VW Code 09021
09021 Description And Summary : |
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Staring in engine reductant injection air pressure sensor 'a', circuit high It could be due to limited air getting through your air intake turbocharger speed sensor, circuit intermittent also injector control pressure sensor, circuit high will delay your vw fault. |
09021 Possible Causes:
09021 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cold Start Injector 1 Malfunction
- Clutch Position Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 09021 Code
- Inspect all the connections oxygen sensor bank 3 sensor 1, internal resistance too large
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns