Hey everyone, my 2018 Infiniti Q50 Red Sport 3.0t has been acting up lately. A few times now, while accelerating, it suddenly loses power and goes into what feels like limp mode. The check engine light comes on, and there's a noticeable high-pitched whine from the engine bay, especially under load. It feels like the turbos aren't spooling correctly, or maybe there's a boost leak. After restarting the car, sometimes the power returns, but the CEL often stays on. I'm worried about driving it like this. Has anyone experienced this with their VR30DDTT engine?
2018 Q50 3.0t Red Sport in Limp Mode - Reduced Power & Turbo Whine
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Robert C. · rep 0 · May 22, 5:02 AM · 1 replies · solved · Question
✓ Accepted solution
ClearTheCode Admin
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ClearTheCode guidance (Infiniti · Engine & drivetrain)
Summary: For 2018 Q50 3.0t Red Sport in Limp Mode - Reduced Power & Turbo Whine, work through these steps on your 2016+ vehicle:
- Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
- Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
- Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
- Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
- Test the common fix — follow model-specific service procedures; one change at a time.
- Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.
Owner reported: Hey everyone, my 2018 Infiniti Q50 Red Sport 3.0t has been acting up lately. A few times now, while accelerating, it suddenly loses power and goes into what feels like limp mode. The check engine light comes on, and there's a noticeable high-pitched whine from the engine bay, especially under load. It feels like the turbos aren't spooling correctly, or maybe there's a boost leak. After restarting …
This is educational guidance, not a substitute for hands-on diagnosis.