sensor AUDI A4 1996 B5 / 1.G AWM Engine Readiness Code User Guide

01-100

Work step 8: Diagnostic of oxygen sensor
control system

Test requirement:

Engine continues to run at 2600 RPM.

Display on VAS5051:
-
Press button to change into display group 037.- Check specified value in display field -4-.
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01-101


Display fields

1 2 3 4
Display group 037: Diagnostic of oxygen sensor control system (Bank 1)
Display xxx % x.xxx V x.xx
---
Indicated Load Oxygen sensor
voltage Bank 2,
sensor 1 Oxygen sensor correction value
between bank 1, sensor 1 and bank 1,
sensor 2 Diagnostic condition
Functional
range
Test OFF
Test ON
System OK
System not OK
Specified
value 13 to
40 % 0.100 to 0.950 volts smaller than 0.02 System OK
Note



If "System not OK" is displayed:
Check DTC memory Page 01
-
12

If specified value "Syst. OK" is obtained:

- Perform next work step.
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01-102

Work step 9: Diagnostic of oxygen sensor
aging behind catalytic converter

Test requirement:

Engine continues to run at 2600 RPM.

Display on VAS5051:
-
Click on - button

Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "043" in button field -2- for "display group number 043"
and press Q button to confirm input.
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01-104


Display fields

1 2 3 4
Display group 043: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 1)
Display xxxx/min
xxx C
x.xxx V
---
Indicated Engine speed
(RPM) Exhaust
temperature Oxygen sensor voltage
Bank 2, sensor 1 Diagnostic condition
Functional
range Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 2600 RPM larger than 350
C
0.100 to 0.950 volts B1-S2 OK
Note



If "B1-S2 not OK" is displayed: Check
DTC memory Page 01
-12

If specified value B1-S2 OK" is obtained:

- Perform next work step.
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01-109


Display fields

1 2 3 4
Display group 070: Diagnostic of tank ventilation valve
Display xx % xx %
---
Indicated Degree tank
ventilation valve is
opened Oxygen
sensor control
Diagnostic
value
Diagnostic condition
Functional
range

Test OFF
Test ON
TVV OK
TVV not OK
Aborted
Specified
value 0 to 99 % less than -7 %
or greater than
7 %
TVV OK
Note


If "TVV not OK" is displayed: Check DTC memory Page 01
-
12
. Check Evaporative Emission (EVAP) canister purge
regulator valve -N80- Page 24
-114

If specified value "TVV OK" is obtained:
Pa
ge 38 of 43 Readiness code11/22/2002 htt
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pair&id=AUDI.B5.FU07.01.7