2003 Toyota Camry Q&A

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

Code called for upstream oxygen sensor. I have replaced both as the car has 135,000 miles. -
Answer 1
What brand sensors did you use? Some aftermarket's just dont work! Possible citcuit problem as well. -
Comment 1
The upstream sensor was an after market, and the downstream was a Bostch. -
Comment 2
DENSO, NTK/NGK. Is what i have the best luck with on Toyota! No luck with Bosh on anything! -
Comment 3
does the live data show catts are ok and what about o2 readings -
Answer 2
why repl with 2 diff kinds? -