(CNN) -- Honda has expanded an airbag recall worldwide to more than half a million vehicles.
The recall covers 2001 and 2002 Accord, Civic, Odyssey, CR-V, and selected 2002 Acura TL vehicles, the automaker said.
One Honda Pilot model and one Acura CL vehicle might also be affected, a spokesman said.
On its Web site late Tuesday, Honda said the driver's airbag inflators might expand with too much pressure, which can cause the inflator casing to break and could lead to injury or death.
There have been 12 incidents related to an airbag inflator problem, Honda said.
The original recall was issued in July 2009, and included 2001 and 2002 Accords and Civics, as well as some 2002 model year Acura TL vehicles.
The global recall now covers 514,000 vehicles.
Although none of the reported problems occurred after July 2009, Honda said it was still expanding the recall because it could not be sure that the inflators in the aforementioned vehicles would work correctly.
Honda said it will notify affected customers by mail and phone with instructions on how to have their vehicles inspected and updated at an authorized dealer. The entire production of each of the models in question is not necessarily included in the recall.
Last month, Honda announced a separate recall of 646,000 2007 and 2008 Fit, City and Jazz models worldwide, after a fire hazard involving a power window switch resulted in a death in South Africa.
CNNMoney's Julianne Pepitone contributed to this report