No, you may not need to file an amended return for a small math or reporting error unless it results in an additional refund. Amended returns must be filed by mail, so the IRS is unaware of what you may have created in TurboTax.
If you wish to "unamend" your current year return, follow the instructions here: How
do I cancel or undo an amended return?
You may wish to wait until the IRS
has processed your return and sent your refund (if any). Then wait two to three
months to see if you receive a letter from the IRS revising your original
return. This happens fairly often for small changes. The IRS will
recalculate the tax you owe (if any) and send you a bill. This is a fairly easy process
and a lot less hassle than preparing an amended return, which has to be printed
and mailed (no e-file).
For more info:
Do I need to Amend?
IRS Tax Topic 308 - Amended
Returns
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