sebastianwilson1

Peugeot 2008 exhaust back pressure sensor issue

I've got a 2016 Peugeot 2008, gasoline engine, with only 13060 km on the clock. Recently, the warning light lit up and I've noticed smoke when accelerating. After a quick scan, it points towards a defective exhaust back pressure sensor. Has anyone else experienced this with their Peugeot, or should I be looking at other potential causes in the exhaust system?

4 comment(s)

That sounds familiar. I had similar symptoms – warning light and smoke on acceleration – with my old Volvo a few years back. Although the car is different, could the sensor be covered in soot and giving a faulty reading? Maybe try cleaning it first?

So, you’re suggesting that the sensor itself might be okay, but just giving a bad reading due to soot buildup? Is it difficult to access and clean? Is there is a risk of damaging it?

Exactly! In my Volvo's case, it was easy to reach. I just sprayed a bit of electrical contact cleaner to remove the soot. However, given it's the exhaust system, and you're seeing smoke, I am now thinking that it would be best to seek professional help to check the whole emissions system. If it’s indeed a defective sensor, at least you'll have a precise diagnosis and repair.

I appreciate the input. I've booked it in at the workshop. It was the exhaust back pressure sensor, and with labor and parts, it came to 245€. All sorted now.

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