- TVs
- Smart TV
014.40
TCL error 014.40 on Roku TV: Wi-Fi password or router block
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
Your TCL Roku TV cannot join the Wi-Fi: it is usually a wrong password or a router setting that blocks the TV. Confirm the network name and re-enter the password carefully, respecting upper and lower case.
Safety first
Stop and check this first
- Do not switch off Wi-Fi security to let the TV connect; add its MAC address to the allowed list instead.
Safe checks you can perform
- Network name and password
- TV wireless MAC address
- Network connection reset
Leave these tasks to a qualified professional
- Do not attempt this professional task: Router administrator or internet provider
- Do not attempt this professional task: TCL official support
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Router administrator or internet provider
What they doChecks MAC address filtering, access control and the Wi-Fi password on the router.
They must show youthe allowed device list with the TV's MAC.
In writingthe setting changed.
TCL official support
What they doReviews the case if the password and router are fine and the TV still will not join.
They must show youthe diagnostic steps applied.
In writingthe case number and the diagnosis.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Network name and password
- Who:
- you.
- How:
- confirm you selected the correct network name (SSID) and re-enter the password carefully, respecting upper and lower case.
- Result that matters:
- whether the TV connects.
- If it connects:
- the network or password was the cause.
- If 014.40 remains:
- check router filtering.
- Evidence to keep:
- note the network name selected.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
TV wireless MAC address
- Who:
- you.
- How:
- press Home, go to Settings, Network, About and note the address next to Wireless MAC address.
- Result that matters:
- that you have the TV's MAC address.
- If the router uses MAC filtering or access control:
- add that address to the allowed list.
- If the router does not filter:
- move on to the network connection reset.
- Evidence to keep:
- a photo of the screen with the MAC address.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
Network connection reset
- Who:
- you.
- How:
- Home, Settings, System, Advanced system settings, Network connection reset, Reset connection; then reconnect to Wi-Fi.
- Result that matters:
- whether the TV joins the network after the reset.
- If it joins:
- a saved network setting was failing.
- If not:
- ask whoever manages the router to check its restrictions.
- Evidence to keep:
- the reset time and result.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- TVs
- Brand
- TCL
- Product type
- Smart TV
Known code variants
- 014.40
- 014.41
- Error 014.40
- error 14.40
- Error code 014.40
- TCL Roku TV 014.40
What it means
TCL groups codes 014.40 and 014.41 as password or router restriction errors: usually an incorrect Wi-Fi password or a setting such as MAC address filtering or access control that stops the TV from connecting. Unlike 014.20, 014.30 or 014.50, it is not about weak signal. The code points at authentication with the router, not at a fault in the TV's Wi-Fi.
Warnings and stop conditions
- Loweditorial warning
Do not switch off Wi-Fi security to let the TV connect; add its MAC address to the allowed list instead.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
Symptoms and causes
Probable causes · in order
- Wrong Wi-Fi passwordCommon
The password is case sensitive; one mistyped character stops the connection.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
- Wrong networkPossible
The TV is trying to join another network (SSID) with a name similar to yours.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
- MAC filtering or access controlPossible
The router only admits devices on a list and the TV is not on it; other devices connect fine.
Evidence: Getting Error Codes When Connecting to Your Wireless Network
Virtual technician
Does 014.40 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Getting Error Codes When Connecting to Your Wireless Network
TCL · 2026 · official_doc
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