Authorities say the officer was driving to assist another officer when he lost control of his unit. It flipped over in the area of Zediker and South in Parlier.
The officer appeared to be okay after the crash, but an ambulance took him to Community Regional Medical Center to get checked out.
The officer's name has not been released, but Parlier Police say he's been working for the department for more than two years.
The Highway Patrol is now investigating what caused the crash.