Following emissions testing carried out at the behest of the French government, Renault has issued a recall for 15,800 Captur SUVs to fix a faulty emissions filtering system. The automaker, while acknowledging that there was a difference between test results and real world emission levels, denied any wrongdoing in the matter, according to news reports.

The Captur model being recalled is a 110 PS 1.5 litre DCi 110 diesel variant. In it, the faulty filter system is only activated between 17 degrees and 35 degrees Celsius – the contention is while the temperature range follows closely on that for testing (20-30 degrees Celsius), average temperatures in Paris are generally lower for a good part of the year, and so the system was not properly eliminating nitrogen oxides and sulphur.

The recall, which began last month, will see the filtration system on these cars being corrected to run in both hot and cold weather. The fix will take about half a day to complete per vehicle.

The automaker also announced it was planning a voluntary software upgrade to its emissions systems in its diesel engines, a move that could see up to 700,000 vehicles being updated. The upgrade applies only to Euro 6-compliant engines.

Renault Captur Review 20

Following Volkswagen’s dieselgate scandal, the French government initiated a probe to verify if vehicles sold in France had equivalent devices installed. An independent technical committee was formed, with emissions testing being carried out by the UTAC (French Homologation Authority). The exercise involved a total of 100 models from various manufacturers, including 25 from Renault.

Last week, it was reported that the French General Directorate for Competition Policy, Consumer Affairs and Fraud Control (DGCCRF) had carried out additional on-site and material investigations with Renault, visiting its headquarters, the Renault Technical Centre in Lardy and the Technocentre in Guyancourt.

Renault isn’t the only carmaker affected. According to French environment minister Segolene Royal, other brands have also exceeded emissions limits and have been summoned by the government, but she declined to name them.