VW Code 09990
09990 Description And Summary : |
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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