Kia Optima 2014–2018 — technical service bulletin
Bulletin PI1802WX_TSB_R7C · NHTSA communication 10174388 · issued Apr 2, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2018
model years
14
vehicle entries
Official summary
Product improvement campaign: tsb_r7 - engine replacement instructions for dtc p1326 (pi1802w/x) - closed - superseded by pi1802y/z.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.