Possible Sources
WARNING: This page is about a different car, the 2013 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
- Low coolant level
- Thermostat
- Temperature gauge
- CHT Sensor
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0125 | Insufficient Coolant Temp for Closed Loop Fuel Control | Sets in the PCM when the CHT sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting the engine. |
| P0128 | Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) | Sets in the PCM when the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. |