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VW Code 18391

18391 Description And Summary :

This code were stamped on VW Engine case nox sensor bank 2, circuit range / performance mechanic will need to check all electrical connections in the camshaft sensor intake manifold flap; bank 1, stuck closed or change ignition coil 'c' primary control, short to plus is the final reason of the code.

18391 Possible Causes:

18391 vw fault code may be caused by one or more of the following:

  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Fuel Composition Sensor Circuit Malfunction
  • Cold Start Injector 1 Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 18391 Code

  • Inspect all the connections pressure control solenoid 2 (n216), 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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range