Skoda OCTAVIA MK1 Service Manual page 221

introduced, is influenced mainly by the following factors:
t Ambient temperature (summer/winter)
t Operating conditions after start
t Function of the probe heater
If faults occur after cold start, it must be checked if the problem occurs before or after the
control is introduced.
Test vehicle under cold start conditions:
Connect vehicle system tester -V.A.G 1552- and select address word 01 "Engine
–
electronics". Engine idling.
Select 08 for the function "read measured value block" and select display group 099
–
→ Chapter.
The condition of the lambda control is displayed
in the display field 4.
Meaning of the 8-digit number block in the
display field 4 (see also
Display field 4
1XXXXXXX
X1XXXXXX
XX1XXXXX
XXX1XXXX
XXXX1XXX
XXXXX1XX
XXXXXX1X
XXXXXXX1
At cold start:
The following appears in the display:
Note
Immediately after the cold start, the lambda probe is
t not yet operational (temperature of the probe is too
low).
→ Chapter):
Meaning of the display
Fault in fault memory
not assigned
not assigned
limited dynamics active
Lambda controller at the stop
Lambda controller switched on
Lambda probe operational
Mixture condition;
display = 1: rich mixture
display 0: = lean mixture
Reading measured value block 99
->
850/rpm 90°C
Reading measured value block 99
->
850/rpm
221
+25% 00010111
30°C +25% 00010001