My engine light was on, so i got a diagnostics
no year. stated, sigh, nor country, sigh 2.no DTC posted.!post the DTC code, do not interpret it , state it. P0xxx?flat out.are there other codes? other stored or pending DTC codes?(errors)there are many oxy codes, not stating the code is bad news.each has a different reason, guessing is a fail.btw , sensor 2 does not run the cars fuel mix. that be sensor 1.btw, sensor 2, is rear of cat sensors.this sensors purpose IS TO , warn of a dead CAT.if the CAT is getting NAILED by rich fuel , the cat can be goodand the code P042x is one, that can be cause by other fueling issues. RICH. if rich (vastly) the cat can overheat. and fail that test. you need to post all facts, in my questions. first.