The front-passenger sensor system can prevent the airbags from properly deploying in a crash.
Toyota has issued a recall for new Prius V hybrids from the 2014 and 2015 model years.
The company has discovered a problem with the occupant classification system (OCS) that is responsible for activating or disabling the front passenger airbag, depending on the weight of the occupant.
"There is a possibility that some OCS's [sic] may not have been calibrated properly during the vehicle manufacturing process," the recall announcement notes. "Under some conditions, this could result in no deployment of an airbag, increasing the risk of an injury to a front seat passenger in the event of a crash."
The company claims to be unaware of any injuries or fatalities blamed on the defect.
The campaign affects approximately 5,000 vehicles, with a remedy implemented via system recalibration.