Great question man. I wish i could help ya, but i`m having the same problem with the check engine light on my 99 accord, just got back from Auto Zone and got exactlly the same code as you did ( PO141- 02sensor, bank 1) So if anyone out there could help i would appreciate, and also does the sensor need to be replaced or what, if not replaced will it make other problems, etc.
THANX A LOT GUYS !!!