9-3 Coupe (9400) L4-2.0L Turbo (B204) (1999)
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oxygen sensor 1 voltage
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oxygen sensor 2, voltage
2
The voltage change in the rear sensor is registered during one oxygen sensor 1 period with a pulse ratio that is 30-80% (+)
3
Correct the voltage change with respect to load and engine speed
4
Add the voltage change in memory
5
50 periods totalled
6
Total below limit
7
Diagnosis performed during this trip
8
Fault criteria for catalytic converter fulfilled