O2 sensor lean

[Lotus54]

I just got the ElanScan working and learning.

I see an O2 lean 'error' set. When I did the scan and watching, it seemed to sweep pretty weep, not bottoming or topping. But the range seemed a bit odd.

I haven't even seen if there is a 'base' mixture setting yet, which if it was a bit lean could explain that.

Any thoughts?

(I captured it from the very hard start cold, but the software crashed so I don't have it).
I did see my temp was fine, so the sender, wiring or gauge is bad.

Mark