DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control: Procedure
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0125)
- 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.
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.
B → See step 4
A: Go to next step
- INSPECT THERMOSTAT
- Inspect the thermostat (thermostat opening temperature). Refer to INSPECTION .
NG → See step 5
OK: Go to next step
- CHECK COOLING SYSTEM
- Check for defects in the cooling system that might cause the system to be too cold, such as abnormal radiator fan operation or any modifications.
NG → REPAIR OR REPLACE COOLING SYSTEM (Refer To ENGINE COOLING SYSTEM (2ZR-FE) (SERVICE INFORMATION) )
OK → See step 6
- GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
- REPLACE THERMOSTAT. Refer to REMOVAL
- REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to REMOVAL