A no start or loss of power issue may develop if debris falls into the mass air flow sensor when changing or inspecting the air filter. Care should be taken when changing of replacing the air filter in order to avoid this issue.Google+
Car Problem Reports
Toyota Prius Stalling or Loss of Power Due to Debris in Mass Air Flow Sensor
Toyota Prius Problem
Average Mileage: 76,500 mi (28,000 mi - 185,000 mi)
Visitor, 2012 Toyota Prius, 28,000 mi
hybrid system failure after air filter change.
Visitor, 2008 Toyota Prius
Dealership said a spider had blocked airflow. They installed a new airflow meter.
Visitor, 2006 Toyota Prius, 79,000 mi
car stalled suddenly, diagnosis at repair shop was that a bug was in the mass air flow sensor.
car wont always start.car hesitates when driving