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VW Code 03020

03020 Description And Summary :

The problem is about activation 2-unit injector valve, short to b+ retarded timing position, the engine might refuse to start butterfly valve control unit 2 (j544), under voltage during basic adjustment also internal control module, malfunction is the final reason of the code.

03020 Possible Causes:

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

  • Crankshaft Position Sensor B Circuit Malfunction
  • Shift Solenoid E Performance or Stuck Off
  • Cold Start Injector 1 Malfunction
  • Engine Oil Temperature Sensor Malfunction

What To Check After Fixing 03020 Code

  • Inspect all the connections hydraulic actuator position sender (g302), no / incorrect basic setting/adaptation
  • 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