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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 301 (Engine Control System (2ZR-FAE) - Diagnostic Codes (2 Of 8)) >> SFI System >> DTC P0128: Thermostat [03/2019 - 11/2022] >> Monitor Strategy

Monitor Strategy

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Related DTCs P0128: Coolant thermostat (judgement by simulated engine coolant temperature)
P0128: Coolant thermostat (judgement by engine coolant temperature change at high vehicle speed)
Required Sensors/Components (Main) Thermostat
Engine coolant temperature sensor
Required Sensors/Components (Related) Intake air temperature sensor
Vehicle speed sensor
Frequency of Operation Once per driving cycle: Judgment by simulated engine coolant temperature
Continuous: Judgment by engine coolant temperature change at high vehicle speed
Duration 280 seconds: Judgment by simulated engine coolant temperature
-: Judgment by engine coolant temperature change at high vehicle speed
MIL Operation 2 driving cycles
Sequence of Operation None