Get HP Print & Scan Doctor

HP gives out free tools sometimes that can help users with their products, and HP Print & Scan Doctor is one of those. Download and install this, then run it once to see what the trouble you are facing is caused by. Resolve the HP wireless printer troubleshooting issue as directed by the program.

Restart the Printer, Router and Computer

If the PC is in experiencing an error, this could get in the way of proper connectivity or communication issues. The same hold for the printer and router as well. You may need to restart any or all of these.

• Pull out the router’s power cord.
• Turn the printer off and shut down the PC.
• Wait for half a minute.
• Re-attach the router’s power cord.
• Turn the printer and the PC on.

More Info follow this site : HP wireless printer

Use HP Smart diagnostics
Make sure you have restarted the Mac and printer. We recommend restarting your router as well.
Open HP Smart if it’s installed on your Mac.
Open the HP Smart app, click your printer, click Printers in the top menu bar, and then click Diagnose & Fix.
Follow the instructions if any issues are found.

Regards,

Will