[Gifford]

Hi there,

I am looking for a replacement for my rear O2 sensor in my 2003 WRX 5-Speed. I can find a lot of info on the front, but not too much about the rear. I believe I have narrowed it down to these:

Front Sensor

Rear Sensor

Are these the wrong parts? My rex is throwing a P0420. And I'm hoping this is a good place to start to clear this code. Any help is appreciated. Thanks.

 

[MainFrame]

That sensor isn't even needed. Personally, I'd just find someone with a Tactrix cable and defeat the code through the ECU.