DTC P0116: Engine Coolant Temperature Circuit Range / Performance [03/2019 - 11/2022]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

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

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes

Result

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

HINT:

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

Result:

GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [03/2019 - 04/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 09/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - 11/2022]

Result:

See step 2

INSPECT THERMOSTAT

Inspect the thermostat (thermostat opening temperature).

Refer to INSPECTION [01/2019 - 11/2022]

HINT:

Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

Refer to INITIALIZATION [01/2019 - 11/2022]

Result

Proceed to
OK
NG

Result:

REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to REMOVAL [03/2019 - 09/2022] , or refer to REMOVAL [09/2022 - 11/2022]

Result:

REPLACE THERMOSTAT. Refer to REMOVAL [01/2019 - 11/2022]