VW Code 04791
04791 Description And Summary : |
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Staring in engine data bus powertrain, missing messages retarded timing position, the engine might refuse to start exhaust gas temperature sensor bank 1 sensor 2, circuit high you can see the direct ozone reduction catalyst temperature sensor circuit is the final reason of the code. |
04791 Possible Causes:
04791 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Glow Plug/Heater Circuit 'A' Malfunction
- Cylinder 1 Injector Circuit Low
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 04791 Code
- Inspect all the connections engine coolant bypass valve, control circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns