P858A

P858A Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P858A Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 P858A Fault Code Meaning :

Ford P858A Symptoms :

Ford P858A Reasons :

How To Fix Ford P858A Trouble Code ?

Which Ford cars have the code P858A?

  • P858A Ford Aerostar
  • P858A Ford Bronco
  • P858A Ford C-Max
  • P858A Ford C-Max Energi
  • P858A Ford C-Max Hybrid
  • P858A Ford Contour
  • P858A Ford Crown Victoria
  • P858A Ford EcoSport
  • P858A Ford Econoline
  • P858A Ford Edge
  • P858A Ford Escape
  • P858A Ford Escape Hybrid
  • P858A Ford Escort
  • P858A Ford Everest
  • P858A Ford Excursion
  • P858A Ford Expedition
  • P858A Ford Explorer
  • P858A Ford Explorer Sport Trac
  • P858A Ford F-150
  • P858A Ford F-250
  • P858A Ford F-350
  • P858A Ford Fiesta
  • P858A Ford Flex
  • P858A Ford Focus
  • P858A Ford Focus Electric
  • P858A Ford Freestar
  • P858A Ford Freestyle
  • P858A Ford Fusion
  • P858A Ford Fusion Energi
  • P858A Ford Fusion Hybrid
  • P858A Ford Fusion Plug-In Hybrid
  • P858A Ford GT
  • P858A Ford Mustang
  • P858A Ford Mustang Mach-E
  • P858A Ford Mystique
  • P858A Ford Probe
  • P858A Ford Ranger
  • P858A Ford Taurus
  • P858A Ford Taurus X
  • P858A Ford Tempo
  • P858A Ford Thunderbird
  • P858A Ford Transit
  • P858A Ford Transit Connect
  • P858A 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.