2018–2023 Volvo XC60: Whistling or squealing at idle (PCV oil trap)
Likely causes, ranked
- Torn PCV oil trap diaphragmDIY
Real-owner fix counts will appear here as reports come in.
DIY or shop: See DIY or shop section
Parts to check
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Symptom: A loud whistle or squeal at idle that stops or changes when you take off the oil cap, sometimes with oil leaks or rough idle.
Likely causes
- Oil trap. SwedeSpeed owners trace the noise to a torn diaphragm in the PCV oil trap on top of the engine and replace the whole trap.
DIY or shop?
DIY on these models.
Useful steps
- Do the oil cap test at idle.
- Replace the full oil trap.
- Check hoses while you're there.
Vehicle focus: 2018–2023 Volvo XC60.
Safety / mechanic note
None
Recalls & service bulletins
No recalls or service bulletins are listed for this page yet.
NHTSA complaints: NHTSA complaint search returned too few keyword matches under this model name to be a reliable count.
Always check your VIN for open recalls at nhtsa.gov/recalls.
Sources
What actually fixed it?
Had this problem? Tell other owners what the real fix was. Reports are counted above; we never show made-up numbers.