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victoriaghost10
Kuga NOx Catalyst and Exhaust Leak
4 comment(s)
victoriaghost10 (Author)
Fuel efficiency does seem diminished. Where on the exhaust system was the problem in your case?
walter_eule22
Mine was at a joint just before the catalytic converter. Get it checked, it might be the same issue. I advise you to have it thoroughly inspected at a workshop.
victoriaghost10 (Author)
Just to let you know, the exhaust system had a leak as suspected. The NOx storage catalyst aging warning was a knock-on effect. Repair cost came to 265€ Thanks for the guidance; it was invaluable.
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walter_eule22
I had something similar with my Kuga. Check the exhaust system thoroughly for leaks, especially around the joints and flex pipe. A small leak can throw off the sensor readings and cause that error. Is your fuel efficiency also affected?