Operation 8: Diagnosis of tank ventilation valve
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.
Test requirement
- Engine running at idle.
Display on VAS5051:
1 - Enter display group
- Enter "195" for "display group number 195" in zone -2- and confirm entry by pressing -Q- button.
Display on VAS5051:
- Activate basic setting by pressing -A- button.
- Check indication in display field -4-.
| Display zones | ||||
| 1 | 2 | 3 | 4 | |
| Display group 195: Diagnosis of tank ventilation valve | ||||
| Display | xx% | xx% | xx% | --- |
| Display | Percent open, tank ventilation valve | Oxygen sensor control Diagnostic value |
Idle control Deviation |
Diagnosis status |
| Range | Test OFF Test ON TVV OK TVV NOK Abort |
|||
| Specif. value | 0 to 99% | TEV i.O. | ||
| If "TVV NOK" is displayed: Check DTC memory. Refer to Diagnostic Trouble Code (DTC) memory, checking . Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve -N80-, checking | ||||
If specification "Syst. OK" is obtained:
- Press ← button.