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

Code called for upstream oxygen sensor. I have replaced both as the car has 135,000 miles.

by in Rocky Mount, NC on September 26, 2013
2 answers 3 comments
ANSWER by on September 26, 2013
What brand sensors did you use? Some aftermarket's just dont work! Possible citcuit problem as well.
COMMENT by on September 27, 2013
The upstream sensor was an after market, and the downstream was a Bostch.
COMMENT by on September 27, 2013
DENSO, NTK/NGK. Is what i have the best luck with on Toyota! No luck with Bosh on anything!
COMMENT by on September 27, 2013
does the live data show catts are ok and what about o2 readings
ANSWER by on September 27, 2013
why repl with 2 diff kinds?