To check the status of your 2016 return, see below.
https://ttlc.intuit.com/replies/3319882
If your 2016 return was not filed, due to the timing, you will not be able to e-file your 2016 in TurboTax. Only the current tax year information is available in TurboTax Online. To file your 2016 return, you will need to print and mail it in. E-filing is only available for the last tax year. If your 2016 return says "Started" in TurboTax, be sure to complete the return, review, then print and mail. You will then be able to start your 2017 return.
