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Q: Check Engine Light on 2003 Pontiac Grand Am

I can't figure out why the check enging light didn't go out after I replaced the 02 sensor and that was the only code that came up for the light being on, So I changed the 02 sensor and after about 5 minutes of driving the light popped back on so I did the dianostic again and the same code came up so now I'm lost.
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What brand of oxygen sensor? sometimes the aftermarket sensors won't quite send the right signal maybe try a stock sensor
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