e4deskjet-4155e

HP DeskJet 4155e E4 error: Wi-Fi connection fix

The HP DeskJet 4155e error E4 is a wireless connectivity notification. It appears when the printer fails to reach the local wireless network. This often happens after updates to your router or if the connection credentials have changed, preventing the printer from registering its status with your devices.

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Common causes

  • 1Recent changes to router SSID or password.
  • 2Heavy interference in the 2.4 GHz spectrum.
  • 3Distance between printer and router exceeding reliable signal range.
  • 4Outdated network configurations in the HP Smart app.

Solutions

Diagnóstico rápido

If the Wi-Fi light is blinking and the attention light is solid, you are dealing with an E4 network error. If your devices can no longer discover the printer in the HP Smart app or print queue, it confirms that the network handshake has failed.

Solución paso a paso

  1. Power cycle the router by unplugging it for 30 seconds, then wait for all lights to stabilize.
  2. Reset the printer's Wi-Fi settings by holding the Wi-Fi and Cancel buttons for at least 5 seconds.
  3. Use the HP Smart app to perform a fresh installation of the printer, entering your current network credentials.
  4. Confirm network settings, specifically that the router is broadcasting on the 2.4 GHz band, which is required for this unit.

Prevención y mantenimiento

Keep the printer firmware updated through the HP Smart application. If you have an unstable network, assigning a static IP address via your router's administrative dashboard can help maintain a persistent connection.

Cuándo llamar a un técnico

If you have performed multiple factory resets and are unable to connect to any network, the internal Wi-Fi card might have failed and needs a professional inspection.

Ficha técnica del equipo

  • Technology: Multifunction Inkjet.
  • Speed: Up to 20 ppm (draft mode).
  • Connectivity: Wi-Fi 802.11 b/g/n (2.4 GHz).
  • Capabilities: Print, Scan, Copy.
  • Compatible consumables: HP 67 / 67XL series.
  • Recommended use: Home and small office connectivity.
  • Official drivers / firmware

Steps to follow

  1. 1

    Restart router

    Power cycle your router to refresh your network's IP assignments.

  2. 2

    Reset Wi-Fi

    Hold the Wi-Fi and Cancel buttons simultaneously for 5 seconds.

  3. 3

    Setup via HP Smart

    Use the HP Smart app on your phone to reconnect to the Wi-Fi network.

Frequently asked questions

The E4 error code alerts you that the printer has lost its wireless connection, usually due to router changes or signal drop-offs.

It is not critical for print functionality, but it is necessary if you require wireless printing and scanning features.

No, this error is strictly network-related and independent of ink cartridge status.

Keep the printer within range of the router and, if possible, connect to a stable 2.4 GHz frequency network.