Firmware in HP CP 1215/1515/1518 printers may be causing premature toner low or toner out messages. This is caused when the user fails to update their printer firmware . This can result in cartridge failures, and premature toner low/toner out warnings...
Solution:
Update your firmware to the latest version from the HP website. This firmware update is vital to prevent cartridges failing or premature toner low/toner out messages.