Kia Optima 2011–2014 — technical service bulletin
Bulletin PI1803WX_TSB_R5C · NHTSA communication 10174430 · issued Apr 2, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2014
model years
10
vehicle entries
Official summary
Product improvement campaign: tsb - engine replacement instructions for dtc p1326 (pi1803w/x) - closed - this bulletin has been superseded by pi1803y/z.
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.