P637D

P637D Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P637D 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 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 P637D Fault Code Meaning :

Ford P637D Symptoms :

Ford P637D Reasons :

How To Fix Ford P637D Trouble Code ?

Which Ford cars have the code P637D?

  • P637D Ford Aerostar
  • P637D Ford Bronco
  • P637D Ford C-Max
  • P637D Ford C-Max Energi
  • P637D Ford C-Max Hybrid
  • P637D Ford Contour
  • P637D Ford Crown Victoria
  • P637D Ford EcoSport
  • P637D Ford Econoline
  • P637D Ford Edge
  • P637D Ford Escape
  • P637D Ford Escape Hybrid
  • P637D Ford Escort
  • P637D Ford Everest
  • P637D Ford Excursion
  • P637D Ford Expedition
  • P637D Ford Explorer
  • P637D Ford Explorer Sport Trac
  • P637D Ford F-150
  • P637D Ford F-250
  • P637D Ford F-350
  • P637D Ford Fiesta
  • P637D Ford Flex
  • P637D Ford Focus
  • P637D Ford Focus Electric
  • P637D Ford Freestar
  • P637D Ford Freestyle
  • P637D Ford Fusion
  • P637D Ford Fusion Energi
  • P637D Ford Fusion Hybrid
  • P637D Ford Fusion Plug-In Hybrid
  • P637D Ford GT
  • P637D Ford Mustang
  • P637D Ford Mustang Mach-E
  • P637D Ford Mystique
  • P637D Ford Probe
  • P637D Ford Ranger
  • P637D Ford Taurus
  • P637D Ford Taurus X
  • P637D Ford Tempo
  • P637D Ford Thunderbird
  • P637D Ford Transit
  • P637D Ford Transit Connect
  • P637D 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.