C0203

C0203 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0203 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford C0203 Fault Code Meaning :

Ford C0203 Symptoms :

Ford C0203 Reasons :

How To Fix Ford C0203 Trouble Code ?

Which Ford cars have the code C0203?

  • C0203 Ford Aerostar
  • C0203 Ford Bronco
  • C0203 Ford C-Max
  • C0203 Ford C-Max Energi
  • C0203 Ford C-Max Hybrid
  • C0203 Ford Contour
  • C0203 Ford Crown Victoria
  • C0203 Ford EcoSport
  • C0203 Ford Econoline
  • C0203 Ford Edge
  • C0203 Ford Escape
  • C0203 Ford Escape Hybrid
  • C0203 Ford Escort
  • C0203 Ford Everest
  • C0203 Ford Excursion
  • C0203 Ford Expedition
  • C0203 Ford Explorer
  • C0203 Ford Explorer Sport Trac
  • C0203 Ford F-150
  • C0203 Ford F-250
  • C0203 Ford F-350
  • C0203 Ford Fiesta
  • C0203 Ford Flex
  • C0203 Ford Focus
  • C0203 Ford Focus Electric
  • C0203 Ford Freestar
  • C0203 Ford Freestyle
  • C0203 Ford Fusion
  • C0203 Ford Fusion Energi
  • C0203 Ford Fusion Hybrid
  • C0203 Ford Fusion Plug-In Hybrid
  • C0203 Ford GT
  • C0203 Ford Mustang
  • C0203 Ford Mustang Mach-E
  • C0203 Ford Mystique
  • C0203 Ford Probe
  • C0203 Ford Ranger
  • C0203 Ford Taurus
  • C0203 Ford Taurus X
  • C0203 Ford Tempo
  • C0203 Ford Thunderbird
  • C0203 Ford Transit
  • C0203 Ford Transit Connect
  • C0203 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.