jessicaknight1
Captur diesel warning light and power loss
Summary of the thread
A 2014 Renault Captur diesel is experiencing a warning light, power loss, smoke during acceleration, and strong exhaust fumes. The problem is likely related to the diesel particulate filter (DPF) or a faulty exhaust back pressure sensor, especially given the frequent short trips the car makes. The suggested solution is to have the vehicle checked at a workshop to prevent further damage. A diagnostic confirmed the issue as a defective exhaust back pressure sensor, which was subsequently replaced.
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4 comment(s)
jessicaknight1 (community.author)
Fuel consumption seems normal. No weird noises, just the usual diesel clatter. And yes, I mostly do short trips to work. Could it be the exhaust back pressure sensor then?
moritzschaefer1
Short trips are murder on diesel particulate filters. That, combined with the symptoms you're describing, strongly suggests a defective exhaust back pressure sensor. Honestly, with all that going on, I would get it to a workshop as soon as possible. Continuing to drive it in that condition could cause more damage.
jessicaknight1 (community.author)
Dropped it off at the shop this morning, and you were spot on. They ran a diagnostic, and the exhaust back pressure sensor was indeed kaput. The whole thing, sensor and labor, came to 245€ Appreciate the help!
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RENAULT
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CAPTUR
moritzschaefer1
Sounds like DPF issues. Low pressure could point to a faulty sensor. Have you noticed any changes in fuel consumption? Any unusual noises coming from the exhaust system? Has the car been doing a lot of short trips recently?