How to Fix HP Printer Error: “Used or Counterfeit Cartridge Detected” After Refilling Original Ink Cartridges

Question

After refilling the original HP ink cartridges through the small top vent hole, the printer worked perfectly for a day. However, the next day, the printer displayed a message indicating that the cartridges were "used" or "counterfeit" and that they were now refusing to print. Even when sending a print job, it just shows this warning and cancels the print task after pressing “OK.” What could be causing this, and how can it be resolved?

Answer

What Happened?

The message you're seeing — “Used or counterfeit cartridge detected” — is a standard HP printer warning that typically appears when the printer identifies a cartridge that has been refilled or reused. This happens even if you use original HP cartridges that you have refilled with compatible ink.

HP printers are equipped with a cartridge authentication system. When you refill and reinstall a cartridge, the printer may still recognize its original chip data and classify it as "used." If the printer’s firmware is updated or set to strict validation mode, it may block printing entirely.

Why Did It Print Fine for a Day?

This is a key observation. The first day you used the refilled cartridge, the printer worked normally, suggesting that the chip was accepted initially. However, HP printers often run a background firmware check or perform a validation during the next boot-up cycle or ink level reading. If the printer identifies that the chip data hasn't changed (even after ink has been replenished), it flags it as reused or counterfeit.

Additionally, if you clicked “Yes” or “OK” in response to the warning message, the printer may have logged that event as an acknowledgement that you are using a non-genuine cartridge. In some firmware versions, the printer locks out the cartridge to prevent further use.

What Can You Do Now?

We recommend reviewing this detailed support guide we published on the topic:
HP Printer Error: Used or Counterfeit Cartridge Detected - Ink Sensor Warning - What to Do
(https://support.bchtechnologies.com/hc/en-us/articles/200676949)

In summary, here are some steps you can try:

1. Power Cycle the Printer
   Unplug the printer for a full minute, then restart it to reset internal error memory.

2. Remove and Reinsert Cartridges
   Carefully take out all cartridges and then reinstall them. Ensure the cartridge chips are clean and undamaged.

3. Replace the Cartridge Chip (if possible)
   Some refill kits or third-party suppliers offer replacement chips. Swapping the chip may reset the cartridge’s status.

4. Avoid Pressing “OK” When the Message Appears
   Do not confirm the warning if you haven't clicked "OK" yet. Cancelling the prompt may allow temporary continued use.

5. Use a Firmware-Bypass Solution
   Firmware downgrades or chip resetters exist for some HP printer models. However, use these at your own risk and only from trusted sources.

Final Note on Printer Repairs and Support

Fixing printer errors like this can be tricky, especially since they often involve hardware-level behaviors and chip data issues. We cannot provide remote diagnostics or technical support for printer hardware. However, we offer in-person diagnostic and repair services at our local facility. You can learn more here: BCH Printer Repair Service (https://bchtechnologies.com/printer-repair-service).

Due to high demand, our services operate on a first-come, first-served basis and may take a few weeks. We can assist with full printer repairs or part-specific replacements. However, since our service may not be the most cost-effective solution, we highly recommend exploring self-help options first.

We encourage you to explore our YouTube channel’s homepage: BCH Technologies on YouTube (https://youtube.com/@bchtechnologies). To find videos on similar issues, use the search icon next to the "About" tab on our channel. Just type in relevant keywords like "HP counterfeit cartridge" or "chip error."

Again, thank you for reaching out and for your continued support. We’re here to help you stay informed and empowered as you troubleshoot and maintain your printer.