o2 sensor location on 1998 Nissan Maxima

where is the bank 1 sensor 1 o2 sensor located

Asked by for the 1998 Nissan Maxima
bank toward firewall, the sensor above the cat for that bank.

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i have a1998 nissan maxima with 3000v6 where is the bank 1 knock sensor location and he location of the 02sensor bank2 sensor1