Xerox Fault Code 043-343 May 2026

Xerox fault code 043-343 indicates a YMC (Yellow, Magenta, Cyan) Link Sensor Fail. This specific error occurs when the printer detects a mismatch between the current print mode and the state of the link sensor register, effectively stalling color printing operations. Understanding the 043-343 Fault

Feature: Xerox Fault Code 043-343 – IOT (Image Output Terminal) NVM Mismatch Detection & Auto-Recovery

Feature Overview

Automatically detects, logs, and guides recovery for Fault Code 043-343, indicating a mismatch between the Non-Volatile Memory (NVM) values stored for the IOT (Image Output Terminal – i.e., the print engine) and the actual hardware configuration or expected firmware defaults. Xerox Fault Code 043-343

The sequence of events leading to 043-343: Xerox fault code 043-343 indicates a YMC (Yellow,

: A mismatch of print mode and YMC link sensor driven state register information. Primary Causes Faulty or misaligned YMC link sensor Damaged or worn drive assembly gears Locate the fuser (usually two blue levers to release it)

  1. Locate the fuser (usually two blue levers to release it).
  2. Slide the unit out carefully.
  3. Visually inspect:

    If the error persists, technicians often use the dC330 diagnostic mode to isolate the hardware failure: