The same boat, I submitted on 1/23/21 and my CA state is still pending. I'm not sure if this helped, but I just logged into my TurboTax account and did the following.
* Clicked on see all my returns
* Clicked on Add a State below my CA Pending Status
When I clicked Add a State, it took me back through the final check process, and surprisingly two things were flagged that I needed to review. Once I reviewed and answered the questions, it closed out my taxes again and brought me back to the main screen with a final overview again. I know I filled those areas out before, one was related to my CA state county where I live. I'm hoping this solves the issue and mine gets accepted within the next week.
It won't hurt to do what I did, to see if you have anything pending review, even though it checked out okay when you originally did your taxes. Mine checked out too but now asked me for my county information.
