I received a letter saying my refund is being delayed , but they don’t need further information. Am I being audit?

There are several reasons why your refund may be delayed and an audit could be one of them.  However, TurboTax does not have access to any information about your return once it is filed and accepted by the IRS.  Privacy Laws prevents the IRS from sharing information.  So all inquiries about your return status should be directed to the IRS.

You can use this link to track your return status.