Hyundai Elantra 2024–2025 — technical service bulletin
Bulletin 26-EM-006H TSB · NHTSA communication 11029942 · issued Mar 6, 2026
Technical service bulletin
communication type
Engine
component
2024–2025
model years
2
vehicle entries
Official summary
Some Elantra (CN7) vehicles equipped with the 2.0L AKS NU PE engine may exhibit an illuminated Check Engine light for diagnostic trouble code (DTC) P218100 or P013300 which are related to the Integrated Thermal Management Module (ITM) and Oxygen Sensor monitoring. This bulletin provides instructions to update the Engine Control Module (ECM) logic to resolve the condition.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.