U0171

U0171 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U0171 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 U0171 Fault Code Meaning :

Ford U0171 Symptoms :

Ford U0171 Reasons :

How To Fix Ford U0171 Trouble Code ?

Which Ford cars have the code U0171?

  • U0171 Ford Aerostar
  • U0171 Ford Bronco
  • U0171 Ford C-Max
  • U0171 Ford C-Max Energi
  • U0171 Ford C-Max Hybrid
  • U0171 Ford Contour
  • U0171 Ford Crown Victoria
  • U0171 Ford EcoSport
  • U0171 Ford Econoline
  • U0171 Ford Edge
  • U0171 Ford Escape
  • U0171 Ford Escape Hybrid
  • U0171 Ford Escort
  • U0171 Ford Everest
  • U0171 Ford Excursion
  • U0171 Ford Expedition
  • U0171 Ford Explorer
  • U0171 Ford Explorer Sport Trac
  • U0171 Ford F-150
  • U0171 Ford F-250
  • U0171 Ford F-350
  • U0171 Ford Fiesta
  • U0171 Ford Flex
  • U0171 Ford Focus
  • U0171 Ford Focus Electric
  • U0171 Ford Freestar
  • U0171 Ford Freestyle
  • U0171 Ford Fusion
  • U0171 Ford Fusion Energi
  • U0171 Ford Fusion Hybrid
  • U0171 Ford Fusion Plug-In Hybrid
  • U0171 Ford GT
  • U0171 Ford Mustang
  • U0171 Ford Mustang Mach-E
  • U0171 Ford Mystique
  • U0171 Ford Probe
  • U0171 Ford Ranger
  • U0171 Ford Taurus
  • U0171 Ford Taurus X
  • U0171 Ford Tempo
  • U0171 Ford Thunderbird
  • U0171 Ford Transit
  • U0171 Ford Transit Connect
  • U0171 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.