Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 23 (4.2L - GENERIC SCAN TOOL, ENGINE CODE(S): BVJ (ST-GENERIC SCAN TOOL))ST - GENERIC SCAN TOOLDIAGNOSTIC MODESDIAGNOSTIC MODE 6 - CHECK TEST RESULTS OF COMPONENTS NOT CONTINUOUSLY MONITOREDOBDMID 34 ($22): CATALYST MONITOR BANK 2
2009 Audi A6 Base
OBDMID 34 ($22): Catalyst Monitor Bank 2
2009 Audi A6 BaseSECTION OBDMID 34 ($22): Catalyst Monitor Bank 2
WARNING: This page is about a different variant/trim than selected.
- Connect the scan tool.
- Start the engine and let run at idle speed.
- Select "Mode 6: Check test the results of components that are not continuously monitored".
Select "OBDMID 34 ($22)".
- Select the desired "Test-ID".
- Check specified values at idle.
| Test-ID (TID) (Hex-ID) | DTC | Component or System | Min. | Max. | Additional Information |
|---|---|---|---|---|---|
| 132 ($84) | P0431 | Conversion Capability (storage) Check. | 0.8 - 1.5 | --- | Refer to DTC P0431 under Control module and output signals . |
- 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.