MacBook Pro's shutting down in sleep

Please try the following, in order. Stop at any step where the issue is resolved:

1. Create a new standard user account.
   • How: System Preferences > Users & Groups > "+" button
   • Why: Create a new user account to log into to determine if the current user account is problematic. Let the notebook enter sleep mode to see if it continues to shutdown.
2. Reset your Mac's SMC.
   • What: Reset the System Management Controller (SMC) on your Mac- Apple Support
   • How: Hold down the <shift><control><option> keys, and then, press the power button. Hold all of them for, at least, 10 seconds.
   • Why: Resets fans, keyboard backlight, status indicator, battery indicator, display backlight, power button, close/open the lid, sleep or shut down, battery doesn't charge, MagSafe indicator light incorrect status.
3. Boot up your Mac in Safe Mode.

   What: Use safe mode to isolate issues with your Mac- Apple Support

   How: At boot-up, hold down the <shift> key until the Apple logo appears on the screen.

4. Run Apple Diagnostics to uncover any hardware issues with your Mac.
   • How to use Apple Diagnostics on your Mac - Apple Support
   • Apple Diagnostics: Reference Codes - Apple Support
5. Run an EtreCheck report and post it here so that we can help diagnose any issue that we may uncover with your Mac.
   
   • You can download EtreCheck Pro fromhere or download it from the Apple App Store.
   • Start EtreCheck from a normal user account. Optionally, you can run it from a user account with Administrator privileges for additional details.
   • Select a problem from the drop-down menu to enable the "Start EtreCheck" button. Optionally, you can add comments on what issues your Mac is experiencing, especially to aide others with similar Mac issues.
   • Click on Start EtreCheck
   • Allow the program to run to completion.
   • When done, select Report from the left-side window to display it.
   • Select the "Share Report" icon.

     Select Copy Report

   • Paste the report to your reply post. (Note: The EtreCheck report does NOT contain any personal information.)
   • Ref:Using EtreCheck- ASC (etresoft)
6. Make a Genius Bar appointment at your local Apple Store or Apple Authorized Service Provider.
   • Check Your Service and Support Coverage- Apple Support
   • For getting the right support, here's a genius idea- Apple
   • To contactApple Supportdirectly.