U1646

U1646 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1646 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 U1646 Fault Code Meaning :

Ford U1646 Symptoms :

Ford U1646 Reasons :

How To Fix Ford U1646 Trouble Code ?

Which Ford cars have the code U1646?

  • U1646 Ford Aerostar
  • U1646 Ford Bronco
  • U1646 Ford C-Max
  • U1646 Ford C-Max Energi
  • U1646 Ford C-Max Hybrid
  • U1646 Ford Contour
  • U1646 Ford Crown Victoria
  • U1646 Ford EcoSport
  • U1646 Ford Econoline
  • U1646 Ford Edge
  • U1646 Ford Escape
  • U1646 Ford Escape Hybrid
  • U1646 Ford Escort
  • U1646 Ford Everest
  • U1646 Ford Excursion
  • U1646 Ford Expedition
  • U1646 Ford Explorer
  • U1646 Ford Explorer Sport Trac
  • U1646 Ford F-150
  • U1646 Ford F-250
  • U1646 Ford F-350
  • U1646 Ford Fiesta
  • U1646 Ford Flex
  • U1646 Ford Focus
  • U1646 Ford Focus Electric
  • U1646 Ford Freestar
  • U1646 Ford Freestyle
  • U1646 Ford Fusion
  • U1646 Ford Fusion Energi
  • U1646 Ford Fusion Hybrid
  • U1646 Ford Fusion Plug-In Hybrid
  • U1646 Ford GT
  • U1646 Ford Mustang
  • U1646 Ford Mustang Mach-E
  • U1646 Ford Mystique
  • U1646 Ford Probe
  • U1646 Ford Ranger
  • U1646 Ford Taurus
  • U1646 Ford Taurus X
  • U1646 Ford Tempo
  • U1646 Ford Thunderbird
  • U1646 Ford Transit
  • U1646 Ford Transit Connect
  • U1646 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.