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The new “what did you do to your Z today” (with off topic replies) XXXVIII

Originally Posted by BettyZ The code is P2098, post-catalyst fuel trim system too lean bank 2. Sent from my SM-G955U using Tapatalk That’s not the code I was thinking you

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Old 10-05-2020, 09:08 PM   #1 (permalink)
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Originally Posted by BettyZ View Post
The code is P2098, post-catalyst fuel trim system too lean bank 2.

Sent from my SM-G955U using Tapatalk

That’s not the code I was thinking you had. Weird that the post cat O2 would even care if you were lean.

I still think the ECU uses that sensor for some form of engine tuning even though most tel you it doesn’t.
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Old 10-05-2020, 09:46 PM   #2 (permalink)
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Originally Posted by jwick View Post
That’s not the code I was thinking you had. Weird that the post cat O2 would even care if you were lean.

I still think the ECU uses that sensor for some form of engine tuning even though most tel you it doesn’t.
There are two issues.. one is that code. The one that emissions care about is the fuel system reading "not ready." It read as "ready" before Seb's 'emissions test' tune so...

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