Hello,

Thanks for the quick answers. it turns out that the more you know, the more you know you do not know. I study further

Hello, Toyota Yars 2012 1NR-FE I'm stuck with things I can not trust. Toyota oxygen sensor before and after catalytic converter shows unreasonable. I've read one there and can not remember what I did wrong. maybe some sharp person here who can help me. blue is before cat and red is after. This is wh...