U0004

U0004 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U0004 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 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 BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford U0004 Fault Code Meaning :

Ford U0004 Symptoms :

Ford U0004 Reasons :

How To Fix Ford U0004 Trouble Code ?

Which Ford cars have the code U0004?

  • U0004 Ford Aerostar
  • U0004 Ford Bronco
  • U0004 Ford C-Max
  • U0004 Ford C-Max Energi
  • U0004 Ford C-Max Hybrid
  • U0004 Ford Contour
  • U0004 Ford Crown Victoria
  • U0004 Ford EcoSport
  • U0004 Ford Econoline
  • U0004 Ford Edge
  • U0004 Ford Escape
  • U0004 Ford Escape Hybrid
  • U0004 Ford Escort
  • U0004 Ford Everest
  • U0004 Ford Excursion
  • U0004 Ford Expedition
  • U0004 Ford Explorer
  • U0004 Ford Explorer Sport Trac
  • U0004 Ford F-150
  • U0004 Ford F-250
  • U0004 Ford F-350
  • U0004 Ford Fiesta
  • U0004 Ford Flex
  • U0004 Ford Focus
  • U0004 Ford Focus Electric
  • U0004 Ford Freestar
  • U0004 Ford Freestyle
  • U0004 Ford Fusion
  • U0004 Ford Fusion Energi
  • U0004 Ford Fusion Hybrid
  • U0004 Ford Fusion Plug-In Hybrid
  • U0004 Ford GT
  • U0004 Ford Mustang
  • U0004 Ford Mustang Mach-E
  • U0004 Ford Mystique
  • U0004 Ford Probe
  • U0004 Ford Ranger
  • U0004 Ford Taurus
  • U0004 Ford Taurus X
  • U0004 Ford Tempo
  • U0004 Ford Thunderbird
  • U0004 Ford Transit
  • U0004 Ford Transit Connect
  • U0004 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.