Oxygen Sensor Behind Catalytic Converter Bank 1 Sensor 2
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the scan tool.
- Start the engine and let run at idle speed.
- Select "Diagnostic Mode 05 - Check Lambda Test Results".
Select "Test-ID 01($01".
- Check specified values at idle.
| Test-ID (TID) (Hex-ID) | DTC | Component or System | Min. | Max. | Additional Information |
|---|---|---|---|---|---|
| 01 ($01) | --- | Voltage threshold from rich to lean (fixed value). | 600 mV | --- | --- |
| 02 ($02) | --- | Voltage threshold from lean to rich (fixed value). | 600 mV | --- | --- |
| 07 ($07) | --- | Minimum oxygen sensor voltage value in test. | 0 mV | 600 mV | --- |
| 08 ($08) | P0138 | Short to Battery Check. | 600 mV | 1048 mV | Refer to DTC P0138 in the OBD DTC Summary Table → SAE P0xxx Diagnostic Trouble Codes for all monitoring values. |
- If any component or system fails to meet the specified values, refer to → Diagnostic Mode 03 - Interrogating Fault Memory to check for stored DTCs or the corresponding diagnostic repair procedure.
- Switch the ignition off.
End of diagnosis.