[dharder]

I recently got a check engine light and pulled up several codes (1123 and 1125) on my '98 Boxster. Bought an oxygen sensor and replaced the right side exhaust bank sensor (as the codes indicated). No change. Codes reappeared in a week or so.

Any ideas? I don't really want to start indiscriminately start changing O2 sensors at $120 a pop.

Thanks in advance!!