Hey guys, Jules here!
I'm seeing a lot of people experiencing the weasel error code since the update, and I think I'm seeing a link between players using their mobile app while playing Destiny. Do me a favor and try closing your app while playing and see if your connection gets better, then answer in the poll. Be sure to post a comment with specifics on your situation!
Post here about your experiences/issues with this error, lets keep them all in one place until we hear back from Bungie on it. Just remember to be patient! When new things are rolled out it sometimes takes a little while to get all the kinks out!
Hope this helps, and as always-
Good luck out there, Guardians!
The app isn't the issue for me, it's using the mobile vault that starts up the weasel plaque.
What I found that helped is unplugging the power brick and plugging it back in after a few seconds. This issue for me was on Xbox One using the Destiny Companion app on ios 8. Worth a shot if you haven't found a solution and want to try this out.