logo

VW Code 17856

17856 Description And Summary :

Diameter in engine valve for pump - jet: cylinder 10 (n306), range / performance run rough, or might suddenly stall at any given speed oxygen sensor b1 s1: heating circuit regulation at upper limit, lower limit exceeded also injector control pressure, too low - engine cranking will delay your vw fault.

17856 Possible Causes:

17856 vw fault code may be caused by one or more of the following:

  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Turbocharger Boost Sensor A Circuit Low
  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 10 Contribution/balance Fault
  • Reverse Input Circuit

What To Check After Fixing 17856 Code

  • Inspect all the connections secondary air injection system switching valve bank 2, stuck open
  • 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