https://en.wikipedia.org/wiki/Voyager_1#Communications
Resolves when scientific data resumes or power runs out.
Related questions
NASA's Voyager 1 spacecraft finally phones home after 5 months of no contact
While the Voyager 1 spacecraft still isn't sending valid science data back to Earth, it is now returning usable information about the health and operating status of its onboard engineering systems.
Optimism:
https://spacenews.com/nasa-optimistic-about-resolving-voyager-1-computer-problem/
A NASA official says he is optimistic that a problem with the Voyager 1 spacecraft that has kept it from transmitting intelligible data for months can be resolved.
[...]
the problem appears to be a corrupted memory unit on the spacecraft. “It’s a part failure on one of the memories and they’re looking for a way to move a couple hundred words of software from one region to another in the flight computer,” he said.
@benjaminIkuta Dumb luck plus sheer determination. It's one of humanity's greatest achievements, I'm sure they'll keep trying until they're certain it'll never come back.
I think it's very, very unlikely. But that won't stop them from trying.