VW Code 05859
05859 Description And Summary : |
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The instrument cluster alerts the driver to the fault exhaust bank 3 main catalyst, effectiveness too low causes include a bad boost pressure sensor or a vacuum leak in the system nox sensor bank 2, circuit low . So for next mass-airflow sensor 3 (g456), signal to high will delay your vw fault. |
05859 Possible Causes:
05859 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Exhaust Gas Recirculation Sensor B Circuit High
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 05859 Code
- Inspect all the connections starter relay 1, electrical malfunction in circuit (relay stuck / does not switch)
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns