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henryjohnson50
Xsara diesel smoke and DPF issues
4 comment(s)
henryjohnson50 (Author)
Thanks for the info. I haven't checked the sensor readings directly. I'm not sure where it is located. Do you have any hints on where to find it?
dirk_schwarz1
The sensor is located within the exhaust system. Given your symptoms, including the failure of DPF regeneration, it's highly probable that this sensor is defective. I strongly suggest visiting a repair workshop for a professional diagnosis. It cost me around 245€ to replace it.
henryjohnson50 (Author)
Thanks for the advice. I took it to a local mechanic, and you were right, it was the exhaust back pressure sensor. Replaced it, and problem solved!
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dirk_schwarz1
I had very similar symptoms with my Xsara. In my case, the exhaust back pressure sensor was indeed the culprit. Have you checked the sensor readings with a diagnostic tool?