C0503

C0503 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0503 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford C0503 Fault Code Meaning :

Ford C0503 Symptoms :

Ford C0503 Reasons :

How To Fix Ford C0503 Trouble Code ?

Which Ford cars have the code C0503?

  • C0503 Ford Aerostar
  • C0503 Ford Bronco
  • C0503 Ford C-Max
  • C0503 Ford C-Max Energi
  • C0503 Ford C-Max Hybrid
  • C0503 Ford Contour
  • C0503 Ford Crown Victoria
  • C0503 Ford EcoSport
  • C0503 Ford Econoline
  • C0503 Ford Edge
  • C0503 Ford Escape
  • C0503 Ford Escape Hybrid
  • C0503 Ford Escort
  • C0503 Ford Everest
  • C0503 Ford Excursion
  • C0503 Ford Expedition
  • C0503 Ford Explorer
  • C0503 Ford Explorer Sport Trac
  • C0503 Ford F-150
  • C0503 Ford F-250
  • C0503 Ford F-350
  • C0503 Ford Fiesta
  • C0503 Ford Flex
  • C0503 Ford Focus
  • C0503 Ford Focus Electric
  • C0503 Ford Freestar
  • C0503 Ford Freestyle
  • C0503 Ford Fusion
  • C0503 Ford Fusion Energi
  • C0503 Ford Fusion Hybrid
  • C0503 Ford Fusion Plug-In Hybrid
  • C0503 Ford GT
  • C0503 Ford Mustang
  • C0503 Ford Mustang Mach-E
  • C0503 Ford Mystique
  • C0503 Ford Probe
  • C0503 Ford Ranger
  • C0503 Ford Taurus
  • C0503 Ford Taurus X
  • C0503 Ford Tempo
  • C0503 Ford Thunderbird
  • C0503 Ford Transit
  • C0503 Ford Transit Connect
  • C0503 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.