Kia Optima 2011–2015 — technical service bulletin
Bulletin PS327 · NHTSA communication 10109673 · issued Jun 25, 2014
Technical service bulletin
communication type
Equipment
component
2011–2015
model years
11
vehicle entries
Official summary
PITSTOP: RESETTING CYLINDER BALANCE ADAPTATION VALUES - When addressing a cylinder balance concern on a vehicle equipped with a 2.4L GDI engine, it is important to note that the DTC may recur after replacement of any faulty component(s) and resetting adaptive values. See this Article for information on resetting cylinder balance adaptation values.
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.