Voyager 1 is currently unable to transmit any scientific or systems data back to Earth. The 46-year-old NASA spacecraft is capable of receiving commands, but a problem seems to have arisen with the probe's computers.

NASA's Voyager 1 probe in interstellar space can't phone home (again) due to glitch

Source: space
Source Link: https://www.space.com/voyager-1-flight-data-system-glitch