sup everybody hope you guys had a good holiday weekend. well my cel came on this morning po130 o2 problem bank 1 sensor 1 a few years ago i replaced sensor 2. so is bank 1 the one closest to the firewall? thats all i need to know i got emissions this summer and i have to fix it or else illinois state police are gonna butt rape me with tickets and what not. thanks again

 

Not to hijack your thread or anything but I got the P0420 code. And someone else told me it was bank 1 sensor 1 as well. Now I am completely confused....

 

0420= cat fault. and you completely hijacked it so i wont go into detail.

bank 1 would be firewall side, thats is correct... since you replaced one, there is no need for an explaination or anything like that.

 

Hey thanks man.