E0 error on HP printer 2721e

[Tanguy2]

Hello even though I changed the 2 ink cartridges on my printer HP DeskJet 2721e, I I still have a E0 message on the printer and it does not want to work. I dont know how to solve this issue

[Kuroi_Kenshi]

Hi @Tanguy2,

Welcome to the HP Support Community! 

Thanks for reaching out about your query regarding your printer!

We're thrilled to have the opportunity to assist you and provide a solution.

Try these steps:

Check Ink Cartridge Installation:

• Open the cartridge access door.
• Ensure that both ink cartridges (tri-color and black) are properly seated in their corresponding slots.
• Remove and reinstall the cartridges to make sure they are correctly positioned.

Clean Ink Cartridge Contacts:

• Turn off the printer and unplug it from the power source.
• Remove the ink cartridges.
• Use a clean, lint-free cloth or cotton swab slightly dampened with distilled water to clean the copper-colored contacts on the cartridges.
• Clean the contacts inside the printer where the cartridges go.
• Wait for the cleaned areas to dry completely before reinstalling the cartridges.

Reset the Printer:

• Turn off the printer and unplug it from the power source.
• Wait for about 60 seconds.
• Plug the printer back in and turn it on.

Perform a Printer Alignment:

• After reinstalling the cartridges, the printer might prompt you to align them.
• Follow the on-screen instructions to perform an alignment.

Update Printer Firmware:

Kindly refer to this link to update your printer firmware.

I hope this helps.

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Best regards,