After you file

TurboTax does not get any information from the IRS after you file your tax return, so no one at TT knows that the IRS sent you a letter or why the IRS is reviewing your return.   If the IRS wants more information from you, they will request it from you by sending a letter.  Meanwhile, all you can do is wait for the IRS.  Only the IRS can give you any information.  

**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**