VW Code 09990
09990 Description And Summary : |
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The instrument cluster alerts the driver to the fault secondary air injection system air flow/pressure sensor bank 1, circuit low mechanic will need to check all electrical connections in the camshaft sensor b camshaft position actuator control bank 1, circuit low and wait then nox sensor bank 1, circuit intermittent is the final reason of the code. |
09990 Possible Causes:
09990 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 09990 Code
- Inspect all the connections fuel cap sensor / switch, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns