Work procedure
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 diagnostic tester. See Connect diagnostic tester .
- Start engine and let run at idle for at least 15 minutes.
- In diagnostic function "33 - OBD", select "Mode 6: Check test results of components that are not continuously monitored".
- Select the "Test-ID 05: Tank ventilation system".
- Check specified values at idle.TANK VENTILATION SYSTEM SPECIFICATION
Tank ventilation system Specification (1) Deviation of oxygen sensor control in direction "lean" min: 9830.000 Deviation of oxygen sensor control in direction "rich" min: 695,000 (1) Control module internal calculated value - End diagnosis and switch ignition off.
If the specified values are not reached:
- EVAP canister system, checking for proper seal. See EVAP CANISTER SYSTEM, CHECKING FOR PROPER SEAL .
- Check Leak Detection Pump (LDP) -V144-. See LEAK DETECTION PUMP (LDP) -V144-, CHECKING .