DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control [09/2014 - 11/2017]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTC P0125 is output	A
   DTC P0125 and other DTCs are output	B

   HINT: 

   If any DTCs other than P0125 are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 10/2015]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 08/2016]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 11/2017] 

Result: 

A 

See step  2

1. Inspect the water inlet with thermostat sub-assembly (thermostat opening temperature).

   Refer to INSPECTION [09/2014 - 11/2017]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY. Refer to  REMOVAL [09/2014 - 11/2017] 

Result: 

OK 

See step  3

1. Check for defects in the cooling system that might cause the system to be too cold, such as abnormal cooling fan operation or any modifications.

   HINT: 

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

   Refer to INITIALIZATION [09/2014 - 11/2017]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  REMOVAL [09/2014 - 11/2017] 

Result: 

NG 

REPAIR OR REPLACE COOLING SYSTEM