Kia Optima 2011–2014 — technical service bulletin
Bulletin PI1803YZ_TSB_R4 · NHTSA communication 10183313 · issued Nov 12, 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) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. 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" equipped w/THETA II engine. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of
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.