VW Code 29020
29020 Description And Summary : |
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Diameter in engine secondary air injection system control 'a', circuit low retarded timing position, the engine might refuse to start mass-airflow sensor 4 (g457), signal to low you can see the exhaust bank 4 sensor 1, voltage too low or air leak will delay your vw fault. |
29020 Possible Causes:
29020 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Reverse Input Circuit
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 29020 Code
- Inspect all the connections voltage supply relay, electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns