P40D8

P40D8 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P40D8 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.The ICU reads the wiper switch position and sends the status of the switch to the BHM. This fault becomes active when the ICU reads that both LO speed and HI speed are active at the same time.

The BHM measures the current on this circuit when the headlamp output is commanded ON. This fault indicates that the left high beam headlamp circuit is drawing more current than it is designed to supply and possibly there is a wiring fault shorting this circuit to ground.

Ford P40D8 Fault Code Meaning :

Ford P40D8 Symptoms :

Ford P40D8 Reasons :

How To Fix Ford P40D8 Trouble Code ?

Which Ford cars have the code P40D8?

  • P40D8 Ford Aerostar
  • P40D8 Ford Bronco
  • P40D8 Ford C-Max
  • P40D8 Ford C-Max Energi
  • P40D8 Ford C-Max Hybrid
  • P40D8 Ford Contour
  • P40D8 Ford Crown Victoria
  • P40D8 Ford EcoSport
  • P40D8 Ford Econoline
  • P40D8 Ford Edge
  • P40D8 Ford Escape
  • P40D8 Ford Escape Hybrid
  • P40D8 Ford Escort
  • P40D8 Ford Everest
  • P40D8 Ford Excursion
  • P40D8 Ford Expedition
  • P40D8 Ford Explorer
  • P40D8 Ford Explorer Sport Trac
  • P40D8 Ford F-150
  • P40D8 Ford F-250
  • P40D8 Ford F-350
  • P40D8 Ford Fiesta
  • P40D8 Ford Flex
  • P40D8 Ford Focus
  • P40D8 Ford Focus Electric
  • P40D8 Ford Freestar
  • P40D8 Ford Freestyle
  • P40D8 Ford Fusion
  • P40D8 Ford Fusion Energi
  • P40D8 Ford Fusion Hybrid
  • P40D8 Ford Fusion Plug-In Hybrid
  • P40D8 Ford GT
  • P40D8 Ford Mustang
  • P40D8 Ford Mustang Mach-E
  • P40D8 Ford Mystique
  • P40D8 Ford Probe
  • P40D8 Ford Ranger
  • P40D8 Ford Taurus
  • P40D8 Ford Taurus X
  • P40D8 Ford Tempo
  • P40D8 Ford Thunderbird
  • P40D8 Ford Transit
  • P40D8 Ford Transit Connect
  • P40D8 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.