Alright guys ive been stuck with these 2 codes for awhile now... 98 Honda Prelude with p0136 and p0138. Ive done MUCH research and cant find much of any help. It has to do with the rear o2 sensor high voltage. Origionally i thought it was for an exhaust leak but i had that fixed and the codes came back.
Now while the guy was welding the tiny leak he told me i have the wrong catalytic converter.... He said it was way too small...
I dont know what to think here, replace the o2 sensor or get a whole new cat??any input is much appreciated. thanks

 

Nobody?