DTC P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control: Description
A thermistor is built into the Engine Coolant Temperature (ECT) sensor, of which the resistance value varies according to the ECT.
The structure of the sensor and its connection to the ECM (Included in HV Control ECU) are the same as those of the Intake Air Temperature (IAT) sensor.
DIAGNOSTIC TROUBLE CODE CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0125 | Engine coolant temperature (ECT) does not reach closed loop enable temperature for 20 minutes (this period varies with ECT when engine start) |
|