Did you reset PCM after code read? What was exact code, since there are 4 sensors, 2 in each bank.
BTW a search as follows returns 45 hits: O2 sensor>Problems>Subject Only>Any Date
98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both
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