maryweiss87

HRV Diesel Particulate Filter Pressure Too Low

I have a 2019 Honda HRV with a diesel engine, mileage is at 119731 km. Lately, a warning light appeared and I've noticed a reduction in engine power. There's also smoke when accelerating and a strong exhaust smell. I scanned the car, and it shows 'Diesel particulate filter exhaust pressure too low.' Could a defective exhaust back pressure sensor be the culprit, or is there something else I should investigate in the emission control system or exhaust system?

A 2019 Honda HRV with a diesel engine exhibited a warning light, reduced engine power, smoke during acceleration, and a strong exhaust smell. The diagnostic scan indicated 'Diesel particulate filter exhaust pressure too low.' The issue was suspected to be a defective exhaust back pressure sensor. After replacing the sensor, the symptoms were resolved, confirming it as the cause.

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4 comment(s)

I also drive an HRV with a diesel engine and experienced similar issues. I'd start by checking the exhaust back pressure sensor, as you suggested. Have you checked for any obvious damage to the sensor or its wiring?

Thanks for the input. No visible damage to the sensor or wiring. Was the exhaust back pressure sensor the cause of your issues as well, or was it something else?

In my case, replacing the exhaust back pressure sensor resolved the problem. However, I would still advise a thorough inspection at a workshop to rule out other potential causes within the diesel engine or particulate filter.

Thanks, I appreciate the advice. Turns out it was indeed the exhaust back pressure sensor. Got it replaced for 245€, and all symptoms are now gone.

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HONDA

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HRV