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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 753 (Engine Controls - Powertrain DTC Charts & Descriptions - CNG, Flex-Fuel & Gasoline) >> Diagnostic Trouble Code (DTC) Charts >> P0116: Engine Coolant Temperature Sensor 1 Circuit Range/Performance Failure

P0116: Engine Coolant Temperature Sensor 1 Circuit Range/Performance Failure

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P0116 - ENGINE COOLANT TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE FAILURE

Description:  Indicates the engine coolant temperature rationality test has failed. The PCM logic that sets this DTC indicates that engine coolant temperature sensor (ECT or CHT) drifted higher than the nominal sensor calibration curve and could prevent 1 or more OBD monitors from executing. The PCM runs this logic after an engine off\calibrated soak period (typically 6 hours). This soak period allows the intake air temperature (IAT) and engine coolant temperature (CHT or ECT) to stabilize and not differ by more than a calibrated value. DTC P0116 is set when all of the following conditions are met:
  • Engine coolant temperature at engine start exceeds IAT at engine start by more than a calibrated value, typically -1°C (30° F).
  • Engine coolant temperature exceeds a calibrated value, typically 107°C (225°F).
  • The Fuel System, Heated Oxygen and Misfire Monitors have not completed.
  • Calibrated timer to set DTC P0116 has expired.
Possible Causes: 
  • Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT) Sensor.
  • Coolant System Concern.
Diagnostic Aids:  Make sure the IAT and the engine coolant temperature are similar when the engine is cold. Also make sure the ECT or CHT sensor and the actual engine operating temperatures are the same.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Vehicles with a CHT sensor only - - GO to PINPOINT TEST DL: CYLINDER HEAD TEMPERATURE (CHT) SENSOR Step 24.
Vehicles with an ECT sensor only - - GO to PINPOINT TEST DX: ENGINE COOLANT TEMPERATURE (ECT) SENSOR Step 13.
Vehicles with both CHT and ECT sensor - - GO to PINPOINT TEST DX: ENGINE COOLANT TEMPERATURE (ECT) SENSOR Step 13.
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