U1977

U1977 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1977 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 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.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford U1977 Fault Code Meaning :

Ford U1977 Symptoms :

Ford U1977 Reasons :

How To Fix Ford U1977 Trouble Code ?

Which Ford cars have the code U1977?

  • U1977 Ford Aerostar
  • U1977 Ford Bronco
  • U1977 Ford C-Max
  • U1977 Ford C-Max Energi
  • U1977 Ford C-Max Hybrid
  • U1977 Ford Contour
  • U1977 Ford Crown Victoria
  • U1977 Ford EcoSport
  • U1977 Ford Econoline
  • U1977 Ford Edge
  • U1977 Ford Escape
  • U1977 Ford Escape Hybrid
  • U1977 Ford Escort
  • U1977 Ford Everest
  • U1977 Ford Excursion
  • U1977 Ford Expedition
  • U1977 Ford Explorer
  • U1977 Ford Explorer Sport Trac
  • U1977 Ford F-150
  • U1977 Ford F-250
  • U1977 Ford F-350
  • U1977 Ford Fiesta
  • U1977 Ford Flex
  • U1977 Ford Focus
  • U1977 Ford Focus Electric
  • U1977 Ford Freestar
  • U1977 Ford Freestyle
  • U1977 Ford Fusion
  • U1977 Ford Fusion Energi
  • U1977 Ford Fusion Hybrid
  • U1977 Ford Fusion Plug-In Hybrid
  • U1977 Ford GT
  • U1977 Ford Mustang
  • U1977 Ford Mustang Mach-E
  • U1977 Ford Mystique
  • U1977 Ford Probe
  • U1977 Ford Ranger
  • U1977 Ford Taurus
  • U1977 Ford Taurus X
  • U1977 Ford Tempo
  • U1977 Ford Thunderbird
  • U1977 Ford Transit
  • U1977 Ford Transit Connect
  • U1977 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.