Visitor

 • 

6 Messages

Wednesday, January 7th, 2026 12:23 AM

Chronic intermittent signal issue. Requesting Line Maintenance

Hey there,

I’ve been lost for hours with chat going nowhere and having my modem’s MAC address re provisioned for the second time in a month just to get back up and running is frustrating. A technician is scheduled for Sunday, but I think I need someone else! I’m reaching out because I’ve been dealing with a persistent connection issue that’s definitely on the street side, and I’m hoping to get a Network/Line Tech to check the local node.

I’m running a Netgear CAX80 (Broadcom chipset), and while the hardware is healthy, the signal coming in is trashed. Earlier today at 2:57 PM, I was getting a perfect 322 Mbps with an 11ms ping. But minutes later, the whole thing fell apart again.

The proof it's the line:

• Sync Loops: My logs are full of Code 16 (Loss of Sync) followed by Code 24 (Recovery) over and over.

• Packet Destruction: I’m seeing 29,346 Uncorrectable Codewords on the OFDM channel right now.

• Walled Garden: These signal drops are so bad they’re breaking the authentication, giving me 'Your connection isn't private' errors and certificate warnings.

• Network Chaos: It’s hitting every device in the house. My Apple Watch has been flooding the logs with DHCP requests just trying to stay connected while the line flaps.

My modem is pulling a solid 41.5 dB SNR, so the hardware is doing its job; it just can't handle the 'dirty gas' coming from the street.

I’ve already checked my internal wiring. Can you please skip the standard home visit and just have a Line Maintenance crew look for noise leaks at the tap or neighborhood node? I don't want to waste anyone's time with a home tech for a line failure.

Thanks for the help.

Oldest First
Selected Oldest First

Official Employee

 • 

2.2K Messages

1 month ago

 

user_4lbbcn I appreciate you doing some checks on you end, and you may need a technician at this point. Did you try any troubleshooting from our Xfinity app? 

 

Visitor

 • 

6 Messages

1 month ago

The good news is that I’m holding steady at 30k of uncorrectable codewords (same as last night after the reset, but my modem had to 'fix' over 1.7 billion packets just to stay online. Unless the normal operation of Xfinity is to have your setup repair almost half of my total traffic? Even though my signal levels look 'green' on your end, this error rate suggests the street line is physically failing. I need a tech to find the noise at the tap or node, because the hardware is clearly struggling to keep up.

Official Employee

 • 

2.1K Messages

 

user_4lbbcn our techs are very good at what they do, and they will follow the right process to identify the issue. 

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

Visitor

 • 

1 Message

Same issue here; how do I get a line check scheduled?

Official Employee

 • 

1.2K Messages

@user_tyi53k The poster stated they were able to get a technician scheduled using troubleshooting through the Xfinity app. What troubleshooting steps have you taken from your end? 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

Visitor

 • 

6 Messages

2 hours ago

Just following up that the technician arrived and found nothing wrong (of course), but then replaced two connectors between my house and the street which was enough to stop the uncorrectable codewords. And it cost me $100 in a technician visit. The underlying noise and flopping is still going on, which degrades speed, but hasn't resulted in dropping the signal as badly as before. The solution for me, unfortunately is to take my business elsewhere.

forum icon

New to the Community?

Start Here