If you hit underpayment penalty please check the form 5805, it has errors. You will be paying more penalty than you should.
On the Federal form 2210, you may be owing more penalty if you correct the errors.
https://ttlc.intuit.com/community/taxes/discussion/re-errors-in-form-2210-and-california-ftb-5805-in-turbotax-2022/01/2939864#M1072753
incorrect results are due to incorrect entries somewhere. so check your entries. or provide more details.