Kia Optima Hybrid 2011–2015 — technical service bulletin
Bulletin TT067 · NHTSA communication 10089849 · issued May 22, 2015
Technical service bulletin
communication type
Electrical System
component
2011–2015
model years
5
vehicle entries
Official summary
"tech tip: dtc p1a89 - dc/dc converter current sensor fault symptom: dtc - mil p1a89 dc/dc converter current sensor fault and illuminated battery charging system warning lamp in the cluster. Repair: use gds/kds to check the ldc output current under ldc > current data (see image). If the output is zero amps, this may indicate an internal failure of the ldc module inside the hybrid power control unit (hpcu). Replacement of the hpcu will be necessary."
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.