DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0128

THERMSTAT FNCTN

[Coolant thermostat (coolant temperature below thermostat regulating temperature)]

Diagnosis condition

--

Signal (terminal)

Engine Coolant Temperature Sensor signal

Threshold

The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.

Diagnosis delay time

--