Auris Diesel Smoke and Power Loss

I've got a 2015 Toyota Auris diesel with a warning light and reduced engine power. There's also acrid smoke and a pungent odor from the exhaust when I accelerate. Could this be a particulate filter issue? It's only done 29306 km. I've read it could be a defective exhaust back pressure sensor?

4 comment(s)

I have a similar issue with my Auris. Reduced power, smoke, and the warning light sound familiar. Have you checked the exhaust back pressure sensor? It's a common failure, and relatively inexpensive to replace. Is the car struggling to regenerate?

How do I know if it's struggling to regenerate? Are there specific indicators? Could a faulty sensor really cause the strong exhaust smell?

Mine failed to regenerate due to a faulty sensor, that's how the mechanic found out. The smell comes from the soot building up because the filter isn't being cleaned. Considering your symptoms and mileage, I'd advise a workshop visit for a diagnostic assessment.

The exhaust back pressure sensor was indeed defective, just as you suggested. The total repair cost was 245€. Thanks again for your help!

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