Elantra N Intake CEL (P04DB) Fix Kit

Description:

2026 Model Year Notice: A recent ECU calibration update has lowered the P04DB threshold, which may trigger a check engine light. ECU re-calibration is required to clear this code. Our previous facelift fix does not apply to 2026 calibrations.

Eliminate the P04DB Check Engine Light from installing a SXTH intake on the 2024-2025 Hyundai Elantra N with our new crankcase ventilation hose assembly. This is the only fix on the market that will not affect crankcase pressure!

This kit is included in all SXTH Intake systems starting 2/1/2026. If you already have a SXTH Intake, and you have gotten a CEL, please email us so we can send you this for free!

***This should work for every intake system available. If you still get the CEL after install, please contact us.

This hose is a direct replacement for the OEM Crankcase Ventilation (CV) hose that connects the valve cover to your intake system.

The hose works to regulate the crankcase pressure in the hose/valve cover within sensor limits when an aftermarket intake is installed.