2000 Toyota Camry Q&A

2000 Toyota Camry Question: Can any one give me any ideas on where to begin with fixing these codes pulled??

I have four different codes from my 2000 v6 Camry causing my check engine light to be on, the codes are p0135, p0325, p0441 and, p0446. I don't know were to start replacing parts. -
Answer 1
maybe you could start with the first one, the ho2s and the knock sensor first -
Answer 2
DON'T just start repl parts that is costly.seek proper diag as to issues,it could be circuit issues or sensor issues. it will save you money in the long run -
Comment 1
Ok. thank you for the advice! I thought it might be an O2 sensor but just wasn't sure. -