U1291

U1291 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1291 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 U1291 Fault Code Meaning :

Ford U1291 Symptoms :

Ford U1291 Reasons :

How To Fix Ford U1291 Trouble Code ?

Which Ford cars have the code U1291?

  • U1291 Ford Aerostar
  • U1291 Ford Bronco
  • U1291 Ford C-Max
  • U1291 Ford C-Max Energi
  • U1291 Ford C-Max Hybrid
  • U1291 Ford Contour
  • U1291 Ford Crown Victoria
  • U1291 Ford EcoSport
  • U1291 Ford Econoline
  • U1291 Ford Edge
  • U1291 Ford Escape
  • U1291 Ford Escape Hybrid
  • U1291 Ford Escort
  • U1291 Ford Everest
  • U1291 Ford Excursion
  • U1291 Ford Expedition
  • U1291 Ford Explorer
  • U1291 Ford Explorer Sport Trac
  • U1291 Ford F-150
  • U1291 Ford F-250
  • U1291 Ford F-350
  • U1291 Ford Fiesta
  • U1291 Ford Flex
  • U1291 Ford Focus
  • U1291 Ford Focus Electric
  • U1291 Ford Freestar
  • U1291 Ford Freestyle
  • U1291 Ford Fusion
  • U1291 Ford Fusion Energi
  • U1291 Ford Fusion Hybrid
  • U1291 Ford Fusion Plug-In Hybrid
  • U1291 Ford GT
  • U1291 Ford Mustang
  • U1291 Ford Mustang Mach-E
  • U1291 Ford Mystique
  • U1291 Ford Probe
  • U1291 Ford Ranger
  • U1291 Ford Taurus
  • U1291 Ford Taurus X
  • U1291 Ford Tempo
  • U1291 Ford Thunderbird
  • U1291 Ford Transit
  • U1291 Ford Transit Connect
  • U1291 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.