There is no connected camera.

isha136 wrote:

Post updating to MacOS Monterey, the camera stopped working. It should not be a hardware issue.

I have tried resetting the SMC, NVRAM, killing the camera app from the terminal.

Running Mac diagnostics gives the error code NDC001.

Can anyone help?

Hmmm...

—resetting the SMC https://support.apple.com/en-us/HT201295

—resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

(get at least two-three rounds of the chimes when holding the NRAM Reset)

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

Outside the USA

https://locate.apple.com/country

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE (800-275-2273)

Outside the USA—Contact Apple for support and service by phone

See a list of Apple phone numbers around the world.

https://support.apple.com/en-us/HT201232

What specific camera?

The one built in?

What specific MacBook Air?

If you are still on 12.0.1 try updating to 12.1 which was released 12/13/2021

There have bee previous discussions on some USB cameras not working those included some recent Logitech ones