The Japanese automaker Toyota, which has been forced to recollect 1.2 million vehicles following the launch in the U. S, is planning to fix the defects found in Corolla and Matrix cars belonging to years 2005 through 2007.

The National Highway Traffic Safety Administration opened a query last November into 26 complaints of engines halting in 2006 Corolla and Matrix models, according to NHTSA records.

A lot of owners said that they suddenly started facing problems with the engine and in a few cases the engines could not be started at all. Fortunately, there have been no cases of injuries and crashes.

In a letter to NHTSA, Toyota said the stalling was because of substantial errors in the production of the vehicles' engine-control units, which it blamed on mistakes at two suppliers, one of which was recognized as Delphi.

Toyota has been investigating the matter and is certain to resolve the issues at the earliest. After a careful examination, Toyota assumed that the defect is not liable to create any perverse risk.

The Nikkei business daily cited Toyota President Akio Toyoda, describing the car maker's recent recall a painful but necessary action.