P1666

P1666 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1666 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 P1666 Fault Code Meaning :

Ford P1666 Symptoms :

Ford P1666 Reasons :

How To Fix Ford P1666 Trouble Code ?

Which Ford cars have the code P1666?

  • P1666 Ford Aerostar
  • P1666 Ford Bronco
  • P1666 Ford C-Max
  • P1666 Ford C-Max Energi
  • P1666 Ford C-Max Hybrid
  • P1666 Ford Contour
  • P1666 Ford Crown Victoria
  • P1666 Ford EcoSport
  • P1666 Ford Econoline
  • P1666 Ford Edge
  • P1666 Ford Escape
  • P1666 Ford Escape Hybrid
  • P1666 Ford Escort
  • P1666 Ford Everest
  • P1666 Ford Excursion
  • P1666 Ford Expedition
  • P1666 Ford Explorer
  • P1666 Ford Explorer Sport Trac
  • P1666 Ford F-150
  • P1666 Ford F-250
  • P1666 Ford F-350
  • P1666 Ford Fiesta
  • P1666 Ford Flex
  • P1666 Ford Focus
  • P1666 Ford Focus Electric
  • P1666 Ford Freestar
  • P1666 Ford Freestyle
  • P1666 Ford Fusion
  • P1666 Ford Fusion Energi
  • P1666 Ford Fusion Hybrid
  • P1666 Ford Fusion Plug-In Hybrid
  • P1666 Ford GT
  • P1666 Ford Mustang
  • P1666 Ford Mustang Mach-E
  • P1666 Ford Mystique
  • P1666 Ford Probe
  • P1666 Ford Ranger
  • P1666 Ford Taurus
  • P1666 Ford Taurus X
  • P1666 Ford Tempo
  • P1666 Ford Thunderbird
  • P1666 Ford Transit
  • P1666 Ford Transit Connect
  • P1666 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.