In the 1099-Q section, when asked Who's the Student, select the option This distribution was not used to pay any education expenses.
Enter Form 1099-Q exactly how it appears. Continue to the next screen This Coverdell ESA. In the second box Basis in this Coverdell ESA Account as of December 31, 2016 enter $2,000. Select No, for the next questions. You should see $2,400 appear on Line 21 of your tax return. This amount is taxable income.
See the TurboTax FAQ below for more information. Click "See entire answer" for the full page view.
https://ttlc.intuit.com/replies/5113308