P40B4

P40B4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P40B4 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P40B4 Fault Code Meaning :

Ford P40B4 Symptoms :

Ford P40B4 Reasons :

How To Fix Ford P40B4 Trouble Code ?

Which Ford cars have the code P40B4?

  • P40B4 Ford Aerostar
  • P40B4 Ford Bronco
  • P40B4 Ford C-Max
  • P40B4 Ford C-Max Energi
  • P40B4 Ford C-Max Hybrid
  • P40B4 Ford Contour
  • P40B4 Ford Crown Victoria
  • P40B4 Ford EcoSport
  • P40B4 Ford Econoline
  • P40B4 Ford Edge
  • P40B4 Ford Escape
  • P40B4 Ford Escape Hybrid
  • P40B4 Ford Escort
  • P40B4 Ford Everest
  • P40B4 Ford Excursion
  • P40B4 Ford Expedition
  • P40B4 Ford Explorer
  • P40B4 Ford Explorer Sport Trac
  • P40B4 Ford F-150
  • P40B4 Ford F-250
  • P40B4 Ford F-350
  • P40B4 Ford Fiesta
  • P40B4 Ford Flex
  • P40B4 Ford Focus
  • P40B4 Ford Focus Electric
  • P40B4 Ford Freestar
  • P40B4 Ford Freestyle
  • P40B4 Ford Fusion
  • P40B4 Ford Fusion Energi
  • P40B4 Ford Fusion Hybrid
  • P40B4 Ford Fusion Plug-In Hybrid
  • P40B4 Ford GT
  • P40B4 Ford Mustang
  • P40B4 Ford Mustang Mach-E
  • P40B4 Ford Mystique
  • P40B4 Ford Probe
  • P40B4 Ford Ranger
  • P40B4 Ford Taurus
  • P40B4 Ford Taurus X
  • P40B4 Ford Tempo
  • P40B4 Ford Thunderbird
  • P40B4 Ford Transit
  • P40B4 Ford Transit Connect
  • P40B4 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.