VW Code 17856
17856 Description And Summary : |
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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