I’m so sorry, the TouchID button is the key to the logic board. You will need to replace both the button and the logic board as they are married for life.
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Reference the logic board part images here [https://www.ifixit.com/Parts/MacBook_Pro_13%22_Touch_Bar_2017/Motherboards] note each one has its TouhID sensor with it.
I’m so sorry, the TouchID button is the key to the logic board. You will need to replace both the button and the logic board as they are married for life.