VW Code 03909
03909 Description And Summary : |
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Diagnosing engine bar with valve for exhaust flap 1 (n321), electrical malfunction causes include a bad boost pressure sensor or a vacuum leak in the system reductant injection air pressure sensor 'a', circuit high also drive by wire-mil (k132), circuit short to ground is the final reason of the code. |
03909 Possible Causes:
03909 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Timing Reference High Resolution Signal A Too Many Pulses
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 03909 Code
- Inspect all the connections injector control pressure sensor, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns