P1257

P1257 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1257 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 P1257 Fault Code Meaning :

Ford P1257 Symptoms :

Ford P1257 Reasons :

How To Fix Ford P1257 Trouble Code ?

Which Ford cars have the code P1257?

  • P1257 Ford Aerostar
  • P1257 Ford Bronco
  • P1257 Ford C-Max
  • P1257 Ford C-Max Energi
  • P1257 Ford C-Max Hybrid
  • P1257 Ford Contour
  • P1257 Ford Crown Victoria
  • P1257 Ford EcoSport
  • P1257 Ford Econoline
  • P1257 Ford Edge
  • P1257 Ford Escape
  • P1257 Ford Escape Hybrid
  • P1257 Ford Escort
  • P1257 Ford Everest
  • P1257 Ford Excursion
  • P1257 Ford Expedition
  • P1257 Ford Explorer
  • P1257 Ford Explorer Sport Trac
  • P1257 Ford F-150
  • P1257 Ford F-250
  • P1257 Ford F-350
  • P1257 Ford Fiesta
  • P1257 Ford Flex
  • P1257 Ford Focus
  • P1257 Ford Focus Electric
  • P1257 Ford Freestar
  • P1257 Ford Freestyle
  • P1257 Ford Fusion
  • P1257 Ford Fusion Energi
  • P1257 Ford Fusion Hybrid
  • P1257 Ford Fusion Plug-In Hybrid
  • P1257 Ford GT
  • P1257 Ford Mustang
  • P1257 Ford Mustang Mach-E
  • P1257 Ford Mystique
  • P1257 Ford Probe
  • P1257 Ford Ranger
  • P1257 Ford Taurus
  • P1257 Ford Taurus X
  • P1257 Ford Tempo
  • P1257 Ford Thunderbird
  • P1257 Ford Transit
  • P1257 Ford Transit Connect
  • P1257 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.