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Home >> Toyota >> 2015 >> Highlander LE Plus, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (SFI System [2GR-FKS] - Diagnostic Codes - (Except Hybrid) (1 Of 4)) >> SFI System >> DTC P0128-00: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) [11/2016 - ] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
Related DTCs P0128: Coolant thermostat
Required Sensors/Components (Main) Thermostat
Engine coolant temperature sensor
Required Sensors/Components (Related) Intake air temperature sensor (for mass air flow meter sub-assembly)
Vehicle speed sensor
Frequency of Operation Once per driving cycle
Duration 1190 seconds (w/ stop and start system)
990 seconds (w/o stop and start system)
MIL Operation 2 driving cycles
Sequence of Operation None
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