B1257

B1257 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B1257 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford B1257 Fault Code Meaning :

Ford B1257 Symptoms :

Ford B1257 Reasons :

How To Fix Ford B1257 Trouble Code ?

Which Ford cars have the code B1257?

  • B1257 Ford Aerostar
  • B1257 Ford Bronco
  • B1257 Ford C-Max
  • B1257 Ford C-Max Energi
  • B1257 Ford C-Max Hybrid
  • B1257 Ford Contour
  • B1257 Ford Crown Victoria
  • B1257 Ford EcoSport
  • B1257 Ford Econoline
  • B1257 Ford Edge
  • B1257 Ford Escape
  • B1257 Ford Escape Hybrid
  • B1257 Ford Escort
  • B1257 Ford Everest
  • B1257 Ford Excursion
  • B1257 Ford Expedition
  • B1257 Ford Explorer
  • B1257 Ford Explorer Sport Trac
  • B1257 Ford F-150
  • B1257 Ford F-250
  • B1257 Ford F-350
  • B1257 Ford Fiesta
  • B1257 Ford Flex
  • B1257 Ford Focus
  • B1257 Ford Focus Electric
  • B1257 Ford Freestar
  • B1257 Ford Freestyle
  • B1257 Ford Fusion
  • B1257 Ford Fusion Energi
  • B1257 Ford Fusion Hybrid
  • B1257 Ford Fusion Plug-In Hybrid
  • B1257 Ford GT
  • B1257 Ford Mustang
  • B1257 Ford Mustang Mach-E
  • B1257 Ford Mystique
  • B1257 Ford Probe
  • B1257 Ford Ranger
  • B1257 Ford Taurus
  • B1257 Ford Taurus X
  • B1257 Ford Tempo
  • B1257 Ford Thunderbird
  • B1257 Ford Transit
  • B1257 Ford Transit Connect
  • B1257 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.