heater AUDI A8 1997 D2 / 1.G AHA Engine Readiness Code Workshop Manual

01-80

Explanation of 3-digit value in display fields 1
and 2:

When display = 1
1
2
3

1 Oxygen Sensor (O2S) control active
1 Heated Oxygen Sensor (HO2S)
operational
1 Oxygen Sensor (O2S) heater ON

Step 6: Oxygen sensor aging (time period)

- Press button -4- to select "Basic Setting"
function 04.

- Press button -3- four times to advance to display
group number 34. System in Basic Setting 34
1
2
3
4

Indicated on display (1-4 display fields) - Hold engine speed at 1800-2200 RPM until display changes from "Test
OFF" to "Test ON" in display field 4.
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