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

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0115 .

DTC DESCRIPTION CHART

DTC No.	DTC Detection Conditions	Trouble Areas
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, ECT sensor value does not change when engine stopped and then next cold engine start performed.	Thermostat ECT sensor