Just now I walked out to my garage and heard a faint buzzing noise. The car was off, and had not been driven for about 4 hours. I put my ear to the car body and verified the noise was coming from the CRV. Very faint buzzing like a small electric motor running. I had the keys in my pocket. It lasted about 3 minutes then quit. Any clue what it was?

 

What year CR-V and trim?

 

2019 EX

 

See this Honda Service News article pertaining to noises after shutting of the engine. It also applies to the 2019. 2017-2019 CR-Vs are similar.

Honda Service News Article

 

Thanks! Looks like this is it!

Noise from Under Vehicle: This noise is caused by the vacuum pump inside the fuel evaporation leakage check module (ELCM). Depending on conditions, the pump will come on for about 15 minutes about 5 to 10 hours after engine shutoff.

 

Yep, my 2018 does the same thing.

 

mine is a 2021.....does it need repair?

 

If the sound is the same as what is described in the service article posted above, there is no problem or repair needed. It is normal.

 

I cannot see the service article

 

Click the underlined words, "Honda Service News Article" in post # 4 above to open it.

Regardless, this is an image of the article:

 

Your 2021 CR-V has the same or similar components.

 

I have a 2021 also went out in the garage and heard this sound coming from the back underneath the trunk.. sound like a air pump.. the last time I drove it was about six hours ago so I looked it up and I'm being told that it's normal..

 

I have a 2010 CRV and mine is making the same noise under the trunk. Did you ever figure out if it was normal or if it needs a repair?

 

I have two 2019 CRV's Touring. This noise only happens on one. This is the noise. Please raise volume to hear noise: