DTC P0128-00: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) [06/2017 - 08/2018]: Description

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

This DTC is stored when the engine coolant temperature does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P0128-00	Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)	All of the following conditions are met for 5 seconds or more (2 trip detection logic): Cold start. The engine is warmed up. The engine coolant temperature is less than 75°C (167°F).	Water inlet with thermostat sub-assembly Engine cooling system Engine coolant temperature sensor ECM	Comes on	DTC stored	SAE Code: P0128 DTC for Mexico Models: Does not apply