Possible Causes
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- If there is a cold start and engine coolant temperature is less than 167°F (75°C).
- Defective thermostat.
- Defective cooling system.
- Defective engine coolant temperature sensor.
- Defective ECM.