Technical Service Bulletin #TB2025-07
Hyundai Elantra N Takeda Intake | Code P04DB Fix
Affected Part Numbers:
- 56-70057R / 56-70057D | Sealed Takeda Momentum Cold Air Intake System w/ Pro 5R or DRY S Filter
- 56-10057R / 56-10057D | Open Takeda Stage-2 Cold Air Intake System w/ Pro 5R or DRY S Filter
Affected Vehicles:
- 2025–2026 Hyundai Elantra N 2.0L (t)
Issue:
The 2025–2026 Hyundai Elantra N may experience a check engine light with code P04DB (Crankcase Ventilation System Disconnected) after installation of these Takeda Intakes.
Solution:
This issue has been resolved with a redesigned tube and fitting to create the proper airflow in the crankcase.
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As of January 2026, these updated components have been implemented in production.
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We do not recommend the use of any other fix for this issue, including the use of a check valve.
Action Required:
If reporting P04DB after installing these intakes on a 2025–2026 Elantra N:
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Contact aFe POWER Technical Support
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Request the revised tube (Part Number 59-90006).
- Submit a Tech Support Ticket HERE
- Reference this technical bulletin on your submittal along with your proof of purchase.
At aFe POWER, we take pride in delivering high-quality, performance-driven products engineered in-house from start to finish. When rare issues like this arise, our team responds quickly to ensure your vehicle runs at its best. We stand behind our products and we’re here to support you every step of the way.
– aFe POWER Team
Our POWER Professionals are Here to Help.
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Call us at 1-951-493-7101 or shoot us an email.
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We’re available to talk Mon–Fri 8am–4pm PST.
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Factory Store: 232 Granite St. Corona, CA 92879
