Wrong Electric Vehicle Credit

[stldrum]

I filled out my 2019 taxes with an Electric Vehicle credit but it was calculated wrong by TurboTax.  I submitted the return.  Now TurboTax has been updated and it is asking me to submit an amended tax return.  That is fine but the initial refund was over $6000, now it shows that I owe over $3000.  

The calculations are technically correct but it is assuming I received the money already from the IRS.  Do I send the amount I "owe" even though the wash of the two returns will be a $2500 refund to mer?  What is my liability to send in the extra owed money if I never received the first too large refund?  Will the IRS send me the original $6000 refund?

Help?

[Critter]

Do not amend the return until you get the original refund...the IRS may catch this calculation error for you. 

[stldrum]

Am I not liable for any penalties and interest on the now "Money Owed" for the amended return? 

[stldrum]

Looks like I spoke too soon - the IRS deposited the full wrong amount into my account.  So I guess send the amended with a check before the 15th?