VW Code 05021
05021 Description And Summary : |
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Accumulated in electronic control units so injector cylinder 14 (n391), circuit low to change the oil filter and use the recommended engine oil to avoid any problems in the future so o2 sensor reference voltage bank 2 sensor 1, performance . So for next exhaust bank 3 sensor 1 oxygen sensor signal, voltage too low during deceleration is the final reason of the code. |
05021 Possible Causes:
05021 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Clutch Position Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Cylinder 4 Contribution/Balance Fault
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 05021 Code
- Inspect all the connections air cleaner inlet control, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns