W-04EcoTank Pro ET-16680

Epson EcoTank Pro ET-16680 error W-04: Scanner fix

The Epson EcoTank Pro ET-16680 error W-04 is a security warning indicating an issue with the scanner lid or the Automatic Document Feeder (ADF). Why does my Epson EcoTank Pro ET-16680 show error W-04? The printer system detects that the lid is not correctly closed or the sensor path is blocked by debris.

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Common causes

  • 1Scanner lid or ADF left slightly open.
  • 2Debris buildup on lid contact sensors.
  • 3Physical misalignment of the scanner hinge.
  • 4Sensor mechanical failure due to wear.

Solutions

Diagnóstico rápido

The W-04 error prevents scanning tasks. Verify if the lid sits completely flush. If it does, the small pressure sensor in the scanner frame is likely stuck or dirty.

Solución paso a paso

  1. Ensure the scanner lid and ADF unit are fully closed.
  2. Gently wipe the sensor contact points in the frame corners with a dry microfiber cloth.
  3. Check for any small objects or paper bits wedged in the hinge or sensor area.
  4. Power off the device for 30 seconds and power on to reset the sensor.

Prevención y mantenimiento

Avoid slamming the scanner lid. Regular dust removal around the hinges and frame ensures the lid sensors trigger correctly every time.

Cuándo llamar a un técnico

If the W-04 error appears even after cleaning and checking the lid seal, the internal sensor switch is likely faulty and requires replacement.

Ficha técnica del equipo

  • Technology: PrecisionCore Heat-Free
  • Scanner: Flatbed with 50-sheet ADF
  • Resolution: Up to 1200 dpi
  • Consumibles: 542 series ink bottles
  • Connectivity: Wi-Fi, Ethernet, Cloud Scan
  • Drivers / official firmware

Steps to follow

  1. 1

    Check cover

    Ensure the scanner lid and ADF unit are fully closed.

  2. 2

    Clean sensors

    Wipe the sensor areas in the frame corners to clear any obstructions.

  3. 3

    Restart device

    Power off and on to reset the lid sensor recognition.

Frequently asked questions

Error W-04 indicates the scanner lid or ADF is not properly closed or a sensor is blocked.

Usually, this error only blocks scanning and copying functions.

No, it is related to physical scanner components.

Handle the scanner lid with care and keep sensors clean.