TOKYO — Honda on Thursday recalled 4.9 million vehicles equipped with airbags made by the Japanese supplier Takata, a day after Toyota and Nissan announced similarly vast recalls.

The carmaker said it made the decision after conducting its own examination of airbag components from used vehicles, in collaboration with Takata. The tests “confirmed irregular internal pressure” in some inflaters.

The investigation has not been able to pinpoint the cause of the issue, Honda added.

Honda said none of the cars recalled on Thursday had been sold in the United States. It declined to give a country-by-country breakdown but said the largest number was in Japan.

More than 35 million cars and trucks containing potentially dangerous Takata airbags have now been subject to recall notices. Close to a third of the total was announced this week.