The crash happened just before 1 a.m. Wednesday at Normandie Avenue and Martin Luther King Jr. Boulevard, according to the Los Angeles Police Department.
The man, Chris Davis, was walking down the sidewalk when he said he heard screeching and saw the LAPD car coming towards him. Footage shows the police car sliding sideways onto the sidewalk before it hit a building and nearly pinned Davis to the wall.
Davis was taken to the hospital to be treated for his injuries, but he was later released.
Two officers were in the patrol car at the time. Neither of them were injured.
The LAPD says the crash is under investigation, but that there wasn't a chase underway before. The department added it's possible the officer hit a nail, which caused a tire to deflate, which then made the driver lose control.
The building that was hit was a burger restaurant, according to the department. Some of the building's windows will need to be replaced, but the damage wasn't extensive.