A single dealership may have improperly installed front passenger airbags in nearly 650 vehicles.

Honda has issued a second recall for nearly 650 vehicles that may have been improperly repaired with new Takata airbag inflators.

Service technicians at a single dealership had improperly installed front passenger airbags in the initial wave of Takata airbag inflator recalls.

"If the vehicle has an incorrectly installed inflator and is involved in a crash, the passenger frontal airbag will not deploy normally, increasing the risk of injury," recall documents warn.

The botched repairs involve certain 2008-2012 Accords, 2006-2011 Civics, 2007-2011 CR-Vs, 2010-2012 Insights and 2009-2012 Fits and Pilots.

The dealership apparently notified Honda of incorrect installation. It is unclear if the company may be verifying proper installation at other locations.