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014.40

TCL Roku TV

Severity: Moderate

Source: OnlyErrorCodes.com — Every error code. One place.

TCL Roku TV Error Code 014.40 — Wi-Fi Connection Fix

What it means

TCL Roku TV 'Error code 014.40' is the wireless connection failure code documented on TCL's own support pages at support.tcl.com/rokutv-troubleshooting and support.tclusa.com.
The verbatim message: 'Your TCL Roku TV cannot connect to your wireless network.'
It fires when the TV sees your Wi-Fi network in the available list and tries to join but can't complete the connection — distinct from 014.30 (weak signal) and 014.50 (similar connection failure on different network types).
The most common causes are a wrong password, a 5GHz-only network the TV doesn't support, or router security set to WPA3-only.

Affected Models

  • Every TCL Roku TV model (TCL 4-series, 5-series, 6-series, 8-series, QM series)
  • TCL 32S325, 40S325, 43S425, 50S425, 55S425, 65S425 and similar Roku-powered models
  • TCL Q-Mini LED and QLED models running Roku OS
  • Same error code appears on Element, Hisense Roku, and Onn Roku TVs (Roku OS is shared)
  • Error 014.40 wording is consistent across all Roku TV brands

Common Causes

  • Wi-Fi password typed wrong (the on-screen input doesn't show what was typed, so easy to mistype)
  • Network is 5GHz only — older TCL Roku TVs are 2.4GHz only; check your model
  • Router security is WPA3-only — many TCL Roku TVs only support WPA2
  • MAC address filtering on the router and the TV's MAC isn't whitelisted
  • Router rebooted or password changed since the TV last connected

How to Fix It

  1. Re-enter the Wi-Fi password.

    Settings > Network > Set up new connection > Wireless > pick your network from the list > carefully re-type the password.
    TCL's password input shows dots, not the actual characters, so a single typo causes 014.40 every time.
    If your password has special characters (-, _, &), watch the keyboard layout — the Roku on-screen keyboard sometimes hides them in alternate keysets.

  2. Confirm you're picking the right network.

    If your router broadcasts both a 2.4GHz and a 5GHz network with similar names (MyWiFi vs MyWiFi-5G), make sure you select the 2.4GHz one — older TCL Roku TVs don't support 5GHz.
    If your router uses band steering (same name for both bands), temporarily separate them into distinct SSIDs and pick the 2.4GHz one explicitly.

  3. Restart both the TV and the router.

    Power off the TV completely.
    Unplug the router from power for 30 seconds.
    Plug the router back in and wait 2 minutes for it to fully boot.
    Power the TV back on and retry the connection.
    A simple power-cycle on both ends clears most one-off 014.40 events.

  4. Change router security to WPA2.

    Newer routers default to WPA3 or WPA3-only, which older TCL Roku TVs don't support.
    Log into your router admin (usually 192.168.1.1 or 192.168.0.1).
    Find Wireless > Security.
    If it's set to 'WPA3-Personal' or 'WPA3 only', change to 'WPA2/WPA3 mixed' or 'WPA2-Personal'.
    Save.
    Retry connecting the TV.

  5. Disable MAC filtering temporarily.

    If your router has MAC address filtering enabled, the TCL Roku TV's MAC may not be in the allowed list.
    In router admin > Advanced > MAC filtering > disable temporarily.
    Try the TV connection.
    If it works, find the TV's MAC address in TCL Settings > Network > About, add it to the router's allowed list, and re-enable filtering.

  6. Try a phone hotspot to isolate the issue.

    On your phone, set up a 2.4GHz hotspot (iPhone: Settings > Personal Hotspot > Maximize Compatibility on; Android: Hotspot settings > AP band 2.4GHz).
    Connect the TCL Roku TV to the hotspot.
    If it connects cleanly, your home router is the cause — focus the next steps on the router.
    If 014.40 happens with the hotspot too, the TV's Wi-Fi module may be at fault.

When to Call a Professional

TCL's published fix for 014.40 is straightforward owner-side troubleshooting — TCL doesn't need to send a tech for this.
Only if the TV can't connect to any 2.4GHz network including a phone hotspot does the TV's Wi-Fi module itself become suspect — at that point TCL warranty service or an external streaming stick (Roku Streaming Stick, Chromecast) are the two practical options.

Frequently Asked Questions

I can connect with the password on my phone but the TV still gets 014.40 — what's different?

Three things differ between phone and TV.
One: the phone may be on 5GHz while the TV needs 2.4GHz — same network name, different band.
Two: the phone supports WPA3 while the TV only supports WPA2 — newer routers may negotiate WPA3 with the phone and refuse to fall back to WPA2 for the TV.
Three: the phone's MAC may be in a 'guest' or 'always allow' list on the router while the TV's MAC isn't.
The MAC filtering check (step 5) and the WPA2 fallback (step 4) together resolve the vast majority of 'phone works, TV doesn't' cases.