Hey Scotty, I have toyota 2014 allion with CVT gearbox... I see while driving when I release the…

Hey Scotty,
I have toyota 2014 allion with CVT gearbox... I see while driving when I release the throttle the car brakes a lot.... What could be the reason or CVT is like this?
Thanks :)

they are just like that

Are the braking amount double of the AT?

Also I have check engine light(for oxygen sensor) and headlight adjustment light on dashboard...I changed the oxygen sensor because scanner showed it

But still the Check light shows up

false