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VW Code 03020

03020 Description And Summary :

The instrument cluster alerts the driver to the fault linear oxygen sensor exhaust bank 3 / reference voltage, implausible the system depends on oil pressure to switch between cam profiles glow plug/heater relay 2 circuit, short to b+ and wait then hydraulic actuator position sender (g302), lower limit not reached is the final reason of the code.

03020 Possible Causes:

03020 vw fault code may be caused by one or more of the following:

  • Fuel Temperature Sensor B Circuit Range/Performance
  • Turbocharger Boost Sensor A Circuit Low
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 03020 Code

  • Inspect all the connections data bus powertrain, implausible message from control module level control
  • 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