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02-28-2022 06:20 PM - last edited on 09-19-2025 08:50 AM by BellDRock
Today my bell internet Fibre 50 FTTH stopped working. My device still showed connection to the Wifi but there was no internet. The modem showed “Error 1201 - Low fibre signal Check fibre connection”. Restarting modem couldn’t fix the problem.
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❗AI Summary:
Users experiencing the "Error 1201 - Low fibre signal
" have identified several potential causes and solutions, primarily pointing to issues with the physical fibre optic connection. The error indicates that the modem is receiving a weak or no light signal through the fibre optic cable, preventing internet access.
Key causes identified by the Bell Community:
Discussions in the Bell Community Forum and other online platforms highlight a range of possible reasons for the error:
- Damaged or disconnected fibre optic cable: This is the most commonly cited cause. The cable could be cut, bent, or damaged externally, such as by landscaping activities. It could also be disconnected at the street-level utility box.
- Faulty or improper connections: The error can occur if the fibre optic cable is not securely connected to the modem or the wall socket. Additionally, the end of the fibre optic cable that plugs into the modem can become dirty and obstruct the signal. In some cases, the connector itself may be faulty.
- External infrastructure or equipment problems: Issues with your Bell modem or other network equipment can lead to this error. Issues may originate from outside the home, such as a problem at a node or demarcation point.
- Incorrect provisioning: A less common but possible cause is a "speed profile" or programming error on the user's account, which would require correction by Bell.
Solutions and troubleshooting steps from the Bell Community:
Forum members and Bell moderators have suggested several troubleshooting steps, ranging from simple checks to requiring technical help:
- Basic troubleshooting: The initial steps include rebooting the modem and ensuring the fibre optic cable is securely connected. However, users often report that a simple reboot does not resolve this specific error.
- Cleaning the fibre connector: Some users have had success by carefully unplugging the fibre optic cable from the modem (holding it by the green housing) and cleaning the tip with a lint-free cloth and rubbing alcohol.
- Use Virtual Repair: The Bell Community Manager recommended using Virtual Repair
. This tool can check for local outages, inspect external equipment, reboot your system, and optimize settings. If the issue persists, the tool can help schedule a technician visit. - Check for outages: It's worth checking if there is a known service outage in your area. How to check for Internet outages in your area
or Outage Check
. - Contact Bell Support: Should the above fail to identify or resolve the issue, a technician may be required. Technicians can diagnose and repair issues with the external wiring, connectors, or other infrastructure problems that are beyond the user's control. Should you need to book a technician, reach out using Live Chat
or you can dial *611 from any Bell mobile device.
Solved! Go to Solution.
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04-24-2024 06:24 PM - last edited on 04-25-2024 07:17 AM by BellDRock
Good evening. Everything was working since the morning, but when I came in the evening, my modem glows red and says error 1201 "problems with fiber optic cable". What should I do?
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04-24-2024 09:04 PM
Error 1201 – Low fibre signal
- Error message: Check fibre connection
What to do: Try our Virtual repair tool, which detects and fixes most issues.
It's also possible they are performing work or upgrades in your area, so a modem reboot might not be a bad idea either.
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08-21-2025 11:59 PM - last edited on 08-22-2025 07:20 AM by BellDRock
I am getting An error Code1201.. Lower Fibe connection issue..
Any.one else face the same connectivity issue?
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08-22-2025 06:25 AM - last edited on 08-22-2025 07:21 AM by BellDRock
Good Day.
Error code 1201 signifies a low or lost fiber optic signal, preventing internet, TV, and phone services. Which Bell modem do you have?
Have you tried to run the Bell Virtual repair tool ? This detects and fixes most issues.
The Virtual repair tool will:
- Look for service outages in your area
- Check the equipment outside your home
- Reboot all your hardware
- Optimize the settings for your service
If it can’t solve the problem, the tool will even help you book a technician appointment.
If you are unable to run this tool, or it does not work, reboot your modem, by powering it completely off, unplug it from the power source, wait 30 seconds, & plug it back in. This process can take upwards of 5 minutes to complete.
If you still get error 1201 after completing these steps, please call Bell Internet Tech support: 1 866 310-BELL (2355)
Troubleshooting Tools & Help
Internet: troubleshooting tools, virtual repair tool and support
Take care.
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11-30-2025 04:28 PM - last edited on 12-01-2025 09:22 AM by BellDRock
Hi all,
I'm desperate since tech support doesn't seem to want to solve this.
My connection drops every day at various points, usually in the morning. Sometimes a few minutes, often for about 30-40 minutes. Error code 1201.
They've checked the lines, they've replaced the modem. No change.
I'm at a total loss as to what to do next.
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11-30-2025 05:41 PM - last edited on 12-01-2025 09:23 AM by BellDRock
Error 1201 – Low fibre signal
- Error message: Check fibre connection
What to do: Try our Virtual repair tool, which detects and fixes most issues.
Chances are high the virtual repair tool will not be able to fix this, in which case you will need physical tech to check this out. Could be a bad connector, a bad cable etc...
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12-02-2025 02:15 PM
Hi there @BF14
Thank you for your post and welcome to the Community.
We wanted to check in to see if you're still experiencing issues with error 1201? If so, can you please provide some further information?
What model modem do you have?
Have you tried rebooting your modem?
Are you able to disconnect the Fibre Optic cord from the back of the modem, wipe off the tip of the cord gently to ensure the cord is clean and plug it back in (repeat this on the other end of the cord) to see if it resolves the issue? Additionally, have you checked the cord to ensure there is no visible damage?
Looking forward to hearing back.
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