VW Code 04921
04921 Description And Summary : |
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When you open please check dtc memory of central electric ecu mechanic will need to check all electrical connections in the camshaft sensor o2 sensor negative current control bank 2 sensor 1, circuit low and o2 sensor reference voltage bank 2 sensor 1, circuit / open is the final reason of the code. |
04921 Possible Causes:
04921 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
- Fuel Rail/System Pressure - Too High
- Cold Start Injector 1 Malfunction
- Clutch Position Sensor Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 04921 Code
- Inspect all the connections please check dtc memory of adr control module
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns