printer door open error but door not open & cartridges secure

[MikeFori]

My print jobs will not execute because of an error stating that the printer door is open.  I have repeatedly open and closed the printer door and have made sure that the print cartridges are secure.  I have restarted the printer, unplugged the printer, and rebooted my computer, none of these solves the problem.  

[Garp_senchau]

Hi @MikeFori,

Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

Check for Obstructions or Jammed Paper

• Open the printer door and ensure that no paper is jammed inside. Even a small piece of paper can trigger an error message like this.
• Check the paper path and make sure that everything is clear. Also, check the output tray and surrounding areas for any possible blockages.

Verify the Ink Cartridge Area

• Open the ink cartridge access door again. Make sure the cartridges are seated properly, and ensure nothing is obstructing the area (like small pieces of paper or packaging materials).
• Remove and reinsert the cartridges carefully, ensuring they snap into place securely.

Check the Door Sensors

• The printer uses sensors to detect if the doors are fully closed. These sensors could be dirty or misaligned.
• Use a soft cloth to clean the sensor area near the door, which may have accumulated dust or ink residue.
• If you can spot any misalignment, gently adjust the sensor to ensure it is positioned correctly.

Inspect the Rear Door (if applicable)

• Some printers have an additional rear door that may need to be securely closed.
• Make sure that any rear access doors are also closed tightly.

[Garp_senchau]

Firmware Update

• Sometimes, this error can be triggered by an outdated firmware version.
• Check for updates on the HP website for the OfficeJet Pro 9018, and install any firmware updates if available.

Reset Printer Settings

• Reset the printer to factory settings (this may vary by model, but it’s usually found in the printer's settings menu or control panel).
• This can help clear any software-related errors that might be causing the "door open" warning.

Try a Hard Reset

• Turn off the printer and unplug it from the power source.
• Wait 5-10 minutes, then plug it back in and turn it on.
• This can sometimes clear out any lingering errors and reset the internal system.

Check the Printer's Control Panel

• If you’re still getting the error, see if the control panel shows any additional error messages or guidance on what's causing the issue.
• Sometimes the printer may provide more information (like if it detects an issue with the door latch or door sensor).

Test on a Different Computer

• If possible, try printing from a different computer or device. This will help determine if the issue is printer-specific or computer-specific.

I hope these steps help resolve the issue

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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