E1 error when printing test page

[NolanOhana]

I am able to print photos and documents in any size no problem but when I try to print a test page from the app or print sheets from my silhouette app (think like a cricit) it will feed the paper in then freeze up and just shoot it out. I keep getting e1 e1 error when trying to print a test page no matter what size paper I put in. I have reset everything to factor settings, uninstalled the drivers and reinstalled, done everything from every video I have seen online and nothing has helped.

It all started with a paperjam that was so bad we had to take the top of the printer off to get it out and now I am having all of these problems. I have replaced print heads and that didn't help at all. So long as I select the document directly from my computer I can print it but nothing from any app and no test print page will work. I don't even know what to do at this point. PLEASE HELP! My printer is my only form of income...

[Max3Aj]

@NolanOhana, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
I understand how frustrating this must be, especially when your printer is essential for your work. Based on your description and the E1 error on the HP Smart Tank 5101, here's a step-by-step guide to help resolve the issue:
The E1 error typically indicates a paper size mismatch or paper feed issue. Since you mentioned the issue started after a severe paper jam and now affects test pages and app-based prints, it's likely related to internal sensor misalignment or firmware confusion.

Step-by-Step Troubleshooting

Check Paper Settings in Printer and App

• Ensure the paper size set in the HP Smart app matches the actual paper loaded.
• On Windows:
  • Go to Control Panel > Devices and Printers.
  • Right-click your printer > Printing Preferences.
  • Set the correct paper size (e.g., A4 or Letter) and paper type.

Reset the Printer Again (Hard Reset)

• Turn on the printer.
• Disconnect the power cable from the printer and wall outlet.
• Wait 60 seconds.
• Plug it back in and turn it on.

Clean and Recalibrate the Printer

• Use the printer’s control panel or HP Smart app to:
  • Clean printheads
  • Align printheads

Update Firmware

• Outdated firmware can cause compatibility issues with apps.
• Use the HP Smart app or visit: Official HP® Support

Check Internal Hardware (Post-Jam Damage)

Since you had to disassemble the printer, it’s possible a sensor or cable was misaligned:

• Inspect the paper feed rollers and sensors for any debris or misalignment.
• If you're unsure, it may be best to contact HP support for a hardware diagnostic.

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support