hermann_walter23

Captiva DPF Exhaust Pressure

I've got a 2014 Chevrolet Captiva diesel with 153886 km on the clock. Recently, a warning light popped up, engine power is down, there's smoke when I accelerate, and a strong exhaust smell. I think it might be DPF related, like the exhaust pressure is too low. Any ideas?

A 2014 Chevrolet Captiva diesel exhibited issues such as a warning light, reduced engine power, smoke during acceleration, and a strong exhaust smell, suspected to be related to the DPF and low exhaust pressure. The problem was identified as a faulty exhaust back pressure sensor, which can cause improper DPF regeneration and incorrect pressure readings. Replacing the sensor resolved the issues, restoring normal vehicle performance.

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4 comment(s)

Hey, I had similar issues with my Captiva. Sounds like your DPF isn't regenerating properly. Have you checked the exhaust back pressure sensor? A defective sensor can cause all sorts of problems, from reduced engine power to excessive smoke. You might also want to check for any leaks in the exhaust system.

Where exactly is that sensor located? And how would a leak in the exhaust system affect the DPF?

The sensor is usually located near the DPF itself, somewhere along the exhaust pipe. A leak upstream can mess with the pressure readings, making the ECU think the DPF is cleaner than it actually is, or vice versa. Best get it checked at a workshop.

Thanks. Turns out it was indeed the exhaust back pressure sensor. Replaced it, cost me 245€, and now everything's running smoothly again.

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CHEVROLET

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CAPTIVA