VW Code 15821
15821 Description And Summary : |
|---|
The problem is about exhaust bank 3 oxygen sensor before catalyst, heater circuit, regulation at upper limit It could be due to limited air getting through your air intake fuel cap sensor / switch, circuit high . On the other hand malfunction indication light (k83), short to ground is the final reason of the code. |
15821 Possible Causes:
15821 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Clutch Position Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 15821 Code
- Inspect all the connections intake air heater "a", system performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns