402ES4131dn

Error 402 OKI ES4131dn: Fix and Causes

The OKI ES4131dn error 402 occurs when the unit does not correctly detect the toner or drum unit. This prevents the printer from starting a job to ensure output quality. The ES4131dn is a compact laser printer well-suited for modern office tasks.

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Common causes

  • 1Improper toner installation
  • 2Damaged consumable chip
  • 3Dirty sensor contacts
  • 4Drum reading error

Solutions

Diagnóstico rápido

Code 402 is a common communication failure between the cartridge chip and the print engine. Verify original toner usage.

Solución paso a paso

  1. Restart: Power cycle for 60 seconds.
  2. Inspection: Open the panel, remove toner, and reinsert.
  3. Clean: Wipe contacts with a dry cloth.
  4. Test: Turn on to verify.

Prevención y mantenimiento

Always use original consumables to ensure chip compatibility. Keep contact areas clean.

Cuándo llamar a un técnico

If the error persists after swapping the cartridge, the detection board might be failing.

Ficha técnica del equipo

  • Technology: Monochrome Laser
  • Speed: 40 ppm
  • Connectivity: USB, Ethernet
  • Consumable: ES4131 Toner
  • Usage: Small Office
  • Official Drivers / firmware

Steps to follow

  1. 1

    Restart

    Power cycle the printer.

  2. 2

    Inspection

    Verify toner seating.

  3. 3

    Clean

    Clean the toner sensor.

Frequently asked questions

It is a consumable detection error.

Usually, the printer locks until resolved.

ES4131 series.

Around every 25,000 prints.