I received a tax form showing an excess deferral for 2022. The net result would be an increase of $1 to AGI and taxable income with nothing additional owed either federal or state. Do I need to file an amended return for $1?
No.
The IRS has a great interactive tool that can help you determine if you need to file an amended return. https://www.irs.gov/help/ita/should-i-file-an-amended-return