e4Tango X Smart Home

HP Tango X Smart Home E4 error: Connection fix

The HP Tango X Smart Home E4 error signifies a Wi-Fi connection failure. Because this model relies exclusively on cloud-based operation via the HP Smart app, the E4 error prevents all functionality until connectivity is restored. Resolve this by resetting your network settings and re-syncing the printer to your router.

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Common causes

  • 1SSID or Wi-Fi password changes.
  • 2High interference from nearby routers or Bluetooth devices.
  • 3IP address conflicts within the local network.
  • 4Outdated firmware failing to handshake with the router.

Solutions

Quick Diagnosis

The E4 error is shown when the wireless status light turns amber and the printer becomes invisible to your app. If other devices connect fine, the printer's network cache likely needs refreshing.

Step-by-Step Solution

  1. Power cycle router: Turn off your Wi-Fi router for 30 seconds to refresh the network table.
  2. Reset wireless settings: Hold the wireless button on the back of the Tango X for 5 seconds until it flashes.
  3. Re-run setup: Open HP Smart on your smartphone to initiate the network setup wizard.
  4. Check network band: Ensure your mobile device is connected to the same 2.4GHz Wi-Fi band as the printer.

Prevention and Maintenance

Update your printer firmware via the HP Smart app regularly to ensure compatibility with modern router protocols. If your network is complex, consider setting a static IP reservation for the printer to prevent connection drops.

When to Call a Technician

If multiple setup attempts fail and the wireless LED does not behave as expected, the Wi-Fi module might be failing, necessitating a professional hardware inspection.

Technical Specifications

  • Technology: Thermal Inkjet
  • Print Speed: Up to 11 ppm
  • Connectivity: Wi-Fi Dual Band (2.4/5 GHz)
  • Capacity: 50 sheets
  • Consumables: HP 303 / 64 series
  • Usage: Smart Home
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Power cycle router

    Turn off your Wi-Fi router for 30 seconds to refresh the network table.

  2. 2

    Reset wireless settings

    Hold the wireless button on the back of the Tango X for 5 seconds until it flashes.

  3. 3

    Re-run setup

    Open HP Smart on your smartphone to initiate the network setup wizard.

  4. 4

    Check network band

    Ensure your mobile device is connected to the same 2.4GHz Wi-Fi band as the printer.

Frequently asked questions

The E4 error signals a network communication failure, meaning the printer is unable to connect to your Wi-Fi network.

No, the Tango X is designed for wireless operation and must have a stable connection to function.

This model supports the HP 303 or 64 series ink cartridges. Check your regional compatibility before purchasing.

Regularly update the printer firmware and keep your router within a reasonable distance for signal stability.