ECD SYSTEM, Diagnostic DTC:P0116

DTC Code DTC Name
P0116 Engine Coolant Temperature Circuit Range / Performance Problem

DESCRIPTION

A thermistor is built into the engine coolant temperature sensor and it changes its resistance value according to the engine coolant temperature.

The structure of the sensor and connection to the ECM is the same as the intake air temperature sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0116 Engine Coolant Temperature Circuit Range / Performance Problem

  • When engine is started cold and warmed up, the engine coolant temperature sensor value does not change (2 trip detection logic).

  • After the warmed up engine is stopped and the next cold engine start is performed, the engine coolant temperature sensor value does not change (2 trip detection logic)

  • Thermostat

  • Engine coolant temperature sensor

 Comes on DTC stored
Related Data List
DTC No. Data List
P0116 Coolant Temp

Tech Tips

If DTC P0116 is stored, the following symptoms may appear:


  • Misfire

  • Combustion noise

  • Black smoke

  • White smoke

  • Lack of power

MONITOR DESCRIPTION



CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P0116 With the engine coolant temperature below 60°C (140°F), start the engine and idle it for 5 minutes. Then drive the vehicle at a speed of 40 km/h (25 mph) or more for a total of 5 minutes or more and check that the engine coolant temperature changes by 1°C (1.8°F) or more.

CAUTION / NOTICE / HINT

Note

After replacing the ECM, the new ECM needs registration (Click here ) and initialization Click here.

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0116)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine / Trouble Codes.


      Powertrain > Engine > Trouble Codes

    4. Read the DTCs.

      Result
      Proceed to
      DTC P0116 is output
      DTC P0116 and other DTCs are output

      Tech Tips

      If any DTCs other than P0116 are output, troubleshoot those DTCs first.


    DTC P0116 and other DTCs are output

    GO TO DTC CHART Click here

    DTC P0116 is output

  2. INSPECT THERMOSTAT


    1. Inspect the thermostat.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE THERMOSTAT Click here

    OK

  3. REPLACE ENGINE COOLANT TEMPERATURE SENSOR


    1. Replace the engine coolant temperature sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 5 Click here

  4. REPLACE THERMOSTAT


    1. Replace the thermostat.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temp

    4. Check that the engine coolant temperature is 60°C (140°F) or less.

    5. Start the engine.

    6. Idle the engine for 5 minutes, and then drive the vehicle at a speed of 40 km/h (25 mph) or more for a total of 5 minutes or more.

    7. Check that the engine coolant temperature changes by 1°C (1.8°F) or higher.

      Result
      Proceed to
      NEXT

    NEXT

    END