DTC P0116 - Engine Coolant Temperature (ECT) Sensor Circuit Range/ Performance Problem: Condition
WARNING: This page is about a different car, the 1996 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when ECT sensor temperature is 86°F (30°C) or less for at least 20 minutes of engine operation. Possible causes are:
- Engine Coolant Temperature (ECT) sensor.
- Cooling system.