Always Channel-159 so it could be an issue with bonding. Did you open your wall plate to inspect for any hidden splitters? Research the lights on the front of your modem. Any supposed to be green or blue if the channels are successfully bonded?
Cox tech did the install intitally, took out all the existing wiring and ran new. I doubt there's any hidden splitters as it's just one line in. New modem is all green, nothing flashing..its the netgear cm1200. Never had this issue until a month ago and now it won't stop. Driving me crazy.
Event code 16 is "OFDM profile failure". Event code 24 is "OFDM profile recovery". What you're seeing is indicative of short bursts of noise on the downstream channels. Since you're only losing profile 3 and sometimes profile 2 it's not causing you any serious issues, but it could be indicative of an issue that could get worse later. If you start seeing profile ID 1 or profile ID 0 in the event code 16 message that means it's getting worse. Event code 24 just means everything went back to normal so you don't need to worry about what's in those messages.
Something upstream from your house. Could be a bad overhead or buried cable. Could be a bad amplifier somewhere. Could be a neighbor backfeeding noise. If all of your equipment is new and working properly there's nothing you need to do. Like I said it's not causing issues until it starts to affect profile 1 or 0. It's to Cox's advantage to have everyone on profile 3 since that provides for maximum bandwidth so maybe they'll look into the problem at some point.
I am sorry we are unable to connect to your modem. This appears as if you may need someone to investigate your account personally. We would be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email us at email@example.com. Provide us the name on the account with the complete service address with a link to this thread so we can get started.