P51B4

P51B4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P51B4 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford P51B4 Fault Code Meaning :

Ford P51B4 Symptoms :

Ford P51B4 Reasons :

How To Fix Ford P51B4 Trouble Code ?

Which Ford cars have the code P51B4?

  • P51B4 Ford Aerostar
  • P51B4 Ford Bronco
  • P51B4 Ford C-Max
  • P51B4 Ford C-Max Energi
  • P51B4 Ford C-Max Hybrid
  • P51B4 Ford Contour
  • P51B4 Ford Crown Victoria
  • P51B4 Ford EcoSport
  • P51B4 Ford Econoline
  • P51B4 Ford Edge
  • P51B4 Ford Escape
  • P51B4 Ford Escape Hybrid
  • P51B4 Ford Escort
  • P51B4 Ford Everest
  • P51B4 Ford Excursion
  • P51B4 Ford Expedition
  • P51B4 Ford Explorer
  • P51B4 Ford Explorer Sport Trac
  • P51B4 Ford F-150
  • P51B4 Ford F-250
  • P51B4 Ford F-350
  • P51B4 Ford Fiesta
  • P51B4 Ford Flex
  • P51B4 Ford Focus
  • P51B4 Ford Focus Electric
  • P51B4 Ford Freestar
  • P51B4 Ford Freestyle
  • P51B4 Ford Fusion
  • P51B4 Ford Fusion Energi
  • P51B4 Ford Fusion Hybrid
  • P51B4 Ford Fusion Plug-In Hybrid
  • P51B4 Ford GT
  • P51B4 Ford Mustang
  • P51B4 Ford Mustang Mach-E
  • P51B4 Ford Mystique
  • P51B4 Ford Probe
  • P51B4 Ford Ranger
  • P51B4 Ford Taurus
  • P51B4 Ford Taurus X
  • P51B4 Ford Tempo
  • P51B4 Ford Thunderbird
  • P51B4 Ford Transit
  • P51B4 Ford Transit Connect
  • P51B4 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.