Hi @MK279,
Welcome to HP Support Community.
Thank you for posting your query, I will be glad to help you.
The E0 error on your HP DeskJet 2722 indicates an issue with the cartridge setup, which could be due to a miscommunication between the printer and the cartridge. Since replacing the cartridge hasn’t resolved it, let’s try a few steps to re-establish proper functionality.
Reset the Printer:
- With the printer on, unplug it from the power source.
- Wait 60 seconds, then plug it back in and turn it on.
- This resets internal components and can often help clear errors.
Check the Cartridge Contacts:
- Open the cartridge access area and remove the color cartridge.
- Inspect the copper contacts on the cartridge and inside the printer for any dust or ink buildup. Gently clean both with a lint-free cloth.
- Reinsert the cartridge securely.
Run the Cartridge Alignment:
- Go to the HP Smart app, open “Printer Maintenance,” and try running a cartridge alignment. This can sometimes reinitialize communication.
Use HP’s Diagnostic Tools:
- Within the HP Smart app, look for a diagnostic option or “Print Quality Tools” under the printer’s settings. Running these tests may prompt the app to recognize the cartridge and complete the setup.
Remove and Reinstall the HP Smart App:
- Sometimes, the app can hold onto an old error code. Uninstall and reinstall the HP Smart app to clear cached data and refresh its connection to the printer.
I hope this helps.
Take care and have a good day.
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Alden4
HP Support