Xerox Fault Code 043-343 May 2026

The scanner’s document feeder attempted to move a sheet of paper to the registration rollers, but the registration clutch did not engage or the sensor did not detect the paper at the expected time.

Common causes:

On most Xerox devices, the fuser is a user-replaceable unit (CRU). Xerox Fault Code 043-343

Fault Code 043-343 is triggered when the printer's internal sensors detect that the waste ink container or the overflow reservoir within the IMS is at maximum capacity, or that the mechanism responsible for removing waste ink has failed.

The logic flow is as follows:

To diagnose Code 043-343, one must understand the mechanism it monitors.

2.1 The Melting Process Unlike laser printers that fuse dry toner to paper, solid ink printers melt crayon-like ink sticks in a heated reservoir. The IMS is the assembly responsible for: The scanner’s document feeder attempted to move a

2.2 The Waste/Overflow Path During the printing process, the print head must occasionally purge ink to maintain nozzle health. This purged ink, along with overflow from the melt chamber, must be routed away. In many Xerox architectures, this waste ink is directed into a specific reservoir (often called the "puck" or waste wax container).

2.3 The "Refrigerant" Misnomer The error code text often reads "Refrigerant Full." This is a legacy translation artifact. The term does not refer to chemical refrigerants used in cooling (like Freon). Instead, it refers to the solidified waste ink "pucks" or the accumulation of wax in the waste sump. On most Xerox devices, the fuser is a