A code 2 indicates that there is no penalty. It seems a bit early for the IRS to send a letter for 2019 since the due date just passed. Are yiu sure that it is for 2019 and not 2018 (2018 letters are being sent now usually a year after the close of the tax year.)
Look at your 1040 line 4 a & 4b. The box 1 amount should be on 4b. Your total AGI on line 8a and that taxable amount after the deduction on line 11b. If 11b is non-zero then there is a taxable amount.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
