Honda will halt production at most of its factories in the U.S. and Canada due to supply issues.

In a statement, the automaker cited “the impact from COVID-19, congestion at various ports, the microchip shortage and severe winter weather over the past several week,” as reasons for the halt in production.

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Honda hasn’t specified the timing and length of production adjustments at its plants but confirmed to Auto News that things “could change.” It added that workers impacted by the pause in production “will continue to have the opportunity to work at the impacted plants.” Plants impacted are located in Ontario, Ohio, Alabama, and Indiana but Honda’s Mexican factories have not been impacted.

Honda hasn’t said how many vehicles will be affected by the stoppage but confirmed “purchasing and production teams are working to limit the impact of this situation.” The car manufacturer typically produces around 30,000 vehicles a week in the United States and Canada.

This isn’t the first time Honda has had to alter manufacturing plans this year. In early January, the company confirmed it would cut production due to the ongoing chip shortage, joining a plethora of other car manufacturers also impacted by supply issues.

The semiconductor chip shortage has impacted most automakers and was triggered by increased consumer demand for electronics throughout 2020 and car manufacturers cutting orders due to the Covid-19 pandemic. Hyundai is one of the only brands not affected by the shortage as it began stockpiling chips in late 2020.