16509/P0125
From Ross-Tech Wiki
16509/P0125 - Insufficient Coolant Temperature for Closed Loop Fuel Control
Possible Symptoms
- Unknown
Possible Causes
- Insufficient warm up time of the engine
- Engine coolant level to low
- Thermostat leaking or stuck
- Malfunctioning Engine Coolant Temperature (ECT) sensor
Possible Solutions
- Check coolant level
- Check specifications of ECT sensor
- Check thermostat
Special Notes
- Indicates that the Engine Coolant Temperature (ECT) sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting engine.