Honda Humming Sound - Honda Cars & Trucks

try fuse 36

copy and paste
https://www.autogenius.info/honda-civic-2007-fuse-box-diagram/

I'm no Honda expert so I'm not sure if an 02 has a "key off" evap system. If it does that may be what you're hearing. A lot of newer cars will run evap tests while the vehicle is off. It basically pulls vacuum on the fuel tank with an electric motor to test the integrity of the evaporative emissions system and opens / closes vacuum switching valves.

sounds like the wheels are out of balance, is there a slight vibration through the steering wheel at this speed? and does the problem stop if you go faster (please drive carefully)

The symptoms match those of wheel bearings getting worn out. One sure way to determine it is not coming from the transmission is by taking the vehicle to a decent speed, say 35 MPH ,and put it in neutral. If the humming continues unchanged, then it comes from bearings, and if it drops, then it might come from transmission or engine. 135000 miles is way over the life expectancy of a set of bearings.
If the bearings are starting to fail, they produce a high pitch sound, almost a whistle, and if they are almost gone, they produce a deep rumble. High speed turns might subdue the sound, or make it worse, depending on if you take weight of bearings, or increase it.

Does it sound at all like a fan? My Honda will auto start a fan that continues to cool the engine after I come to a stop as well. Is it possible you might be hearing the same thing?

are you sure it is a humming noise and not a vibration

It could be the ABS. MY HONDA DOES THE SAME THING.
I took it to PepBoys yesterday and they could not connect to the
computer interface.They said I need to take it to a honda dealer
so they can connect and determine what is wrong with the
Automatic breaking system. The noise is the ABS motor
turning on and off.

ck pwr str fluid for low level no 2 sounds like wear detector on brake pads. tire wheel off ck pads see it wear indicator is in contact with rotor

hope2help shack

always go with the honda service tech for they are trained in ut specific car models.. they both can be right though... the noise may be from ur auto tensionor and or ur a/c compressor..those models have problems with the a/c clutch pulley bold breaking off and have problems with the a/c compressors blowing up

this is either a loose belt, or low power steering fluid. Remember that Honda uses a diffrent power steering fluid from everyone else. Make sure it is a Honda compatable fluid, or you will get leaks.