A Honda recall notice for Accord sedans might have been easy to miss since it went out the same day as a recall for 2.2 million vehicles with Takata air bags.

But a separate air bag defect affecting about 341,000 Honda Accords also deserves scrutiny, according to a Palm Beach Circuit Court class action. The plaintiffs claim air bag manufacturer Continental Automotive Systems knew about its defect for years and Honda failed to properly test the air bags.