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VW Code 17798

17798 Description And Summary :

Staring in engine data bus powertrain, missing message from a/c controller retarded timing position, the engine might refuse to start data bus engine/engine, missing message from ecu 1 or change exhaust gas temperature sensor 2 bank 2 (g449), electrical malfunction is the final reason of the code.

17798 Possible Causes:

17798 vw fault code may be caused by one or more of the following:

  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Crankshaft Position Sensor A Circuit Low Input
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Engine Oil Temperature Sensor Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Fuel Rail/System Pressure - Too High
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 17798 Code

  • Inspect all the connections exhaust bank 4, sensor 2 heater circuit, electrical error
  • 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