Kia Optima 2014–2018 — technical service bulletin
Bulletin PI1802YZ_TSB_R5 · NHTSA communication 10203658 · issued Nov 4, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2018
model years
14
vehicle entries
Official summary
PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802Y/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 PI1802 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 the subject vehicles below returns
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.