VW Code 04856
04856 Description And Summary : |
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Accumulated in electronic control units so nox sensor bank 2, circuit range / performance to change the oil filter and use the recommended engine oil to avoid any problems in the future so secondary air injection system pump bank 1, stuck off . So for next throttle/pedal position sensor / switch 'b' / 'c', voltage correlation is the final reason of the code. |
04856 Possible Causes:
04856 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 04856 Code
- Inspect all the connections starter activation, return message terminal 50, short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns