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DTC    P0116    Engine Coolant Temperature Circuit Range / Performance Problem

for Preparation Click here


DESCRIPTION

Refer to DTC P0115 (Click here).

DTC No.
DTC Detection Condition
Trouble Area
P0116
When either of the following conditions is met (2 trip detection logic):
  1. During engine warm up after cold engine starts, change in engine coolant temperature sensor output is below threshold
  2. In duration between warmed engine stopped and next cold engine starts, change in engine coolant temperature sensor output below threshold
  1. Water inlet with thermostat sub-assembly
  2. Engine coolant temperature sensor

INSPECTION PROCEDURE

HINT:
  1. If any of DTCs P0115, P0117, P0118 or P0125 is set simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

Result:
Result
Proceed to
DTC P0116 is output
A
DTC P0116 and other DTCs are output
B

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



B
GO TO DTC CHART (Click here)
A


2.INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

  1. Remove the water inlet with thermostat sub-assembly (Click here).

  1. Measure the valve opening temperature of the water inlet with thermostat sub-assembly.

    Standard value:
    80 to 84°C (176 to 183°F)

    HINT:
    In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard.

  1. Reinstall the water inlet with thermostat sub-assembly (Click here).



NG
REPLACE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY (Click here)
OK

REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)