O2 sensor for the downstream?

Tiny
MLUCER7
  • MEMBER
  • 2004 NISSAN MAXIMA
  • 145,387 MILES
I have a blue downstream o2 sensor part but on the car the connection is green so I just need to know which is the correct o2 sensor for the downstream
Monday, July 28th, 2025 AT 5:41 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,601 POSTS
The downstream sensors are behind the catalytic converter, here is the location. Check out the images (below). Let us know if you need anything else.
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Tuesday, July 29th, 2025 AT 11:25 AM

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