Tossing this out there to see if anyone has information ...

2005 SRT6 started tripping these two codes after transmission rebuild (shop dropped exhaust in the process) so far, no leaks found. New O2 Sensors all around. LTFT on Bank 2 will start off just over 7% bank 1 2% with the 5% or so delta remaining while driving the car and can grow to 7% after 20 miles of driving. Exhaust shop today checked for leaks and did not confirm one (who knows if they did anything more than look for soot). The cats are aftermarket and have been on the car for 15 year and 100k miles.

I have new exhaust seals for the downpipe headed my way in case that is where the leak is.

Q: i am wondering if by some chance during the installation of the transmission the rear o2 harness got flipped, could that cause what I am seeing? In essence the ECU is seeing pre cat bank 2 with post cat bank 1 data and the opposite for the other side.

Q: Anyone aware of which BOSCH O2 sensor sits where? 16123 call as left downstream and has the short pigtail ...is that Bank 2 drivers side?