CEL 219A & 219B

Hey there, I got a 2015 4.0 with about 205,000km on the clock, vehicle has been nothing but good to me since ownership at 35,000km. I have a full afe exhaust system from the headers back and afe Intake system as well on the vehicle since roughly 50,000km. I just got a CEL for 219A and 219B, air to fuel ratio imbalance between bank 1 and 2. So far I've cleaned my MAF sensor, checked for vacuum leak, checked spark plugs ( which have less than 30,000km, iridium) changed air filter, checked purge valve, still getting the code. The vehicle runs completely fine, no misfires, no power loss, no MPG loss. Yes I've cleared the code multiple times and they both come back. Both my 02 sensors and AF sensors upstream are original, but i find it hard to believe bank 1 and 2 failed at the same time. Any insight on what else to check? Can't find much other information on the forums or online in general besides checking the things I've already checked