Answer to: error code remove and check print cartridgesI changed the date on the printer to the year 2009 (currently 2017) and all is good. You need to go through the reset process explained by many above and be very quick to get to the "fax setup," then "date and time," and enter a dummy date at least 4 years ago. Reading through many strings I saw a comment that the HP printers will not accept cartridges older than 4 years. Worked for me. If for some reason HP finds a work around, I am going to buy a new printer and it will not be a HP. Best of luck!