Work step 9: Diagnostic of oxygen sensor control system
WARNING: This page is about a different car, the 2004 Audi A6, 2003 Audi A6, 2002 Audi A6, 2001 Audi A6, and 2000 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- Engine at idle
Indicated on display
Fig 1: VAG 1551 Scan Tool Display - Work Step 9, Diagnostic Of Oxygen Sensor Control System (1 Of 2)
- Press buttons -0-, -3-, and -7- to select "display group numbers 037" and confirm with -Q- button.
Indicated on display
Fig 2: VAG 1551 Scan Tool Display - Work Step 9, Diagnostic Of Oxygen Sensor Control System (2 Of 2)
- Check specified value in display field 4.
DISPLAY GROUP 037: OXYGEN SENSOR CONTROL SYSTEM (BANK 1)
| Display fields | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 037: Oxygen sensor control system (Bank 1) | ||||
| Display | xx.x % | x.xxx Volts | xxx ms | Test ON |
| Indicated | Load | Voltage of oxygen sensor after TWC, bank1 | Correction value between oxygen sensors 1 and 2, bank1 | Diagnostic condition |
| Work range | 0 to 175 % | 0.00 to 1.00 Volts | - | Test OFF Test ON System OK System not OK |
| Specified Value | 13.5 to 22.5 % | 0.00 to 1.00 Volts | -800ms to 800ms | System OK |
| NOTE | If "System not OK" is displayed: Check DTC memory . See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . | |||
If specified value of "System OK" is reached:
- Press -C- button.
- Press buttons -0-, -3-, and -8- to select "display group number 038" and confirm input with -Q- button.
DISPLAY GROUP 038: OXYGEN SENSOR CONTROL SYSTEM (BANK 2)
| Display fields | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 038: Oxygen sensor control system (Bank 2) | ||||
| Display | xx.x % | x.xx Volts | xxx ms | Test ON |
| Indicated | Load | Voltage of oxygen sensor after TWC, bank2 | Correction value between oxygen sensors 1 and 2, bank2 | Diagnostic condition |
| Work range | 0 to 175 % | 0.00 to 1.00 Volts | - | Test OFF Test ON System OK System not OK |
| Value | 13.5 to 22.5 % | 0.00 to 1.00 Volts | -800ms to 800ms | System OK |
| NOTE | If "System not OK" is displayed: Check DTC memory . See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . | |||
If specified value of "System OK" is reached:
- Press -C- button.