U1978

U1978 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1978 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.The BHM is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford U1978 Fault Code Meaning :

Ford U1978 Symptoms :

Ford U1978 Reasons :

How To Fix Ford U1978 Trouble Code ?

Which Ford cars have the code U1978?

  • U1978 Ford Aerostar
  • U1978 Ford Bronco
  • U1978 Ford C-Max
  • U1978 Ford C-Max Energi
  • U1978 Ford C-Max Hybrid
  • U1978 Ford Contour
  • U1978 Ford Crown Victoria
  • U1978 Ford EcoSport
  • U1978 Ford Econoline
  • U1978 Ford Edge
  • U1978 Ford Escape
  • U1978 Ford Escape Hybrid
  • U1978 Ford Escort
  • U1978 Ford Everest
  • U1978 Ford Excursion
  • U1978 Ford Expedition
  • U1978 Ford Explorer
  • U1978 Ford Explorer Sport Trac
  • U1978 Ford F-150
  • U1978 Ford F-250
  • U1978 Ford F-350
  • U1978 Ford Fiesta
  • U1978 Ford Flex
  • U1978 Ford Focus
  • U1978 Ford Focus Electric
  • U1978 Ford Freestar
  • U1978 Ford Freestyle
  • U1978 Ford Fusion
  • U1978 Ford Fusion Energi
  • U1978 Ford Fusion Hybrid
  • U1978 Ford Fusion Plug-In Hybrid
  • U1978 Ford GT
  • U1978 Ford Mustang
  • U1978 Ford Mustang Mach-E
  • U1978 Ford Mystique
  • U1978 Ford Probe
  • U1978 Ford Ranger
  • U1978 Ford Taurus
  • U1978 Ford Taurus X
  • U1978 Ford Tempo
  • U1978 Ford Thunderbird
  • U1978 Ford Transit
  • U1978 Ford Transit Connect
  • U1978 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.