U0978

U0978 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U0978 Diagnosis

The CHM does not suupport PWM type DRLs. The vehicle has a BHM mismatch with the CHM. Replace the CHM with one that is compatible with the BHM.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 OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford U0978 Fault Code Meaning :

Ford U0978 Symptoms :

Ford U0978 Reasons :

How To Fix Ford U0978 Trouble Code ?

Which Ford cars have the code U0978?

  • U0978 Ford Aerostar
  • U0978 Ford Bronco
  • U0978 Ford C-Max
  • U0978 Ford C-Max Energi
  • U0978 Ford C-Max Hybrid
  • U0978 Ford Contour
  • U0978 Ford Crown Victoria
  • U0978 Ford EcoSport
  • U0978 Ford Econoline
  • U0978 Ford Edge
  • U0978 Ford Escape
  • U0978 Ford Escape Hybrid
  • U0978 Ford Escort
  • U0978 Ford Everest
  • U0978 Ford Excursion
  • U0978 Ford Expedition
  • U0978 Ford Explorer
  • U0978 Ford Explorer Sport Trac
  • U0978 Ford F-150
  • U0978 Ford F-250
  • U0978 Ford F-350
  • U0978 Ford Fiesta
  • U0978 Ford Flex
  • U0978 Ford Focus
  • U0978 Ford Focus Electric
  • U0978 Ford Freestar
  • U0978 Ford Freestyle
  • U0978 Ford Fusion
  • U0978 Ford Fusion Energi
  • U0978 Ford Fusion Hybrid
  • U0978 Ford Fusion Plug-In Hybrid
  • U0978 Ford GT
  • U0978 Ford Mustang
  • U0978 Ford Mustang Mach-E
  • U0978 Ford Mystique
  • U0978 Ford Probe
  • U0978 Ford Ranger
  • U0978 Ford Taurus
  • U0978 Ford Taurus X
  • U0978 Ford Tempo
  • U0978 Ford Thunderbird
  • U0978 Ford Transit
  • U0978 Ford Transit Connect
  • U0978 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.