Q: Replaced both o2 sensors on 2003 Camry, but light comes back on. Any help? on 2003 Toyota Camry

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Code called for upstream oxygen sensor. I have replaced both as the car has 135,000 miles.
(2) Answers
(3) Comments
What brand sensors did you use? Some aftermarket's just dont work! Possible citcuit problem as well.
DENSO, NTK/NGK. Is what i have the best luck with on Toyota! No luck with Bosh on anything!
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