P3688

P3688 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3688 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 P3688 Fault Code Meaning :

Ford P3688 Symptoms :

Ford P3688 Reasons :

How To Fix Ford P3688 Trouble Code ?

Which Ford cars have the code P3688?

  • P3688 Ford Aerostar
  • P3688 Ford Bronco
  • P3688 Ford C-Max
  • P3688 Ford C-Max Energi
  • P3688 Ford C-Max Hybrid
  • P3688 Ford Contour
  • P3688 Ford Crown Victoria
  • P3688 Ford EcoSport
  • P3688 Ford Econoline
  • P3688 Ford Edge
  • P3688 Ford Escape
  • P3688 Ford Escape Hybrid
  • P3688 Ford Escort
  • P3688 Ford Everest
  • P3688 Ford Excursion
  • P3688 Ford Expedition
  • P3688 Ford Explorer
  • P3688 Ford Explorer Sport Trac
  • P3688 Ford F-150
  • P3688 Ford F-250
  • P3688 Ford F-350
  • P3688 Ford Fiesta
  • P3688 Ford Flex
  • P3688 Ford Focus
  • P3688 Ford Focus Electric
  • P3688 Ford Freestar
  • P3688 Ford Freestyle
  • P3688 Ford Fusion
  • P3688 Ford Fusion Energi
  • P3688 Ford Fusion Hybrid
  • P3688 Ford Fusion Plug-In Hybrid
  • P3688 Ford GT
  • P3688 Ford Mustang
  • P3688 Ford Mustang Mach-E
  • P3688 Ford Mystique
  • P3688 Ford Probe
  • P3688 Ford Ranger
  • P3688 Ford Taurus
  • P3688 Ford Taurus X
  • P3688 Ford Tempo
  • P3688 Ford Thunderbird
  • P3688 Ford Transit
  • P3688 Ford Transit Connect
  • P3688 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.