2019 CX-5 Coolant problem (CEL = P0126)

Daughter's 2021 CX-5 had a check engine light. Dealership found code P0126 and TSB 01-23-04, her CX-5 will be repaired in 10 days and under warranty. I am just disappointed that from this thread, it a well known issue and Mazda has not properly addressed it. I could not find the TSB online, so I am not sure if they have a new part or not.
 
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