If there is a penalty and interest due to the state, you will get a letter from them asking for payment. Until that time, just submit the corrected returns and pay the additional tax. Perhaps they will be lenient since you corrected the error on your own.
TurboTax offers a 100% Calculation Guarantee.
This means if you pay an IRS or state penalty or interest because of a TurboTax calculation error, we'll pay you the penalty and interest.
Here is a link that provides more details on this Guarantee: TurboTax 100% Calculation Guarantee
Thanks for your reply Karen, only the mistake is mine. I am a retired teacher from a co-state/private institution. my pension is paid by the state, and therefore I believed I qualified for the CT Teachers Retirement credit. But apparently I don't because that is a different retirement system.
If there is a penalty and interest due to the state, you will get a letter from them asking for payment. Until that time, just submit the corrected returns and pay the additional tax. Perhaps they will be lenient since you corrected the error on your own.