Hyundai Kona 2018–2020 — technical service bulletin
Bulletin 20-FL-006H · NHTSA communication 10177129 · issued Jun 9, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018–2020
model years
4
vehicle entries
Official summary
This bulletin provides information related to the Engine Control Module (ECM) software logic update for DTC P0300-P0304 Misfire. This update addresses an incident of intermittent misfire that may only occur at cold engine warmup.
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.