ottomueller4
Captur diesel injector issue
Summary of the thread
A 2019 Renault Captur diesel with high mileage was experiencing rough engine performance and a check engine light, indicating a 'reset quantity drift compensation' error. The initial suspicion was a defective injector. Before replacing parts, it was suggested to check the airflow sensors, as they can affect fuel mixture and cause similar issues. Ultimately, the problem was confirmed to be a faulty injector, which was replaced, resolving the issue.
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4 comment(s)
ottomueller4 (community.author)
Thanks for the tip! I haven't checked the airflow sensors yet; I'll add that to my list. Where exactly are they located, and is there a specific way to test them? Also, about fuel economy, how much worse is 'worse'? I haven't really kept a close eye on it lately.
stefan_silber1
Think of your engine as a finely tuned orchestra. If the airflow sensor is off, it's like the conductor is deaf. It throws everything else out of sync. While I can't give you exact locations or testing procedures (every engine is slightly different), I'd suggest taking it to a workshop for a proper diagnostic if the airflow sensor seems okay. The error code suggests the injection system might indeed be the culprit. You don't want to cause further damage by fiddling around without the right tools or knowledge.
ottomueller4 (community.author)
Thanks for the advice! I checked the airflow sensors, and they seemed fine. Bit the bullet and took it to a shop. Turns out it was a faulty injector, just like I suspected. Repair cost me 515€, but at least it's running smoothly again.
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RENAULT
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CAPTUR
stefan_silber1
Sounds like a tricky one. I've heard of similar issues with diesels. Before replacing injectors, have you checked the airflow sensors? A faulty sensor can mess with the fuel mixture and cause similar symptoms. It's like a domino effect, one thing goes wrong and the rest follows. Also, is your fuel economy worse than usual?