HYUNDAI
26-EM-009H TSB
Manufacturer communications
- Publication date
- 2026-03-24
- Received by NHTSA
- 2026-03-30
- NHTSA record numbers
- 11030329
Manufacturer summary
Original wording in English
Some Sonata (DN8) and Tucson (NX4/NX4A/NX4M) vehicles equipped with the 2.5L Theta III GDI engine may display a warning lamp and store Diagnostic Trouble Code (DTC) P2B59F0, which relates to the Integrated Thermal Management Module (ITM) circuit due to a logic error. This bulletin provides instructions to update the Engine Control Module (ECM) logic to correct this condition.
Reported code forms
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