Hello, I'm Danny.
You can try to use the brand name JB weld epoxy to bond the broken piece back on but if you do that you will never be able to remove the sensor ever again. Best thing to do is go to a wrecking yard, parts store, or Toyota dealer and replace the housing. Hope this helps and thanks for using 2CarPros.
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Monday, September 7th, 2020 AT 3:59 PM