Kia Optima 2019 — technical service bulletin
Bulletin PI1805_QA · NHTSA communication 10167211 · issued Oct 24, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019
model years
3
vehicle entries
Official summary
PRODUCT IMPROVEMENT CAMPAIGN (PI1805): QA - This document is the Question and Answer Guide for this Product Improvement Campaign to improve the knock sensor detection system (KSDS) logic.
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.