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 CARSECTION 12 (2.0L - TURBO GENERIC SCAN TOOL - MOTRONIC FUEL INJECTION SYSTEM, IGNITION SYSTEM, ENGINE CODE: BPG)ST GENERIC SCAN TOOLDIAGNOSTIC MODESDIAGNOSTIC MODE 04: RESET/DELETE DIAGNOSTIC DATA
2009 Audi A6 Base
Diagnostic Mode 04: Reset/delete diagnostic data
2009 Audi A6 BaseSECTION Diagnostic Mode 04: Reset/delete diagnostic data
WARNING: This page is about a different car, the 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Mode 04 is used to reset or delete the following stored information:
- All emission related malfunctions in the DTC memory.
- The operating conditions at which a malfunction was stored will be reset.
- All adaptation values.
- The test results of all diagnostic functions.
NOTE:
- Depending on diagnostic tester and protocol used, diagnostic mode 04 and the information provided may be referred to by a different name.
Procedure
- Connect the diagnostic tester.
- Switch the ignition to the "ON" position.
- Select "Diagnostic Mode 03: Interrogating fault memory ".
- Then select "Mode 4: Reset/delete diagnostic data".
The diagnostic tester will display: "Diagnostic data are being erased".
- 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.