DTC P0116: Engine Coolant Temperature Sensor Circuit Range/Performance: Notes
WARNING: This page is about a different car, the 2003 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
NOTE:
If DTCs P0115 and P0116 are output simultaneously, an open may exist in wiring between Engine Coolant Temperature (ECT) sensor and Engine Control Module (ECM). Perform DTC P0115: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT test before performing DTC P0116 test.