engine coolant AUDI A4 2000 B5 / 1.G APB Engine Oxygen Sensor Control Checking Workshop Manual

24-93

Oxygen sensors aging, oxygen sensor
before catalytic converter, checking


Test requirements

Coolant temperature min. 85 C (185 F)
(Display group 004, display field 3)

Test sequence for oxygen sensor 1 before
catalytic converter bank 1

- Connect vehicle diagnostic, testing and
information system VAS5051 or VAG1551 and
select engine electronics control module by
entering address word "01" Page 01
-9. When
doing this the engine must be at idle.
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24-102

Test conditions

Perform road test and do not erase DTC
memory.
Coolant temperature at least 85 C (185 F)
(Display group 004, display field 3)

- Connect vehicle diagnostic, testing and
information system VAS5051 or VAG1551 scan
tool and select engine electronics control
module by entering address word "01" Page
01
-9 . When doing this the engine must be at
idle.
Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
During the basic setting the Evaporative Emission (EVAP) canister purge
regulator valve -N80 is closed and the A/C compressor is switched off. - Press buttons -0- and -4- to select function "Basic Setting" and confirm
entry with -Q- button.
Basic Settin
g
Input displa
y group number XXX

Indicated on display
- Press buttons -0-, -3- and -4- to select "display group number 034" and
confirm entry with -Q- button.
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11/22/2002 htt
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pair&id=AUDI.B5.FU04.24.2