VW Code 02439
02439 Description And Summary : |
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Staring in engine o2 sensor pumping current trim bank 1 sensor 1, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system control unit error programming error . So for next nox sensor bank 2, circuit high is the final reason of the code. |
02439 Possible Causes:
02439 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Fuel Composition Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 02439 Code
- Inspect all the connections torque management feedback signal "a", range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns