richardsky4
S80 Diesel Reduced Engine Power
Summary of the thread
The issue of reduced engine power, rough running, and jerking on acceleration in a 2011 Volvo S80 diesel, accompanied by a loud hissing noise and increased fuel consumption, is suspected to be caused by a defective switch in the intake manifold control. The persistent P2015 error code points to an intake manifold flap position sensor/switch issue. A similar problem in another vehicle was resolved by addressing the intake manifold, suggesting that professional inspection and repair are necessary to fix the issue.
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4 comment(s)
richardsky4 (community.author)
I'm getting a persistent P2015 code, which points directly to an intake manifold flap position sensor/switch issue. Did your Opel throw the same code, or something similar?
tim_light3
That P2015 code rings a bell. I remember the mechanic mentioning something about the intake manifold needing a complete overhaul. Seeing as you're getting that code and experiencing similar symptoms to what I went through, I'd say it's highly likely you're on the right track with your diagnosis. I'd recommend getting it checked out by a professional. It cost me about 500€ back then, but it fixed the issue completely.
richardsky4 (community.author)
Your advice and the comparison to your Opel experience solidified my suspicion. I took it to my local independent Volvo specialist. The repair cost 465€ but resolved the problem completely. Thank you again for your help!
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VOLVO
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S80
tim_light3
That sounds eerily familiar! I had almost the exact same symptoms with my 2014 Opel Insignia a couple of years ago: reduced power, rough idle, and a weird jerking feeling when I tried to accelerate. The hissing noise is a big clue, too. I didn't check the intake manifold control myself, but the mechanic mentioned something about airflow being all over the place. What kind of error codes are you getting, if any?