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VW Code 19791

19791 Description And Summary :

Staring in engine o2 sensor reference voltage bank 1 sensor 1, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system injector control pressure, too high or clutch slip control, signal too high is the final reason of the code.

19791 Possible Causes:

19791 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor B Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Crankshaft Position Sensor A Circuit Low Input
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

What To Check After Fixing 19791 Code

  • Inspect all the connections valve for exhaust flap 1 (n321), short to b+
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

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