Peugeot 5008 NOx Sensor Error

I had something similar on my 5008. Check engine light, error codes... Have you checked the catalytic converter? That can trigger NOx sensor errors, even if the sensor is fine.

Thanks. I hadn't thought about the cat. Did you have any other symptoms besides the light and codes? What did you do to diagnose it?

Besides the light and codes, nothing obvious. No exhaust leaks or performance issues. I took it to a workshop. They diagnosed a faulty catalytic converter messing with the NOx sensor readings.

Thanks for the insight. I took it to a workshop for a diagnosis. Turns out it was the cable and plug connection. Repair cost 95€.