# P0128 on the 2001 Kia Optima

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0128

- [633729](https://open.wenmarpro.com/bulletins/633729), 2002-09-24: CHANGE IN DIAGNOSTIC TROUBLE CODE P0128, THERMOSTAT MALFUNCTION, LOGIC. \*TT