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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Engine Performance >> System >> SFI System [2GR-FXE] - Diagnostic Codes - (Hybrid) (2 Of 3) >> SFI System >> DTC P0128: Thermostat [02/2014 - 08/2014] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

Duration that both of the following conditions are met 5 seconds or more
Estimated engine coolant temperature 75°C (167°F) or higher
Engine coolant temperature sensor output Less than 75°C (167°F)