Hello- 2007 RDX.
I am getting a P0141 code. I bought the downstream sensor (since it’s bank 2). In looking at this, I can find a sensor between the engine and first CAT which I assume is Bank 1. But if that’s right, there is zero chance there is another one AFTER it unless I’m blind.
On this link, if you click on the Walker picture, this is the one I can find. This is BEFORE the first cat.

https://www.rockauto.com/en/catalog/acura,2007,rdx,2.3l+l4+turbocharged,1433630,exhaus t+&+emission,catalytic+converter,5808


I’d appreciate any advice.

thanks!

 

Sensor 1 is the one between turbo and pre-cat, sensor 2 is after pre-cat
upstream sensor 1


downstream sensor 2

 

Thank you! This is very helpful. I wasn’t looking that close to the cat. And it looks like sensor 2 is a lot easier to access than sensor 1.

 

Yeah, under the car instead of taking the top apart and climb in.