COMEBACK at 551k miles?! "Bomb-Proof" Sienna (P0325)

Uh oh... 5k miles after the big timing belt and knock sensor replacement service, the BOMB-PROOF 2000 Toyota Sienna V6 turned on the Check Engine light... P0325-Knock Sensor Bank 1. Is the brand-new NTK sensor crapping out! Or is there another issue? Who is going to foot the bill? IVAN S PICO WAVEFORMS: https://drive.google.com/drive/folders/1kC3nRfC029waANtlRS8Pnm6zcwPBg-D6?usp=share_link TS 100 SOLDERING IRON: https://www.amazon.com/dp/B07SQDZ9SV?tag=onamzpineholl-20&linkCode=ssc&creativeASIN=B07SQDZ9SV&asc_item-id=amzn1.ideas.H4433MU1BH5V&ref_=aip_sf_list_spv_ofs_mixed_d_asin THINKTOOL PROS: ******SAVE $100!******** https://www.amazon.com/dp/B08XXWHQVJ?tag=onamzpineholl-20&linkCode=ssc&creativeASIN=B08XXWHQVJ&asc_item-id=amzn1.ideas.NHZL00NIDEPF&ref_=aip_sf_list_spv_ofs_mixed_d_asin Enjoy! Ivan