2017 Tundra 5.7 with p0356 code

Had this truck for about 4 yrs now pre-owned and the other day I had my engine light as well as traction control off light appear. I didn't notice anything while driving however when i put it in reverse it acts like it wants to die. I have swapped coil number 6 with a different coil to see if the code followed it didn't it stayed on coil 6 so I replaced all spark plugs with new double platnium bosch brand, cause I've had them sitting around for a while at the apartment. Then the truck acts like it really wants to die while idle and reversing also you can now hear my AC clutch engage while idle which I never heard before. Any help is appreciated thanks.

 

Any resolution? Mine throws a p0356 as it shifts. I have changed ALL the packs, ALL the plugs, the connector on Cylinder "F" (6) and checked the wiring harness and the problem still persists.

 

Bump......Just threw same code on my 2017 TRD Pro with 211K on it. It went away after reading the code at O'Reily Auto.