DETROIT - Honda Motor Co. says it will temporarily cut production at its North American auto factories on a plant by plant basis, starting Wednesday, due to parts shortages.

The company says in a statement that it will keep all plants open. But it will cut the number of hours that some assembly lines operate each day. Cuts will vary by plant and model.

Honda says the factories will remain open because most of the parts in cars built in North America come from the region. But the company says it gets a small number of parts from Japan, where production at supply factories was hampered by a March 11 earthquake and tsunami.

The statement didn't say which North American plants would cut production or what models they make. Honda has factories in Ohio, Indiana, Alabama, Georgia and Ontario.

"All plants are remaining open, but some are reducing production at varying levels from day to day," Honda spokesman Richard Jacobs said in an email Tuesday night.

He said the Canaidan plant in Alliston, Ont., would be among those affected.

"There will be no layoffs. When non-production hours occur, production associates will have the option to work, schedule vacation or take time off without pay," Jacobs said.