Kia Optima 2019 — technical service bulletin
Bulletin PI1805YZ_TSB · NHTSA communication 10249001 · issued Jan 12, 2024
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019
model years
3
vehicle entries
Official summary
TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT (PI1805Y/Z) - This bulletin provides information related to the Technical Service Bulletin previously published in (PI1805) titled "Knock Sensor Detection System - ECU Logic Improvement" for certain 2019MY Optima (JFa), Sorento (UMa) and Sportage (QL) vehicles equipped with a 2.4L GDI or 2.0L T-GDI engine. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/
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.