DS3 Exhaust Back Pressure Sensor Issue

I had a similar issue with my DS3. Was the engine performance affected?

Yes, the engine definitely feels sluggish. Did you also experience a decrease in power?

That confirms it. I'd recommend taking it to a workshop to have the sensor replaced. That fixed my issue, hopefully it solves yours too. I paid around 245€, if that helps.

Thanks for the insight. It's helpful to know it's likely the exhaust back pressure sensor. I will bring it in. I appreciate the advice.