E4LaserJet Tank MFP 2604sdw

HP LaserJet Tank MFP 2604sdw error E4: Network Fix

The HP LaserJet Tank MFP 2604sdw error E4 typically appears when the device loses connection with the wireless network. This code prevents the printer from receiving documents, frustrating workflow in modern offices. Understanding what does error E4 mean on HP LaserJet Tank MFP 2604sdw allows the user to perform a quick network diagnostic without external intervention.

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Common causes

  • 1Password change: Router Wi-Fi credentials have been updated.
  • 2Interference: Physical obstacles or other nearby electronics.
  • 3Dynamic IP: Address conflict on the local network.
  • 4Weak signal: The device is too far from the access point.

Solutions

Diagnóstico rápido

If the Wi-Fi icon is flashing alongside code E4, it confirms the printer has lost authentication with the network or its IP address has expired. Ensure other devices have Internet access to rule out a general router failure.

Solución paso a paso

  1. Turn off the router and wait 30 seconds before turning it back on.
  2. Press and hold the wireless button on the printer for 5 seconds to reset network settings.
  3. Open the HP Smart app on your mobile device and scan for the printer to reconfigure Wi-Fi.
  4. Verify that no MAC filters or firewall settings on the router are preventing device connection.

Prevención y mantenimiento

Assign a static IP address in network settings to avoid disconnections due to DHCP lease expiration. Keep the router firmware updated to ensure full compatibility with HP devices.

Cuándo llamar a un técnico

If the E4 error persists after reconfiguring the network via USB, the internal Wi-Fi module may be defective.

Ficha técnica del equipo

  • Technology: Laser printer with wireless connectivity.
  • Speed/approximate throughput: 23 ppm.
  • Connectivity: Wi-Fi 802.11b/g/n, USB 2.0.
  • Feed capacity: 250 sheets.
  • Compatible consumable: HP 154A/154X toner refill kit.
  • Recommended use: Environments with mobile printing.
  • Official drivers / firmware

Steps to follow

  1. 1

    Restart router

    Turn off and back on your Wi-Fi router to refresh the IP address allocation.

  2. 2

    Network reset

    Press the Wi-Fi button on the printer panel to activate setup mode again.

  3. 3

    App reconfiguration

    Use the HP Smart app from your smartphone to re-establish the connection to the printer.

Frequently asked questions

Error E4 indicates a wireless connection failure or a Wi-Fi network conflict. It means the printer cannot communicate with the router.

No, it is a connectivity error that can be resolved via software and network settings.

No, it only prevents file reception if you print wirelessly. The toner reload system remains operational.

Place the printer closer to the router or add a Wi-Fi range extender if the distance is too great.