For most people the 24-48 hour clock won't start until January 27, as I'll explain below.
When you efiled, did you go all the way to the final screen and click a big orange button that says "Transmit My Returns Now?"
If you successfully efiled, then log back into your Online Account. At the Tax Home page what is shown for the status? Does it say pending, rejected, accepted, or what?
If it says your efile status is still "pending", that would be normal at this point in early filing season. Be aware that the IRS doesn't open up to officially start processing returns until January 27. If you efile before then, your return will sit on TurboTax servers until the IRS retrieves it on Jan. 27 (except for a few returns that are pulled early for testing purposes.) So most people won't know until after January 27 whether the return is accepted or rejected. Once accepted, that is when processing will actually begin and the 24-48 hour clock will start.
And wait at least 24 hours after you hear that it's accepted, then it should show up in the IRS "Where's My Refund" tool.
