Probe into 2014 recall of almost 1m Nissan cars

US regulators are looking into whether a recall last year by Nissan Motor Co, Japan’s second-largest carmaker, failed to fix a flaw in the air-bag control systems on almost 1 m vehicles.

The National Highway Traffic Safety Administration opened a query on March 18, citing 124 complaints filed by motorists after the recall began last April, according to a notice on the regulator’s website. Some drivers alleged the flaw persists after multiple repairs by dealers.

Nissan recalled 989,701 vehicles last year, saying the software may incorrectly classify the passenger seat as empty when it is occupied by an adult. This may lead to a failure of the air bag to deploy during a crash and could increase the risk of injury to the passenger, according to a filing with the NHTSA by the carmaker.