Can anyone tell me where the front 02 sensor is located. I need to replace it and have no clue where it's located.

Thanks!

 

The oxygen sensors are located in the exhaust pipe or manifold. The 4 cylinder has 2 of them. Upstream sensor is in the exhaust manifold, you will need to remove the heat shroud to get to it. Downstream sensor is in the exhaust pipe. The V6 engine has four sensors. Upstream ones are in the exhaust manifold and are an absolute bear to get to. Downstream ones are just a little further down the exhaust system in the pipes. Lh downstream is right under the oil filter for an example.
Now we just have to figure out which one to replace and why?

 

I'm replacing Bank 2 Sensor 1, which I assume is upstream, right? How do you tell the difference between bank 1 and bank 2? Thanks!