ECL on for a few days.... Went to Autozone for the code, it shows P0139. According to this article that a gentleman shared with me (
https://sites.google.com/site/mikefocke2/oxygensensors
P0139 ) , it should be the passenger side, the sensor after the cat... But the dude in autozone, confidently told me it should be the driver side before cat....
Well my questions are:
1, Who is right.... I guess I trust the article more than the dude in autozone...
2, I saw on the article that universal sensors could be used and save a lot of money.... Who have a detail article about this? If I want buy universal sensors, which one to buy ? And how to wire them?
3, also I saw a price difference between the upstream oxygen sensor and the downstream sensor.... Some people say the only difference is the wire length...is it true?