Kia Sorento 2021–2023 — technical service bulletin
Bulletin TSB_ENG257 · NHTSA communication 11026530 · issued Dec 8, 2025
Technical service bulletin
communication type
Engine
component
2021–2023
model years
3
vehicle entries
Official summary
TECHNICAL SERVICE BULLETIN: ITM REPLACEMENT AND ECM & TCM LOGIC IMPROVEMENT (CA2508) - This bulletin provides information to replace the Integrated Thermal Management Module (ITM) and then upgrade the Engine Control Module ‘ECM’ and (if applicable) the Transmission Control Module ‘TCM’ system software on certain 2021-2023MY Sorento (MQ4a) vehicles produced from September 09, 2020 through December 19, 2023. The affected vehicles may experience an illuminated Multifunction Indicator Lamp (MIL) ‘ON’ with DTC(s) P218100, P2181F0, and/or P2181F1 stored. This condition may occur due to degradation o
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.