Hyundai Sonata Hybrid 2012–2017 — technical service bulletin
Bulletin 21-01-024H · NHTSA communication 10190045 · issued Mar 30, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2017
model years
7
vehicle entries
Official summary
Certain vehicles listed below may experience the Check Engine warning lamp illuminated with DTC P1326. Follow the procedure to inspect the vehicle and replace the engine and/or update the engine ECU software (if new ROM is available) based on the inspection results.
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.