if only P0420 no other code, 95% sure CAT CONVERTER

來源: 於 2010-09-09 12:18:16 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

is bad. NOt O2 sensor issue. You spent $400 ( labor+ part), it must be a rebuild one. Brand new part usually costs $800+ . Some local shops use very cheap parts, they turn bad very quickly. Best solution is buy a cat converter from auto zone (about $100 3 years warrenty) and let your local shop install it for you.