Hyundai Elantra 2019–2020 — service campaign
Bulletin 26-01-039H DN · NHTSA communication 11036204 · issued Aug 6, 2026
Service campaign
communication type
Engine
component
2019–2020
model years
2
vehicle entries
Official summary
Certain Elantra (ADA) vehicles may have been incorrectly updated with Cylinder Noise Detection System (CNDS) software that can set DTC P132700; this software was intended only for Korean-built Elantra (AD) vehicles. In addition, the California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
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.