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no detection 02 sensor bank 1 on 2003 Kia Spectra

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i recently replaced my 02 sensor and knock due to failed smog i went back to get a new smog and it still says 02 sensor no detection bank 1 .. i need help on how to fix this i need the car for my kids thanks
(1) Answer
What kind of O2 sensor did you use? Was it a part from Kia, or was it an after market, "universal" sensor?