Honda blamed the lapses on inadvertent data entry and computer programming errors, as well as a misinterpretation of the federal TREAD act, a law passed in 2000 requiring faster reporting of deaths, injuries and safety defects by automakers.
The move is likely to give more ammunition to lawmakers who are calling for a nationwide recall of cars with air bags made by Japanese parts supplier Takata.
The National Highway Traffic Safety Administration says Honda may have failed to report incidents related to Takata air bags as well as other defective parts.
U.S. safety regulators are ordering Japanese auto supplier Takata Corp. to provide more information about air bags that can explode and shoot shrapnel toward drivers and passengers.
So far, more than 12 million vehicles worldwide with air bags made by Japanese parts supplier Takata Corp. have been recalled for the problem.
The inflator mechanisms in the air bags can rupture, causing metal fragments to fly out when the bags are deployed in crashes.
A defect in the devices can possibly kill or injure the driver or passengers.
GM is on track to break the American automaker record for the most recalls in a single year, ever.
Honda Motor Co. is recalling 886,815 Odyssey minivans in the U.S. because a fuel pump cover can deteriorate and cause a fuel leak.
Slow sales caused dealer inventories to rise in January and February, putting pressure on companies to clear their lots.