DTC P0116-00: ECT Sensor Circuit Range/Performance Problem: Notes

DTC P0116:00	ECT sensor circuit range/performance problem
DETECTION CONDITION	The PCM monitors the maximum value and minimum value of engine coolant temperature when the engine is started and 5 min have been passed after leaving the vehicle 6 h or more . If difference between maximum and minimum values of engine coolant temperature is below 6 °C {43 °F} the PCM determines that there is an ECT sensor circuit range/performance problem. Diagnostic support note This is a continuous monitor (engine cooling system). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	-
POSSIBLE CAUSE	ECT sensor connector or terminals malfunction PCM connector or terminals malfunction ECT sensor malfunction Thermostat malfunction PCM malfunction
SYSTEM WIRING DIAGRAM	-