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Home >> Kia >> 2020 >> Soul GT Line Turbo >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (Engine Control System Diagnosis - 2.0L (2 Of 6)) >> DTC P0128-00: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> DTC Information >> DTC Description

DTC Description

WARNING: This page is about a different variant/trim than selected.

An open stuck thermostat means an increase of the engine warm up time and can cause emission increase as well. To detect open stuck thermostat, the PCM checks measured coolant temperature as soon as calculated coolant temperature reaches threshold and sets DTC P012800 when measured coolant temperature is lower than threshold. If same code is set again in the next driving cycle, MIL is illuminated.

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