Kia Optima 2011–2014 — technical service bulletin
Bulletin PI1803YZ_TSB_R3 · NHTSA communication 10177732 · issued Jul 1, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2014
model years
10
vehicle entries
Official summary
PRODUCT IMPROVEMENT CAMPAIGN - ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803Y/Z_Rev3) - This bulletin has been revised to include additional information. This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1803, Rev 10, 03/16/2020) titled "Knock Sensor Detection System - ECU Logic Improvement".
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.