Woo-woo noise on cold start

I have a 2013 CRV version and my car started making a high pitched woo-woo-woo sound on a cold start, upon accelerating a little bit (placing the tranny to drive and barely or not stepping accelerate). It's usually gone after driving for 15mins. This started after I drove under strong rain and wet road with some puddles, but not flooded. What could be the cause?


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