I had this same issue with our 2006 Odyssey. The fix, in our case, was an o-ring at either the inlet or the outlet at the pump (I can’t remember which). The colder weather makes the o-ring shrink a little and allow air past the seal until the engine warms up, and then it’s properly sealing the passage again and no more air is entering the system. Replace the o-ring, and your problem may go away. I looked up your car (Model and year, anyway, I put in EXL as the trim level, it shouldn’t necessarily matter), and the part number for the o-ring I’m thinking of is 91370-SV4-000. 98 cents. Worth a shot. Good luck.
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