[shuetming]

Hi, I am driving a 2000 Toyota Echo and i bought it 1 year ago. when I first bought it, right after I drove off the dealer in about 10 minutes and the engine check light was on. I went to Auto Zone right after and they checked it was a problem of the O2 sensor with the code PO141. I replace the sensor 2 months later, but it went back on after I pick up my car at the shop. They told me the other one is malfunction too, so I went and replace the 2 second too. But after that the code was popped up again..Since then I never really change anything of my car..But I keep checking see if the code has changed or not. I went to auto Zone and checked today and it's still PO141 this code. Which is different then everyone in this post. Could you help me to see what is wrong with my car? thank you very much!!