2001 Lexus IS300 Q&A

2001 Lexus IS300 Question: codes 141, 440, and 446?

need help fixing these codes cant pass inspection to save my life!!! -
Answer 1
see a mech as these are not diy repairs and can be tricky at times -
Comment 1
Expensive as well? I was hoping to take care of the O2 sensor my self. Can you tell me what each code means, as far as the problem it represents? TIA -