DTC P0116 - Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem: Condition
WARNING: This page is about a different car, the 1997 Lexus SC 300. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when sensor temperature is 86°F (30°C) or less for at least 20 minutes of engine operation. Possible causes are:
- ECT sensor.
- Faulty cooling system.