SvenZim

Talisman exhaust back pressure sensor issue

Hi, I'm having issues with my 2017 Renault Talisman diesel with 102454 km. The engine warning light is on, and the car has reduced power, especially uphill. There's also smoke when I accelerate, and a strong exhaust smell. I've checked fluid levels. Could it be DPF issues? Any ideas?

A 2017 Renault Talisman diesel with 102,454 km is experiencing engine warning lights, reduced power, smoke during acceleration, and a strong exhaust smell. These symptoms suggest potential issues with the Diesel Particulate Filter (DPF) or the exhaust back pressure sensor. The recommended solution is to have the exhaust back pressure sensor checked by a professional, as it may require diagnostic tools to confirm the fault. Replacing the faulty sensor resolved the issues, restoring engine power and eliminating smoke and exhaust smell.

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4 comment(s)

Sounds familiar. I've got a Talisman too, and I had similar symptoms not too long ago: reduced power, smoke. Have you checked your exhaust system? In my case, it was the exhaust back pressure sensor. That's the first thing I'd investigate.

Thanks for the quick response! The exhaust back pressure sensor, huh? Where is that located? Is it something I could check myself, or is it best left to a mechanic? How did you figure out that was the problem?

The sensor is usually located near the DPF. While you could try to check it yourself, you'll likely need a diagnostic tool to confirm if it's faulty. Given the symptoms – the warning light, reduced power, and smoke – I'd strongly recommend getting it checked by a professional with the right tools. DPF regeneration problems are nasty if left untreated.

Okay, thanks a lot for the advice! I took it to the workshop today, and they confirmed it was indeed the exhaust back pressure sensor. The final repair cost was 245€. Replacing it seems to have solved the issues. No more smoke, the engine power is back, and the exhaust smell is gone. Really appreciate the help!

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RENAULT

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TALISMAN