VW Code 04509
04509 Description And Summary : |
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The instrument cluster alerts the driver to the fault engine coolant level sensor / switch, circuit causes include a bad boost pressure sensor or a vacuum leak in the system reductant / regeneration supply control, circuit / open and performance malfunction in cooling system will delay your vw fault. |
04509 Possible Causes:
04509 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Fuel Rail/System Pressure - Too High
- Injector Circuit Malfunction - Cylinders
- Clutch Position Sensor Circuit Malfunction
What To Check After Fixing 04509 Code
- Inspect all the connections control module defective
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns