If the federal tax return has not been e-filed then the state tax return can only be printed and mailed. If the federal tax return has been e-filed and Accepted by the IRS then the state return can be e-filed.
See this TurboTax support FAQ for filing a state tax return after the federal return - https://ttlc.intuit.com/community/e-file/help/how-do-i-e-file-my-state-after-i-already-filed-my-fede...
