VW Code 08021
08021 Description And Summary : |
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Diameter in engine secondary air injection system pump bank 1, stuck off to change the oil filter and use the recommended engine oil to avoid any problems in the future so transmission control unit (j217), programming error or data-bus powertrain, missing message from engine controller (ecu) is the final reason of the code. |
08021 Possible Causes:
08021 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
- Clutch Position Sensor Circuit Malfunction
- Reverse Input Circuit
- Cylinder 4 Contribution/Balance Fault
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 08021 Code
- Inspect all the connections controller pin coding, implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns