Did then I'm confused too. It first showed a CA tax due of $3,4xx? Then went to zero? That could only happen if you entered an estimated or extension payment you paid to cover it.
Did you change anything on the federal return? If you change federal you should start the state over to update state.
Try to start state over .....you can first delete state then add it again.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-delete-my-state-return-in-turbotax-on...
