When I turn on the self cleaning oven, it makes a loud buzzing noise. Is this normal? If not, what needs to be fixed and how do I do it?

About 6 times a week we see 'Self Clean' cycles that break ovens. Try removing the mains plug or turning off the breaker for an hour. If that doesn't fix it, you will need a service call on you mystery make appliance. It could be the thermostat burnt out or the control board frazzled.

Self Clean oven temperature is about 880 degrees Fahrenheit.
Self-Clean Ovens
The oven is cleaned by heat, at temperatures above normal cooking temperatures. During the cleaning cycle the oven is heated to about 880 degrees Fahrenheit (471° C.). At this temperature, food soils inside the oven decompose, leaving behind a small amount of ash.

If you unplugged it then the noise can't be coming from the range.

There is a cooling fan for upper and lower oven they run at the same time no matter which oven in use it is fed from the oven manager no way to trouble shoot without pulling oven out some models use same fan for both so you could have a blower on hand remove back panels to access fans take a lead off fan to determine which one noisey

Fan is bad or blades are bent hitting frame

If the lock does not open after the oven has cooled down, then try this: First, unplug the range or shut off the circuit breaker for ten minutes. Plug the range back in or turn on the circuit breaker. Set the clock and try moving the door lock lever or opening the door. Next, set the self-clean cycle again and only allow it to work for twenty minutes. Cancel the self-clean cycle and allow the oven to cool. Gently try moving the door lock lever or opening the door

Sensor inside oven towards the back two screws remove and unplug sensor replace with new one. Sensor burns out when using the self clean feature. New sensor $15-$20

this sounds like the gas solenoid valve you may need to change the coil on the solenoid valve

Hi

does the noise start as soon as you turn the fan oven on?
does the noise stop as you turn off?
just depending what make and model you have there is two fans
in it 1 is the fan motor inside oven at back and other
is the cooling fan which is at top of oven .you just need
to find out which one it is and just replace . then should be back to normal

regards dan

yes, if the humming is not the loud sound then the fan may need some lubrication or if it is tripping the circuit it will need replacing , but if it seems like it is a viberating noise from the fan , then it could be that its bearings are bad , but the whole fan motor would still need to be replaced , but if it sounds like it just may be a loose fan motor , then tightening up the screws on the motor would stop the vibrating sound and or the fan blades from scraping metal( another sound you may be hearing )

what you are describing is the cooling fan. That fan will come on to keep the electronic control panel cool. It is normal for tat to come on even if your done with the oven. I dont think is should be as loud as you describe. I would try the oven again and if it is still loud I would call for service because it is new. That fan will also come on when you use the self clean cycle.