P0688

P0688 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0688 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.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford P0688 Fault Code Meaning :

Ford P0688 Symptoms :

Ford P0688 Reasons :

How To Fix Ford P0688 Trouble Code ?

Which Ford cars have the code P0688?

  • P0688 Ford Aerostar
  • P0688 Ford Bronco
  • P0688 Ford C-Max
  • P0688 Ford C-Max Energi
  • P0688 Ford C-Max Hybrid
  • P0688 Ford Contour
  • P0688 Ford Crown Victoria
  • P0688 Ford EcoSport
  • P0688 Ford Econoline
  • P0688 Ford Edge
  • P0688 Ford Escape
  • P0688 Ford Escape Hybrid
  • P0688 Ford Escort
  • P0688 Ford Everest
  • P0688 Ford Excursion
  • P0688 Ford Expedition
  • P0688 Ford Explorer
  • P0688 Ford Explorer Sport Trac
  • P0688 Ford F-150
  • P0688 Ford F-250
  • P0688 Ford F-350
  • P0688 Ford Fiesta
  • P0688 Ford Flex
  • P0688 Ford Focus
  • P0688 Ford Focus Electric
  • P0688 Ford Freestar
  • P0688 Ford Freestyle
  • P0688 Ford Fusion
  • P0688 Ford Fusion Energi
  • P0688 Ford Fusion Hybrid
  • P0688 Ford Fusion Plug-In Hybrid
  • P0688 Ford GT
  • P0688 Ford Mustang
  • P0688 Ford Mustang Mach-E
  • P0688 Ford Mystique
  • P0688 Ford Probe
  • P0688 Ford Ranger
  • P0688 Ford Taurus
  • P0688 Ford Taurus X
  • P0688 Ford Tempo
  • P0688 Ford Thunderbird
  • P0688 Ford Transit
  • P0688 Ford Transit Connect
  • P0688 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.