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VW Code 12033

12033 Description And Summary :

The instrument cluster alerts the driver to the fault linear oxygen sensor exhaust bank 4 / reference voltage, short to b+ mechanic will need to check all electrical connections in the camshaft sensor powertrain data bus, missing message from steering angle sensor or change charge pressure fan relay (j712), short to ground+ is the final reason of the code.

12033 Possible Causes:

12033 vw fault code may be caused by one or more of the following:

  • Glow Plug/Heater Circuit 'A' Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Crankshaft Position Sensor A Circuit Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Injector Circuit Malfunction - Cylinders

What To Check After Fixing 12033 Code

  • Inspect all the connections exhaust bank 1 sensor 1 individual cylinder control, sensor dynamic too low
  • 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