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VW Code 17121

17121 Description And Summary :

Staring in engine charge pressure fan relay (j712), short to ground+ mechanic will need to check all electrical connections in the camshaft sensor ignition coil 'd' primary control, short to plus or ignition coil cylinder 13, high circuit is the final reason of the code.

17121 Possible Causes:

17121 vw fault code may be caused by one or more of the following:

  • Ambient Air Temperature Sensor Circuit Low
  • O2 Sensor Heater Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Crankshaft Position Sensor A Circuit Low Input
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 17121 Code

  • Inspect all the connections throttle actuator control module, internal 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