I am getting a check engine code of P2626 on my 2006 Elantra. I believe that I got the same code some years back and the mechanic told me to use premium gas for a while and the code never came back. Don’t know how bogus that was (since the code says it is related to the O2 sensor, not the fuel system) but hey, it seemed to work either way.
My light has just come on again after several years and about 40,000 miles. After having it checked at the auto parts store it’s back off, but if it goes back on I will obviously have to deal with it. Any thoughts on what i can check? I am savvy enough to know that having the O2 sensor replaced might be pointless and the problem could be one of many different things. Anyone have any good ideas for me about what to look for?