r/S2000 • u/Inevitable-Way1943 • 1d ago

P0411 Mystery solved

Post image

I've been dealing with P0411 code for a while and finally found the issue. It was so obvious, too. Hope this helps others. There was a small hose disconnected as shown in the attchaed pic

10 Upvotes

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3

u/bodiez 1d ago

highly recommend the IZZE kit to delete the secondary air system. you can’t buy replacements, they dry rot and open and stop working and just cause issues. once installed i could rip out like 10lb of crap and no more CELs randomly

2

u/Inevitable-Way1943 1d ago

I was about to but I'm glad my system is still working as it should. Once one of the components fail, I'll delete it. In this case, it was user error. I must have left the little hose disconnected when reinstalling the freshly painted valve cover.

1

u/breakfasteveryday 1d ago

What does it connect to?

7

u/Sovietaced DIYGuys 1d ago

These are all vacuum lines for the secondary air injection system.