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jakobflame63

Presage warning light and power loss

Hi, I have a 2000 Nissan Presage with a diesel engine. Recently, the warning light in the speedometer came on, and the engine power is noticeably reduced. Also, there's smoke when accelerating and a strong exhaust smell. The mileage is at 69837 km. Could this be related to the particulate filter? I suspect the exhaust back pressure might be too low.

Summary of the thread

A 2000 Nissan Presage with a diesel engine is experiencing a warning light, reduced engine power, smoke during acceleration, and a strong exhaust smell. These symptoms suggest potential issues with the diesel particulate filter (DPF) or exhaust back pressure. A possible cause could be a malfunctioning exhaust back pressure sensor. It is recommended to take the vehicle to a workshop for proper diagnosis and repair to avoid further damage.

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4 comment(s)

MannyBayer

Sounds like DPF issues, alright. I had similar problems with my Presage. Is it trying to do a DPF regeneration and failing? What codes are you pulling?

jakobflame63 (community.author)

I'm not sure about the regeneration. How can I check the codes? I don't have an OBD reader.

MannyBayer

Yeah, without reading the codes, it's hard to be sure. Given the symptoms, low pressure could be the culprit, especially the exhaust back pressure sensor. Honestly, I'd bite the bullet and take it to a workshop; they'll diagnose it properly. My sensor was borked and it cost around 245€ with labor. Cheaper than messing about and potentially knackering something else.

jakobflame63 (community.author)

Thanks, that's really helpful. I'll take it to a shop and have them check the exhaust back pressure sensor. Hopefully, that's the issue. I appreciate the advice!

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NISSAN

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PRESAGE