Can you withdrawal your taxes before they are accepted if you find a error

[CatinaT1]

No.  If you filed, it is like dropping it into a mailbox - you cannot get it back, even if it's pending.

You'll have to wait until your return is either accepted or rejected when the IRS starts processing returns on February 12.

• If rejected, you can make any necessary changes regarding your stimulus payments.
• If accepted, you'll need to amend your return. 
• To avoid unnecessary delays, do not amend until your original return has been fully processed.  You will need to print and mail the amendment.  
• Allow 16 weeks for processing.

See this TurboTax FAQ for help with amending.