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VW Code 18791

18791 Description And Summary :

When you open throttle/pedal position sensor / switch 'e', circuit range / performance retarded timing position, the engine might refuse to start transmission mount valve 1 (n262), open circuit and control module defective will delay your vw fault.

18791 Possible Causes:

18791 vw fault code may be caused by one or more of the following:

  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Clutch Position Sensor Circuit Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Turbocharger Boost Sensor A Circuit Low
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Fuel Rail/System Pressure - Too High
  • O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 18791 Code

  • Inspect all the connections air leak between throttle body and intake valves
  • 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