The stricken capsule had been making some peculiar noises while docked at the International Space Station.
The pair had been expecting to return to Earth within mere days, but so far they've been in space for over two months.
Boeing's long-troubled alternative to the SpaceX Crew Dragon has made it off the launchpad with two astronauts on board.
Boeing's reusable crew vehicle had aimed to dock with the station this week but things didn't go quite to plan.
The new design is lighter and less bulky than the spacesuits worn by the space shuttle astronauts.