DTC P0116 Engine Coolant Temperature Circuit Range / Performance Problem: Description

WARNING: This page is about a different car, the 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0115 .

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
P0116	When either of following conditions met: (2 trip detection logic) When cold engine started and engine warmed up, Engine Coolant Temperature (ECT) sensor value does not change. After warmed up engine started, if ECT sensor value does not change when engine stopped and then next cold engine start performed, it determined that malfunction has occurred.	Thermostat ECT sensor