U3503

U3503 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3503 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.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 U3503 Fault Code Meaning :

Ford U3503 Symptoms :

Ford U3503 Reasons :

How To Fix Ford U3503 Trouble Code ?

Which Ford cars have the code U3503?

  • U3503 Ford Aerostar
  • U3503 Ford Bronco
  • U3503 Ford C-Max
  • U3503 Ford C-Max Energi
  • U3503 Ford C-Max Hybrid
  • U3503 Ford Contour
  • U3503 Ford Crown Victoria
  • U3503 Ford EcoSport
  • U3503 Ford Econoline
  • U3503 Ford Edge
  • U3503 Ford Escape
  • U3503 Ford Escape Hybrid
  • U3503 Ford Escort
  • U3503 Ford Everest
  • U3503 Ford Excursion
  • U3503 Ford Expedition
  • U3503 Ford Explorer
  • U3503 Ford Explorer Sport Trac
  • U3503 Ford F-150
  • U3503 Ford F-250
  • U3503 Ford F-350
  • U3503 Ford Fiesta
  • U3503 Ford Flex
  • U3503 Ford Focus
  • U3503 Ford Focus Electric
  • U3503 Ford Freestar
  • U3503 Ford Freestyle
  • U3503 Ford Fusion
  • U3503 Ford Fusion Energi
  • U3503 Ford Fusion Hybrid
  • U3503 Ford Fusion Plug-In Hybrid
  • U3503 Ford GT
  • U3503 Ford Mustang
  • U3503 Ford Mustang Mach-E
  • U3503 Ford Mystique
  • U3503 Ford Probe
  • U3503 Ford Ranger
  • U3503 Ford Taurus
  • U3503 Ford Taurus X
  • U3503 Ford Tempo
  • U3503 Ford Thunderbird
  • U3503 Ford Transit
  • U3503 Ford Transit Connect
  • U3503 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.