Stalling or Loss of Power Due to Debris in Mass Air Flow Sensor on Toyota Prius

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.

RepairPal Verified
Average mileage: 75,321 (28,000–185,000)
11 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007, 2008, 2009, 2010, 2012
21 people reported this problem
6 people shared problem details
2012 Toyota Prius28,000
hybrid system failure after air filter change.
2006 Toyota Prius102,000
Car conked out while driving. Lost power then shut itself off. Check engine light came on along with BIG RED exclamation point! Mechanic diagnosed, not sure how he came to the mass air flow meter, but that's what they are doing now. I had checked the air filter yesterday...was not aware of any debris that could have fallen down there, but am horrified to think I caused the problem!
2012 Toyota Prius60,000
Car stalls and all warning lights come on. Diagnostic show code P0101 MAF. Hose was tightened but happened a month later.
Dealership said a spider had blocked airflow. They installed a new airflow meter.
2006 Toyota Prius79,000
car stalled suddenly, diagnosis at repair shop was that a bug was in the mass air flow sensor.
car wont always hesitates when driving
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