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VW Code 03520

03520 Description And Summary :

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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range