P0125Nissan TitanYears: 1996 - 2026
Insufficient Coolant Temperature for Closed Loop Fuel Control
Reviewed by ASE Certified Technician
What does this mean?
Code P0125 means the engine coolant is not reaching the temperature required for the PCM to enter closed-loop fuel control within the expected time.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Nissan Titan models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty or stuck thermostat
Faulty Engine Coolant Temperature (ECT) sensor
Coolant leak or low coolant level
Symptoms to Watch For
- Check Engine Light is illuminated
- Decreased fuel economy
- Engine stalls when cold
- Rough or unstable idle
- Failed emissions test