Step 13: Diagnosis of catalytic converters: 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.
- Accelerator and brake pedals depressed simultaneously (engine will run at 1800 RPM)
- Check display in zone -4-.
NOTE:
The diagnosis time amounts to approx. 40 seconds.
DISPLAY GROUP 046: DIAGNOSIS OF CATALYTIC CONVERTER (BANK 1)
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 046: Diagnosis of catalytic converter (bank 1) | ||||
| Display | xxx rpm | xxx °C | - | - |
| Significance | Engine speed | Exhaust gas temperature | CAT conversion rate | Diagnosis status |
| Operating range | min.: 550 rpm max.: 6700 rpm |
70...850 °C | 0.0...0.73 | Test OFF Test ON CAT B1 OK CAT B1 n.OK |
| Specification | 700...790 rpm | 400...540 °C | 0.0...0.73 | CAT B1 OK |
| Note | Acceleration produces a temperature greater than 400 °C. Start test at approx. 540 °C | If "CAT B1 not OK" is displayed: Interrogate fault memory, see FAULT MEMORY, INTERROGATING AND ERASING . Replace catalytic converter if no fault has been stored . | ||
If specification "CAT B1 OK" is obtained in display zone 4:
- Touch > key.
Indicated on VAS 5051:
Fig 1: Function Display VAS 5051 - Generating Readiness Code, Diagnosis Of Catalytic Converters (3 Of 4)
- - Enter display group
- Use keypad -2- to enter "047" for "Display group number 047" and confirm by touching Q key.
Indicated on VAS 5051:
Fig 2: Function Display VAS 5051 - Generating Readiness Code, Diagnosis Of Catalytic Converters (4 Of 4)
- Activate basic setting by touching key -A-.
- Accelerator and brake pedals depressed simultaneously (engine will run at 1800 RPM)
- Check display in zone -4-.
DISPLAY GROUP 047: DIAGNOSIS OF CATALYTIC CONVERTER (BANK 2)
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 047: Diagnosis of catalytic converter (bank 2) | ||||
| Display | xxx rpm | xxx °C | - | - |
| Significance | Engine speed | Exhaust gas temperature | CAT conversion rate | Diagnosis status |
| Operating range | min.: 550 rpm max.: 6700 rpm |
70...850 °C | 0.0...0.73 | Test OFF Test ON CAT B2 OK CAT B2 n.OK |
| Specification | 730...790 rpm | 400...540 °C | 0.0...0.73 | CAT B2 OK |
| Note | Acceleration produces a temperature greater than 400 °C. Start test at approx. 540 °C | If "CAT B2 not OK" is displayed: Interrogate fault memory, see FAULT MEMORY, INTERROGATING AND ERASING . Replace catalytic converter if no fault has been stored | ||
If specification "CAT B2 OK" is obtained in display zone 4:
- Touch > key.