Truck-maker Volvo says it has detected that an emissions control component used in certain markets is degrading more quickly than expected, which could cause the engines to exceed NOx emission limits.
The largest volume of potentially affected engines has been sold in North America and Europe. The company said the degradation did not seem to affect all vehicles and engines in the same way and to the same extent.
The degradation did not pose a safety risk or negatively affect vehicle performance in areas other than emission control.
“All products equipped with the component meet emissions limits at delivery; the degradation is due to a materials issue that occurs over time.”
The company said it was now in the process of informing the appropriate authorities in various markets and beginning discussions regarding remedial plans.
And it warned: “A full analysis of the issue and plans with regulatory authorities are not completed and the company is therefore not yet able to estimate the volume of engines or vehicles that may need to be addressed. Consequently it is not possible to assess the financial impact at this stage; however the cost to redeem the issue could be material.”