2005 Saab 9-5 2.2L with engine code P0160, how do I fix the code?
P0160 - O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
Even if switching characteristics of the heated oxygen sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions.
Under normal conditions the heated oxygen sensor 2 is not used for engine control operation.
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