Technical Description
Insufficient Coolant Temperature For Closed Loop Fuel Control
What does that mean?
This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model.
This indicates that the engine coolant temperature (ECT) sensor is showing that the engine has not reached the required temperature level to enter closed-loop operation within a specified amount of time after starting the engine.
Symptoms
Causes
A code P0125 may indicate that one or more of the following has occurred:
Possible Solutions
The simplest thing to do is to reset the code and see if it returns.
If the code returns, the problem is likely to be caused by the above factors (faulty thermostat, faulty ECT sensor, or a low coolant level).
Other ECT sensor and circuit related DTCs: P0115, P0116, P0117, P0118, P0119, P0128
