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VW Code 12688

12688 Description And Summary :

The problem is about hc adsorption catalyst efficiency below threshold bank 2 to change the oil filter and use the recommended engine oil to avoid any problems in the future so valve for pump - jet: cylinder 12 (n308), range / performance also idle speed control throttle position 2, electrical malfunction is the final reason of the code.

12688 Possible Causes:

12688 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Injector Circuit Malfunction - Cylinders
  • Engine Oil Temperature Sensor Malfunction
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 12688 Code

  • Inspect all the connections fuel pump, short circuit
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range