Nissan NV NOx Catalyst Aging Errors

My 2020 Nissan NV with a gasoline engine is giving me fits. The check engine light is on and the computer is throwing NOx storage catalyst aging errors, plus I'm getting exhaust leaking. I suspect it is tied to a leak in the exhaust system somewhere, but I wanted to see if anyone else ran into this before I start tearing things apart. It's got 105968 km on the clock.

4 comment(s)

I had a similar problem with my NV. Same symptoms as yours: check engine light, NOx errors, and a whiff of exhaust. Has the car had any recent automotive repair work done?

Thanks for the reply! No, I have not touched anything recently. Where did you find the exhaust leak on yours? Maybe I can narrow down my search area.

It's hard to say, given that leaks can occur in multiple places. Considering your NV's mileage, it might be the NOx catalyst reaching the end of its lifespan. To be honest, I took mine to a workshop that specializes in nitrogen oxides, and it was diagnosed pretty quickly.

Thank you! I appreciate the confirmation; I'll take it to my mechanic for professional car diagnostics. It sounds like my concerns regarding NOx emissions will be resolved by replacing the NOx catalyst and fixing the exhaust, which is estimated to cost 265€. Thanks again for your help!

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