Vibration coming from engine at 2000-2250 rpm v75w

have to decide if the vibration is engine or transmission sourced
Is the vibration there in neutral at the rpm of 55 mph or better Taking that at 55mph you would be in over drive and the rpm would be around the 2600 mark
hold the rpm steady and see if the vibration is apparent
raise the rpm to see if it comes in
if it does , it is an engine problem and probably a balance shaft timing out
If not then it is a transmission problem and as it would be in over drive and the indications would be a failing bearing in the rear of the transmission of transfer case

harmonic engine vibration
as it is still under warranty , take it to a dealer service center and have it fixed

If one of your coil packs are not working there is your answer the car will not run on 2 cylinders replace the coil pack and go from there

Dirty throttle body.

check for problem drive line "U" joints or cv joints

that code is a torque convertor code. the vibration is coming from the trans. the trans pump could be going bad sending the vibration to torque convertor and ampflying the vibration.

change the a/c compressor's bearing or service the compressor.

The vibration at that high rpm is most likely coming from the torque convertor and if a manual transmission , then clutch issues.

If this sounds like a tin can rattle it is likely a loose heat shield on top of the catalytic converter. They come loose after time and corrosion take their toll.

It is probably your Motor Mounts. They attach the engine in 4 places to the frame of the car. When the rubber wears out, it will cause excessive veibration.

Take it to your mechanic and tell him to check the motor mounts. For the front and side three mounts, it will probably run about $550 with the parts, im guessing.