ERROR IN PRINT FAILED TO OPEN SENSOR OR DEVICE 9921

[CABCO1]

MESSAGE FAILED TO OPEN SENSOR OR DEVICE  -9921

[asmita6658]

Hi @CABCO1

Welcome to the HP Support Community. I'd be happy to assist you with the printer error.

Update your Mac to macOS 10.15.3 and also make sure HP Easy Scan is updated to the latest version. Also, please wake the printer up before scanning. 

Try updating your mac using these steps- How to update the software on your Mac

Also, try updating the printer's firmware - HP Printers - Updating or Upgrading Printer Firmware

If the issue still persists, I'd suggest you check the connectivity - 

1.) Is there any antivirus software installed on your computer?

2.) Is your printer connected using a USB hub?

While you respond to that, let's check if the printer is detected or not using these steps - 

1.) From the Apple menu, choose About This Mac.
2.) Click System Report.
3.) Under the Hardware heading on the left side of the System Information window, click USB. USB 3 devices appear under USB 3.0 Bus, and USB 2 devices appear under USB 2.0 Bus. The printer should be under the USB 2.0 Bus.

Try these steps - HP Printers - Troubleshooting a Wired Printer Connection

If the issue still persists, try step# 1 and 2 from here. 

Hope this helps! Keep me posted. 

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Have a great day!