You seem very confused. The state of Utah does not audit your federal return, nor does the IRS audit a UT return. Who sent you a letter---the state or the IRS?
I RECEIVED A LETTER FROM THE IRS/STATE
TurboTax does not receive any information from the IRS or your state after your return was filed, so no one at TurboTax knows about a letter you received from the IRS or the state.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-audit/turbotax-audit-support/L6AcMoN...
https://ttlc.intuit.com/turbotax-support/en-us/help-article/internal-revenue-service/got-cp2000-noti...
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