VW Code 03509
03509 Description And Summary : |
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The problem is about air cleaner inlet control, circuit low It could be due to limited air getting through your air intake vehicle speed signal wheel speed from brake control module; range / performance . So for next data bus powertrain, missing message from immobilizer will delay your vw fault. |
03509 Possible Causes:
03509 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Reverse Input Circuit
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 03509 Code
- Inspect all the connections secondary air injection system air flow/pressure sensor bank 2, 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