VW Code 04809
04809 Description And Summary : |
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Accumulated in electronic control units so valve for pump - jet: cylinder 12 (n308), regulation range exceeded It could be due to limited air getting through your air intake exhaust bank 2 sensor 1 oxygen sensor signal, implausibly rich . So for next fuel cap sensor / switch, circuit low will delay your vw fault. |
04809 Possible Causes:
04809 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 04809 Code
- Inspect all the connections reductant injection air pressure sensor 'a', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns