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How to solve Toner Cartridge communication or detection error on Dell Laser Printers

Summary: This Article provides Information about Toner Error 093-940/941/942/943 Toner CRUM communication error and how to solve it.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

Table of Contents

 

Error description

One of the following errors is shown on the Printer display. This error can be caused by a defective Toner-Cartridge or Printer and when using non Dell-Toner-Cartridges.

Code Code description
093-940 / 093-941 / 093-942 / 093-943  Toner Cartridge Comm Fail Cause:
093-940: Toner CRUM (Y) communication error is detected.
093-941: Toner CRUM (M) communication error is detected.
093-942: Toner CRUM (C) communication error is detected.
093-943: Toner CRUM (K) communication error is detected.
093-970 / 093-971 / 093-972 / 093-973  Toner Cartridge Detached Cause:
093-970: The Toner Cartridge (Y) is not installed in the printer.
093-971: The Toner Cartridge (M) is not installed in the printer.
093-972: The Toner Cartridge (C) is not installed in the printer.
093-973: The Toner Cartridge (K) is not installed in the printer.

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Cause

Not Applicable

Resolution

Solution

For the above error codes, proceed with the following troubleshooting steps:

  1. Locate the TONER CARTRIDGE Connectors
    SLN301369_en_US__1connector-loc-c1765DNF
    Figure 1: Location of the Cartridge Connectors
  2. Check the installation of the TONER CARTRIDGE and check the behavior of the connectors:
    SLN301369_en_US__2toner_error_093_bild1 SLN301369_en_US__3toner_error_093_bild2
    Figure 2: Normal Connector Figure 3: Damaged Connector
     
    Note: Damaged Toner-Connector is not covered in standard warranty and cannot be repaired within warranty.

     
  3. Reseat the TONER CARTRIDGE and make sure it is properly installed.
  4. If after the above step the error is still present, REPLACE the TONER CARTRIDGE.
    Note: Use only Dell branded Toner. If third-party Toner is used, Dell cannot ensure the proper function of your Dell Printer.
  5. If after a POWER OFF/POWER ON cycle the error code is still present, contact the Dell technical Support.

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Affected Products

Legacy Printers
Article Properties
Article Number: 000136175
Article Type: Solution
Last Modified: 21 Oct 2025
Version:  6
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