RoKell91

BMW X2 DPF Troubles: Smoke, Performance & Failed Tests

Hi all! Having issues with my 2018 BMW X2 diesel. Getting DPF warnings, poor performance, and heavy smoke during acceleration. Check engine light is on, and emissions test failed. The DPF won't regenerate, and I suspect it might be the exhaust back pressure sensor. Has anyone dealt with similar symptoms? What was the actual problem and how did your mechanic fix it? Any input from your experiences would help me understand what I'm dealing with. Thanks!

The conversation centers around a 2018 BMW X2 diesel experiencing DPF warnings, poor performance, heavy smoke during acceleration, a check engine light, and a failed emissions test. The suspected cause is a faulty exhaust back pressure sensor, which may prevent proper DPF regeneration. A similar issue was resolved by replacing the sensor and performing a forced regeneration, leading to improved performance and no further DPF issues. The recommendation is to consult a BMW specialist for accurate diagnosis and repair.

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Since you've already had an injector leak, it's possible that some residual fuel or exhaust fumes are still present in the engine bay, which could be causing the smell. Ensure that the area around the injectors is thoroughly cleaned. As for the DPF issue, replacing the exhaust sensor could help if it's faulty and causing incorrect readings, which might prevent proper DPF regeneration. However, it's crucial to address any potential exhaust leaks first, as they could contribute to both the smell and DPF issues. Keep us updated on your progress or if you have more questions.

Thank you very much, I will investigate your explanation.

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BMW

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