Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
ECT SENSOR COLD START MONITOR:
| ECT sensor value change |
Less than 5°C (9°F) |
ECT SENSOR SOAK MONITOR:
| Difference between current ECT sensor value and previous ECT sensor value when engine stopped |
Less than 5°C (9°F) |