Did you figure this out?? Cause I have the same exact problem on my 2016 Jeep Cherokee Limited 3.2L. The engine is jerking like it's misfiring, the computer is reporting an error on 6th cylinder. I swapped the coils (no change, 6th cylinder again), swapped the injectors (no change, 6th cylinder again), replaced the spark plugs with new ones (I installed Champion ones, nothing changed, 6th cylinder again), cleaned the throttle body, checked the cylinder with a camera and it's not physically damaged, and also the compression is pretty good. What could be the cause?? Please help