This morning had an engine light with code P2096. Of note, this is a newer to me truck (2010 5.4L with 109k miles) that came with a SCT X3 Tuner and 87 economy tune loaded to truck from an unknown tuner. The tuner also has 87 performance and 91 performance tune. Just yesterday I used the tuner to reset truck to stock not knowing who the tune came from. It does have an afe intake and I believe catback Flowmaster exhaust, otherwise stock. Not sure if this is truly a new code or perhaps the tune had disabled some of the sensors and suppressed the CEL?

No noticeable change in truck sound or drivability. I used OBD Link Scanner to generate attached report. When comparing bank 1 to bank 2, a couple values jumped out at me but still unclear what it means or how to properly diagnose....I included the full report as well.

Short term fuel % trim - Bank 1 = 3.91
Short term fuel % trim - Bank 2 = -0.78
Long term fuel % trim - Bank 1 = 9.38
Long term fuel % trim - Bank 2 = 0.78

O2 sensor lambda wide range (Bank 1, Sensor 1) = 0.973
O2 sensor current wide range (Bank 2, Sensor 1) = 1.014

O2 sensor current wide range (Bank 1, Sensor 1) = -0.574
O2 sensor current wide range (Bank 2 , Sensor 1) = -0.008

I appreciate any insight.