Kia Carnival 2025 — technical service bulletin
Bulletin SC333_TSB · NHTSA communication 11019471 · issued Jun 5, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2025
model years
1
vehicle entries
Official summary
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: ENGINE CONTROL MODULE LOGIC IMPROVEMENT (SC333) - This bulletin provides information to upgrade the ‘Engine Control Module’ (ECM) system software on certain 2025MY Carnival (KA4) vehicles equipped with 3.5L GDI Lambda Ⅲ engines produced from April 15, 2024 through November 27, 2024. The subject vehicles may have been produced with engine calibration that may cause the vehicle to release air pollutants that exceed Federal and California standards and cause the illumination of the Malfunction Indicator Lamp (MIL) with DTC P046100. These standards were establ
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.