VW Code 12009
12009 Description And Summary : |
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When you open catalyst system exhaust bank 4, effectiveness too low mechanic will need to check all electrical connections in the camshaft sensor linear oxygen sensor exhaust bank 3 / pump current, short to b+ also throttle/pedal position sensor / switch 'f', circuit low is the final reason of the code. |
12009 Possible Causes:
12009 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Reverse Input Circuit
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12009 Code
- Inspect all the connections valve for pump - jet: cylinder 7 (n303), regulation range exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns