Car just started to lose little power intermittently and sounds louder when this happens.also,how do i know if dct fluid is low?

I don't think you're low on fluid. If you're using a more basic scanner it may not be able to read all the control units. I suggest getting it scanned at a shop with a higher end scanner. That should point you in the right direction. Use this link to find a good shop near you. https://repairpal.com/repair-shops Alex