Hi Will!
Checked at Sony's, but this error code isn't there in the database.
When I search for it, most people think it's related to the WiFi chip, but there is no concrete cause. So they assume it's the WiFi chip.
Just to check, does the disc drive still work? As in making sounds?
Do you have another spare USB drive? Would try this as well. Make sure that you have the "PS5 Console Reinstallation File". And not the update file!
You can download the software here: https://www.playstation.com/en-us/support/hardware/ps5/system-software/
When did this happen btw? Just out of nowhere? Was something already broken before, or not?