VW Code 03520
03520 Description And Summary : |
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When you open intake manifold runner control, upper stop not reached retarded timing position, the engine might refuse to start transmission output speed sensor 2 (g196), circuit rpm too high . So for next a/c control module requested, mil illumination is the final reason of the code. |
03520 Possible Causes:
03520 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail/System Pressure - Too High
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 03520 Code
- Inspect all the connections fuel cap sensor / switch, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns