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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 463 (Engine Control System (SFI) - Diagnostics) >> DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria Threshold
  1. Estimated engine coolant temperature
75°C (167°F) or more
  1. #(2) Engine coolant temperature sensor output value
Less than 75°C (167°F)
Duration period of both (1) and (2) 5 seconds or more