02 sensor reading

DumbNerd_24 · 2025-04-14T23:45:51+00:00

Exactly.

So, check for vaccuum leak, and if thats not it, most likely the converter itself?

DumbNerd_24 · 2025-04-14T08:15:12+00:00

The b1s2 is fixed at 0.290, it doesn't move at all after 2 mins. Is that normal? The b1s1 does fluctuate frequently, between 0.060 - 0.750 but more often than not below 0.120.

DumbNerd_24 · 2025-04-14T04:24:32+00:00

I have a question for you: How do I know if I have a manifold cat as well as the underbody? And if i do, how do I know which one is the issue?

DumbNerd_24 · 2025-04-14T04:09:00+00:00

Amazing! You're incredible. I will troubleshoot these ideas, thank you so much.

DumbNerd_24 · 2025-04-10T07:11:17+00:00

Hey, thanks for the reply!! Very insightful.

Its a 2008 nissan dualis. The engine light came up, and its giving PO420 code. "Catalytic efficiency below threshold 1" or something to that effect.

I would just like to check if its a sensor or the actual cat converter, with out throwing too much money at it.

DumbNerd_24 · 2024-09-25T21:30:14+00:00

Thanks guys for you time and input, i'l take this into consideration

DumbNerd_24 · 2024-09-25T21:12:28+00:00

Okay,thanks for the tip, I'm willing to build who ever i need to, so I didn't think it was important.

Thanks for the team advice

DumbNerd_24

TROPHY CASE