You would need to reinstall TurboTax CD/Download 2022 in order to open a .tt22 file.

I no longer have the CD for the 2022 year. Is there a way can I get that again?

You can download older versions of TurboTax CD/download edition here: Where can I download the CD/download edition of TurboTax?

So, how do I access the file if I purchased the program from a store, and no longer have that access code? I need to access my 2022 return, but I can't do so without the access code I no longer have (don't ask why I didn't already have a PDF saved).

When I download the 2022 version and install it, it requires the activation code to proceed, so I'm essentially locked out of my own tax return.

Unfortunately, as you purchased your TurboTax software at retailers we do not have access to your license code. 

Would you happen to still have TurboTax on your computer?

Thank you for choosing TurboTax. 

I want to open a 2022 turbo tax return

You will need to sign in to TurboTax from here, using the same credentials  you had used to create your account. 

Thank  you for choosing TurboTax.