Xerox Fault Code 043-343 -
| Component | Role | |-----------|------| | | A jam where paper is still present in the paper path when it shouldn't be, or missing when expected. | | 043 | Subsystem: Paper transport / Inverter. | | 343 | Specific fault: Inverter Exit Sensor (Sens 3) timing failure. |
These granular codes help determine whether to replace the entire fuser assembly, a specific thermistor, or the drive assembly.
On a scale of 1–10 (10 = easy fix), this code ranks a 6 . It’s not catastrophic, but it’s easily misdiagnosed as a simple jam. Most owners solve it with a deep clean of the inverter path. Xerox Fault Code 043-343
If you have service access (Hold 0 and Start while powering on to enter Diagnostic Mode), you can view additional sub-codes:
Follow these diagnostic steps sequentially to narrow down the source of the issue, moving from simple physical checks to board-level troubleshooting. | Component | Role | |-----------|------| | |
Based on Xwktech's article, check the following hardware components:
Sometimes, electronic control units misread sensor data. A complete power cycle can clear temporary faults. | These granular codes help determine whether to
The most frequent culprit is a physical "bind." If a toner cartridge is defective, a drum unit is seized, or a fuser is stuck, the motor cannot turn the gears. The system detects this resistance and throws the code to protect the motor from burning out. Electrical Glitch:
Internal wiring or "harnesses" connecting the motors to the power supply may have vibrated loose over time. Troubleshooting Steps