Pathfinder exhaust back pressure sensor issue

Hey there, I've got a Pathfinder too, though not sure about the year. Your symptoms sound very familiar. I had similar issues with the warning light and smoke, but not the DPF part. Did you check the sensor connections or try cleaning it before jumping to a replacement?

Thanks for the quick reply! I did check the connections, and they seem fine. I haven't tried cleaning the sensor itself, though. Was your issue definitely the exhaust back pressure sensor, and did replacing it solve the problem for you?

Yep, replacing the exhaust back pressure sensor completely resolved the issue for me. Given the smoke and the warning light, and the fact that you’ve already checked the connections, I'd say it’s highly likely that's your problem too. Although, since your DPF isn't regenerating either, it might be worth getting it checked out by a workshop to be 100% sure there isn't something else going on.

Thanks a lot for the advice! I really appreciate it. I took it to the workshop, and you were right – it was the exhaust back pressure sensor. Replacement cost me 245€. Everything's running smoothly now.