S80 smoking exhaust back pressure sensor

Hey, I'm having a weird issue with my 2014 Volvo S80 (gasoline engine). I'm getting a warning light and it's puffing out smoke like a chimney when I accelerate. My car has 125683 km. I'm guessing it is something related to the exhaust system. Has anyone dealt with anything similar? Could it be the exhaust back pressure sensor?

4 comment(s)

I had something similar happen with my S80. Is it impacting your engine performance at all?

Yeah, the engine definitely feels a bit sluggish. Does that confirm your suspicions? What was the fix?

Yep, sounds like the exhaust back pressure sensor to me. I ended up taking mine to a workshop. It's not something you want to mess with if you don't have the right tools and know-how.

Thanks for the heads-up! I took it to the workshop, and you were spot on, it was a defective exhaust back pressure sensor. Cost me 245€ to get it replaced, but now it's running smoothly again!

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