Hyundai Santa FE 2016–2021 — service campaign
Bulletin 26-01-013H TSB · NHTSA communication 11028669 · issued Feb 6, 2026
Service campaign
communication type
Engine
component
2016–2021
model years
12
vehicle entries
Official summary
Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. This bulletin provides instructions for updating the Engine Control Module (ECM) to address this 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.