C1691

C1691 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1691 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford C1691 Fault Code Meaning :

Ford C1691 Symptoms :

Ford C1691 Reasons :

How To Fix Ford C1691 Trouble Code ?

Which Ford cars have the code C1691?

  • C1691 Ford Aerostar
  • C1691 Ford Bronco
  • C1691 Ford C-Max
  • C1691 Ford C-Max Energi
  • C1691 Ford C-Max Hybrid
  • C1691 Ford Contour
  • C1691 Ford Crown Victoria
  • C1691 Ford EcoSport
  • C1691 Ford Econoline
  • C1691 Ford Edge
  • C1691 Ford Escape
  • C1691 Ford Escape Hybrid
  • C1691 Ford Escort
  • C1691 Ford Everest
  • C1691 Ford Excursion
  • C1691 Ford Expedition
  • C1691 Ford Explorer
  • C1691 Ford Explorer Sport Trac
  • C1691 Ford F-150
  • C1691 Ford F-250
  • C1691 Ford F-350
  • C1691 Ford Fiesta
  • C1691 Ford Flex
  • C1691 Ford Focus
  • C1691 Ford Focus Electric
  • C1691 Ford Freestar
  • C1691 Ford Freestyle
  • C1691 Ford Fusion
  • C1691 Ford Fusion Energi
  • C1691 Ford Fusion Hybrid
  • C1691 Ford Fusion Plug-In Hybrid
  • C1691 Ford GT
  • C1691 Ford Mustang
  • C1691 Ford Mustang Mach-E
  • C1691 Ford Mystique
  • C1691 Ford Probe
  • C1691 Ford Ranger
  • C1691 Ford Taurus
  • C1691 Ford Taurus X
  • C1691 Ford Tempo
  • C1691 Ford Thunderbird
  • C1691 Ford Transit
  • C1691 Ford Transit Connect
  • C1691 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.