543 Ford Everest
  • C0543 Ford Excursion
  • C0543 Ford Expedition
  • C0543 Ford Explorer
  • C0543 Ford Explorer Sport Trac
  • C0543 Ford F-150
  • C0543 Ford F-250
  • C0543 Ford F-350
  • C0543 Ford Fiesta
  • C0543 Ford Flex
  • C0543 Ford Focus
  • C0543 Ford Focus Electric
  • C0543 Ford Freestar
  • C0543 Ford Freestyle
  • C0543 Ford Fusion
  • C0543 Ford Fusion Energi
  • C0543 Ford Fusion Hybrid
  • C0543 Ford Fusion Plug-In Hybrid
  • C0543 Ford GT
  • C0543 Ford Mustang
  • C0543 Ford Mustang Mach-E
  • C0543 Ford Mystique
  • C0543 Ford Probe
  • C0543 Ford Ranger
  • C0543 Ford Taurus
  • C0543 Ford Taurus X
  • C0543 Ford Tempo
  • C0543 Ford Thunderbird
  • C0543 Ford Transit
  • C0543 Ford Transit Connect
  • C0543 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.