Code P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem: Condition
WARNING: This page is about a different car, the 1995 Lexus LS 400. However, it is still accessible from the selected car via links, so may be relevant.
Code 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 malfunction.
- Faulty cooling system.