Service & Repair Manual

24-95
Display fields
1 2 3 4
Display group 034: Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 1)
Display
xxxx/min
xxx C
x.x s ---
Indicated
Engine speed
(RPM)
Exhaust
temperature
Period duration
Oxygen sensor before
Catalytic converter
Diagnostic condition
Functional
range
630 to 6800
70 to 850 C
0 to 3.0 s Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value
1000 to 2400
RPM
above 380 C
0.1 to 1.8 s
B1-S2 OK
Notes If the specified value is not reached, replace oxygen sensor 1
before catalytic converter (bank 1)
Note for display field 2:
Calculated value from engine speed and engine load.
Note for display fields 3 and 4:
Period duration is the time between two oxygen sensor voltage jumps (e.g. rich - lean - rich) and is therefore a measurement
of the aging condition of the oxygen sensor. If the specified time is exceeded, display field 4 will indicate = B1-S1 not OK.
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