49.4C02HP LaserJet Pro MFP M428fdw

Fix HP LaserJet Pro MFP M428fdw Error 49.4C02

The 49.4C02 error code on the HP LaserJet Pro MFP M428fdw refers to a firmware or processing error, often triggered when the device receives complex data packets it cannot interpret. It is frequently caused by corrupted print files or outdated firmware. Clearing the print queue and updating the device software is the standard resolution.

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Common causes

  • 1Corrupted print job file overloading the printer buffer.
  • 2Outdated firmware version causing processing conflicts.
  • 3Network interference leading to partial data arrival.
  • 4Memory buffer overflow during large print batches.

Solutions

Diagnóstico rápido

If the error screen flashes when sending a specific document, the file itself is likely corrupted. If the screen hangs on 49.4C02 immediately upon startup without any job sent, there is a conflict in the internal memory or current firmware version.

Solución paso a paso

  1. Cancel all jobs currently sitting in the print queue on all connected PCs.
  2. Disconnect network cables or USB cords to disconnect the printer from the host computer.
  3. Perform a power cycle by turning the printer off, unplugging it for 60 seconds, and restarting.
  4. Update the firmware to the latest version directly via the HP support website to overwrite any corrupted software segments.

Prevención y mantenimiento

Avoid printing extremely large, high-resolution graphic files that may overwhelm the printer's internal memory. Keep the print drivers updated on all office machines. Periodically clear the print spooler cache on your operating system to prevent job conflicts.

Cuándo llamar a un técnico

If the 49.4C02 code persists after a firmware update and a factory reset, the formatter board may be physically damaged, requiring professional hardware replacement.

Ficha técnica del equipo

  • Technology: Laser MFP.
  • Speed: 40 ppm.
  • Connectivity: Gigabit LAN, Dual-band Wi-Fi.
  • Input capacity: 350 sheets.
  • Compatible supplies: HP 58A (CF258A) / HP 58X (CF258X).
  • Recommended use: Professional office environments.
  • Official drivers / firmware

Steps to follow

  1. 1

    Clear Spooler

    Stop and clear the Windows/macOS print spooler service.

  2. 2

    Disconnect

    Unplug network or USB cable from the printer.

  3. 3

    Hard Reset

    Power off and unplug for 60 seconds.

  4. 4

    Firmware Update

    Flash the latest firmware using a USB drive.

Frequently asked questions

No, it's a software/processing error. It will not damage the engine, but it prevents operation.

You must clear the print queue first to prevent the error from triggering again.

It uses HP 58A (standard) or 58X (high-yield) toner cartridges.

PDFs with complex layers can sometimes exceed the processing capacity of the printer's internal controller.