No, you cannot add a W-2 from a prior year to your current return. You would have to file a 2016 return to claim last year's W-2 income. Even though you may not have been required to file, you may be able to claim a refund of the withholding.
To do your 2016 return using TurboTax, you need the desktop tax software and the return must be mailed in you since cannot efile a prior year return.
A prior year return cannot be done online, the Online version is only to prepare the current year’s return. You can go to the following website to purchase and download TurboTax’s 2016 desktop tax software. https://turbotax.intuit.com/personal-taxes/past-years-products/
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