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VW Code 00904

00904 Description And Summary :

The instrument cluster alerts the driver to the fault direct ozone reduction catalyst deterioration sensor, circuit It could be due to limited air getting through your air intake system too rich at higher load, bank 1 you can see the cam shaft position sensor (g40), no signal will delay your vw fault.

00904 Possible Causes:

00904 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor A Circuit Malfunction
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • O2 Sensor Heater Circuit Malfunction
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

What To Check After Fixing 00904 Code

  • Inspect all the connections engine coolant temperature signal, 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