2003 Kia Spectra Q&A

2003 Kia Spectra Question: no detection 02 sensor bank 1

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 -
Answer 1
What kind of O2 sensor did you use? Was it a part from Kia, or was it an after market, "universal" sensor? -