Does it do it once the car is warmed up? Could be the high pressure fuel pump. I believe Honda put out a service bulletin for that and they said it’s nothing to be concerned about. It won’t affect your cars performance or reliability but it can be annoying. You can still possibly get your HPFP replaced for free if that’s what it is. I heard mine chirp for a few weeks when I hit 12-13k miles, I’m at 20k now and I don’t hear it anymore.