I get error code -3403D
I get error code -3403D when I boot up the computer and hold the D key to run diagnosis.
What`s wrong here ?
Im trying to check the battery etc.
[Re-Titled by Host]
MacBook Pro 13", 10.13
To check you battery hold the option key and click the icon in the upper right menu bar; what is the condition?
The error code is a generic code not able to connect to the server.
You can try holding the option D key and see if it connects to the AHT/Diagnostic.