catalytic converter AUDI A4 1997 B5 / 1.G AFC Engine Oxygen Sensor Control Checking Before Converter Workshop Manual

24-45


Oxygen Sensor (O2S) control,
checking (before three way
catalytic converter)

Note:

G39 = Heated Oxygen Sensor (HO2S), bank
1
G108 = Heated Oxygen Sensor (HO2S) 2, bank
2

- Read measuring value block using VAG 1551
scan tool until display shows "Read measuring
value block 1" (display group 001) Repair
Group 01.
Read measuring value block 1 1 2 3 4

Indicated on display
Note:
Continue with the test only if the value in display field 1 (engine coolant
temperature) is at least 80 C (176 F). - Press -C- button.
- Press buttons -0-, -1- and -0- to input display group 010.
- Press -Q- button to confirm input.
Read measuring value block 10

Indicated on display
Pa
ge 1 of 7 Ox
yg
en Sensor
(O2S
) control, checkin
g (before three wa
y catal
ytic converter
)
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