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ganny

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  1. 3 months ago, after receciving Error Code P0057 (Oxygen sensor heater control circuit low 22), I replaced my Bank 2 Sensor 2 oxygen sensor. I used a Bosch universal sensor available at my local AutoZone. The replacement worked and my CEL did not come back on. Now, 3 months later, my CEL came back on. This time is was Error Code P0430 (Catalyst efficeincy below threshold- bank 2). Based on my research, this could be a bad catayltic converter, but is it usually a bad oxygen sensor (the same sensor I just replaced 3 months ago). Would it make sense for the new oxygen sensor to fail that quickly? My 2003 Lexus GS300 has 95,000 miles. Thanks
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