Can anyone tell me how many o2 sensors are on this car  Engine type  EJ259CXFWL.

Thanks for your time

Should be just 2.  An upstream and downstream.

You probably have 5!

The 04 and early 05 was the first pzev engine for the CA emissions states. As such they borrowed the header design from the H6 engine. You should have two equal length headers each with their own cat and a cat after the Y. The first 2 cats have 2 O2 sensors and the 3rd one has 1.

 

O.

Wow, ok didn't realize they had gone that far.

Crawl under and look. They're easy to find.