Step 7: Diagnosis of oxygen sensor control system: Condition
WARNING: This page is about a different car, the 2003 Audi RS 6. However, it is still accessible from the selected car via links, so may be relevant.
- Engine idling
Indicated on VAS 5051:
Fig 1: Function Display VAS 5051 - Generating Readiness Code, Diagnosis Of Oxygen Sensor Control System (1 Of 4)
- - Enter display group
- Use keypad -2- to enter "037" for "Display group number 037" and confirm by touching Q key.
Indicated on VAS 5051:
Fig 2: Function Display VAS 5051 - Generating Readiness Code, Diagnosis Of Oxygen Sensor Control System (2 Of 4)
- Activate basic setting by touching key -A-.
- Check display in zone -4-.
DISPLAY GROUP 037: OXYGEN SENSOR CONTROL SYSTEM (BANK 1)
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 037: Oxygen sensor control system (bank 1) | ||||
| Display | xx.x % | x.xxx V | xxx ms | Test ON |
| Significance | Load | Voltage of oxygen sensor downstream of catalytic converter, bank 1 | Correction value between oxygen sensors 1 and 2, bank 1 | Diagnosis status |
| Operating range | 0...175 % | 0.000...1.000 V | - | Test OFF Test ON Syst. OK Syst. n.OK |
| Specification | 13.5...22.5 % | 0.000...1.000 V | -200ms...200ms | Syst. OK |
| Note | If "Syst. n.OK" is displayed, interrogate fault memory, see FAULT MEMORY, INTERROGATING AND ERASING | |||
If specification "Syst. OK" is obtained in display zone 4:
- Touch > key.
- Engine idling
Indicated on VAS 5051:
Fig 1: Function Display VAS 5051 - Generating Readiness Code, Diagnosis Of Oxygen Sensor Control System (3 Of 4)
- - Enter display group
- Use keypad -2- to enter "038" for "Display group number 038" and confirm by touching Q key.
Indicated on VAS 5051:
Fig 2: Function Display VAS 5051 - Generating Readiness Code, Diagnosis Of Oxygen Sensor Control System (4 Of 4)
- Activate basic setting by touching key -A-.
- Check display in zone -4-.
DISPLAY GROUP 038: OXYGEN SENSOR CONTROL SYSTEM (BANK 2)
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 038: Oxygen sensor control system (bank 2) | ||||
| Display | xx.x % | x.xxx V | xxx ms | Test ON |
| Significance | Load | Voltage of oxygen sensor downstream of catalytic converter, bank 2 | Correction value between oxygen sensors 1 and 2, bank 2 | Diagnosis status |
| Operating range | 0...175 % | 0.000...1.000 V | - | Test OFF Test ON Syst. OK Syst. n.OK |
| Specification | 13.5...22.5 % | 0.000...1.000 V | -200ms...200ms | Syst. OK |
| Note | If "Syst. n.OK" is displayed, interrogate fault memory, see FAULT MEMORY, INTERROGATING AND ERASING | |||
If specification "Syst. OK" is obtained in display zone 4:
- Touch > key.
- Proceed with next step.