Hi I had a new catalytic covertor installed at meineke and the check engine light came back on had it read at autozone and the code was p0430 i took it back to meineke and they said it was the bank 2 o2 sensor , they put a new one in and 2 days later the check engine light came back on . Someone said that the computer needs toadjust to the new O2 sensor before it will go off .has anyone ever heard of this or should i beconcerned . My emissions test is at the end ofMay and i wont pass with the CELon . Any help would be grateful as i really cant afford toput any more money into the car right now. Thank you . Johnnyboy130