Ford Ikon NOx Error and Exhaust Leak

My 2012 Ford Ikon gasoline engine has 169150 km. The check engine light is on, showing a NOx storage catalyst aging error. There's also an exhaust leak. Could the leak be the cause?

4 comment(s)

I had a similar issue with my Ikon. Check the exhaust manifold gasket and the flex pipe. Those are common leak points that can throw off the NOx readings.

Thanks. Were your symptoms the same, and did you see a drop in fuel efficiency before fixing it?

Symptoms were the same. Fuel efficiency took a hit. Get it checked professionally; exhaust leaks can be tricky.

Understood. It was an exhaust system leak, like we thought. Cost 265€ to repair. Thanks for your help.

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