VW Code 03509
03509 Description And Summary : |
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Accumulated in electronic control units so transmission mount valve 1 (n262), short to plus run rough, or might suddenly stall at any given speed relays for small amount of heat (j359), short-circuit after pluses you can see the control module defective is the final reason of the code. |
03509 Possible Causes:
03509 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 03509 Code
- Inspect all the connections starter relay 2, electrical malfunction in circuit (relay stuck / does not switch)
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns