Once your e-filed return has been accepted, you can't change the direct deposit information. If the IRS attempts to deposit your refund to your account and the bank rejects it, the IRS will mail your refund check to the address on your tax return. See the TurboTax FAQ below for more information.
https://ttlc.intuit.com/questions/1901677-what-if-i-entered-the-wrong-bank-account-for-direct-deposi...
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***