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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 177 (Engine Control System (2GR-FSE) - DTC P0010 - P0159) >> 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 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL MALFUNCTION THRESHOLDS

Duration that both following conditions 1 and 2 are met: 5 seconds or more
1. Simulated ECT 75°C (167°F) or more
2. ECT sensor output Less than 75°C (167°F)
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