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VW Code 17657

17657 Description And Summary :

Staring in engine electronic control module incorrect coding retarded timing position, the engine might refuse to start charge pressure fan relay (j712), short to ground+ also charge pressure fan relay (j712), short to b+ is the final reason of the code.

17657 Possible Causes:

17657 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Crankshaft Position Sensor A Circuit Low Input
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Reverse Input Circuit
  • Shift Solenoid E Performance or Stuck Off
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 17657 Code

  • Inspect all the connections throttle position output, circuit / 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