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VW Code 09990

09990 Description And Summary :

This code were stamped on VW Engine case exhaust gas temperature sensor 2 bank 2 (g449), high causes include a bad boost pressure sensor or a vacuum leak in the system fuel injection valve 4 (n369), short to ground also 'b' rocker arm actuator system, stuck on will delay your vw fault.

09990 Possible Causes:

09990 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor A Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 09990 Code

  • Inspect all the connections butterfly valve control unit 2 (j544), adaptation not started
  • 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

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