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kevinfischer7

i30 DPF Pressure Sensor Issue

I've got a 2020 Hyundai i30 diesel with 119281 km that's started showing DPF malfunction symptoms. Warning light, reduced power, smoke on acceleration, and a strong exhaust odor. Scans say the DPF exhaust pressure is too low. Could it be a defective exhaust back pressure sensor, or are there other things to check in the exhaust/emission control?

Summary of the thread

A 2020 Hyundai i30 diesel with 119,281 km exhibited DPF malfunction symptoms, including warning lights, reduced power, smoke on acceleration, and a strong exhaust odor. Diagnostic scans indicated low DPF exhaust pressure, suggesting a potential issue with the DPF differential pressure sensor, confirmed by error code P2453. The problem was resolved by replacing the defective exhaust back pressure sensor, restoring the car's performance.

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4 comment(s)

lillyfrank5

Sounds like the back pressure sensor. Is it throwing any specific error codes besides low pressure? Any chance it's just clogged?

kevinfischer7 (community.author)

The diagnostic tool returned a P2453 code, indicating a potential issue with the DPF differential pressure sensor. Could a forced DPF regeneration cycle resolve the problem if the sensor is just giving bad readings because of a partial blockage? Trying to figure out if I should try this myself or go to a professional.

lillyfrank5

P2453 confirms the sensor issue. A forced regen might help temporarily, but if the sensor's faulty, it'll likely come back. Best bet is to get it checked properly; could save you money in the long run.

kevinfischer7 (community.author)

Took your advice and consulted a mechanic. Turns out it was a defective exhaust back pressure sensor. Replaced it for 245€, and the car's running great now. Thanks for the help!

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HYUNDAI

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I30