C3503

C3503 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3503 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.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 C3503 Fault Code Meaning :

Ford C3503 Symptoms :

Ford C3503 Reasons :

How To Fix Ford C3503 Trouble Code ?

Which Ford cars have the code C3503?

  • C3503 Ford Aerostar
  • C3503 Ford Bronco
  • C3503 Ford C-Max
  • C3503 Ford C-Max Energi
  • C3503 Ford C-Max Hybrid
  • C3503 Ford Contour
  • C3503 Ford Crown Victoria
  • C3503 Ford EcoSport
  • C3503 Ford Econoline
  • C3503 Ford Edge
  • C3503 Ford Escape
  • C3503 Ford Escape Hybrid
  • C3503 Ford Escort
  • C3503 Ford Everest
  • C3503 Ford Excursion
  • C3503 Ford Expedition
  • C3503 Ford Explorer
  • C3503 Ford Explorer Sport Trac
  • C3503 Ford F-150
  • C3503 Ford F-250
  • C3503 Ford F-350
  • C3503 Ford Fiesta
  • C3503 Ford Flex
  • C3503 Ford Focus
  • C3503 Ford Focus Electric
  • C3503 Ford Freestar
  • C3503 Ford Freestyle
  • C3503 Ford Fusion
  • C3503 Ford Fusion Energi
  • C3503 Ford Fusion Hybrid
  • C3503 Ford Fusion Plug-In Hybrid
  • C3503 Ford GT
  • C3503 Ford Mustang
  • C3503 Ford Mustang Mach-E
  • C3503 Ford Mystique
  • C3503 Ford Probe
  • C3503 Ford Ranger
  • C3503 Ford Taurus
  • C3503 Ford Taurus X
  • C3503 Ford Tempo
  • C3503 Ford Thunderbird
  • C3503 Ford Transit
  • C3503 Ford Transit Connect
  • C3503 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.