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 MANUALSAUDI2005A4 QUATTRO, 4D SEDAN, 3.2 GREPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEM3.2L - GENERIC SCAN TOOL, ENGINE CODE: BKHST - GENERIC SCAN TOOLDIAGNOSTIC MODESDIAGNOSTIC MODE 06: CHECKING TEST RESULTS OF COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED$3A (58): FUEL TANK EVAP SYSTEM LEAK TEST (0.090)
2005 Audi A4 Quattro, 4D Sedan, 3.2 G
$3A (58): Fuel Tank EVAP System Leak Test (0.090)
2005 Audi A4 Quattro, 4D Sedan, 3.2 GSECTION $3A (58): Fuel Tank EVAP System Leak Test (0.090)
- Connect the diagnostic tester.
- Start the engine and let run at idle speed.
- Select "Mode 6: Check test the results of components that are not continuously monitored".
Select "Test-ID 59 ($3B)".
- Select the desired "Test-ID".
- Check specified values at idle.
| Test-ID (TID) (Hex-ID) | DTC | Component or System | Min. | Max. | Additional Information |
|---|---|---|---|---|---|
| 129 ($81) | P0455 | Tank leak test: Large leak. | 700 ms | Refer to DTC P0455 in Additional exhaust regulation . |
- 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.