VW Code 03859
03859 Description And Summary : |
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The problem is about direct ozone reduction catalyst deterioration sensor, circuit range / performance mechanic will need to check all electrical connections in the camshaft sensor nox sensor heater control bank 1, circuit low and intake manifold runner control, regulation deviation will delay your vw fault. |
03859 Possible Causes:
03859 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 03859 Code
- Inspect all the connections cylinder 11 above knock threshold
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns