Honda Stream bank 1 sensor 2 fuel trims?

I plugged in the nexpeak to my 2006 Honda Stream today (D17A engine) when we went for a drive, I'm trying to understand more about fuel trims.
I'm just wondering why there are fuel trims for sensor 2 on bank 1? Sensor 2 was quite active and there are no fault codes so it must be right?

I did a search and ended up on this forum again - I think this is perhaps my answer
www.scannerdanner.com/forum/post-your-re...ensor-fuel-trim.html

There are manufacturers, Ford for example, that do use the second o2 sensor in a given cylinder bank to do fuel trim correction. The newer the vehicle the more likely it does so.

The amount of authority given to correct fuel trim again depends on make and model.

The principal idea of this strategy is to avoid catastrophic catalyst failures and elevated emissions in case of obvious failures of the front O2, I believe.
Another advantage is a better fine tuning during normal engine operation.

Thanks - it's amazing what you learn when you start digging deeper into things like this. Of course when I try things I get the weird system, not just the average O2 sensor waveform and fuel trims :dry:

How have I never heard of a Honda Stream! :woohoo: Kinda looks like the first gen Odyssey, or a stretched out Fit.

Anyway, yeah those PIDs are tricky. As Juergen noted, it (can) get more complicated in some cases. I took this shot during a test drive of a '11 Ford F-150 3.5L:



Clearly, a downstream fuel control system is in use. Now, same truck, on the Global side:



Nothing. :lol: Just going off this, you'd think there's no downstream fuel control.

We get a lot of used Japanese imports in New Zealand - up to 2008 most of them are JOBD rather than obd2.
They come with names that we have to look up on Wikipedia to cross reference when doing a google on faults.
Apparently years ago in NZ cars were so expensive people used to fix up antiques to use as 'normal' cars.
Then they dropped import duties on used Japanese cars and there was this flood of cheap cars all of a sudden - with
weird names