How much does it cost to fix P0125?

Typical repair cost is $50–$300.

P0125 — Insufficient Coolant Temperature for Closed Loop Fuel Control

Medium Severity · Cooling

OBD-II code P0125 means your vehicle's ECU detected: Insufficient Coolant Temperature for Closed Loop Fuel Control. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

Drivable short-term but schedule a diagnosis soon. Prolonged driving can worsen the issue.

Typical Repair Cost

$50–$300

Parts + labor, national average

Severity

Medium

Schedule repair soon

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Common Causes of P0125

Stuck-open thermostat
Low coolant
Failed ECT sensor

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How to Fix Code P0125

Replace thermostat

Check coolant level

Test ECT sensor

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FAQ — Code P0125

What does OBD-II code P0125 mean?

P0125 means your vehicle's onboard computer detected: Insufficient Coolant Temperature for Closed Loop Fuel Control. This is a medium-severity code in the Cooling category.

How much does it cost to fix code P0125?

Typical repair cost for P0125 is $50–$300 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.

Can I drive my car with code P0125?

Code P0125 is generally safe for short trips, but have it diagnosed soon to prevent the problem from worsening.

What are the most common causes of P0125?

The most common causes are: Stuck-open thermostat, Low coolant, Failed ECT sensor. Always start with the cheapest diagnosis step before replacing parts.

Will code P0125 clear itself?

Code P0125 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P0125 showing on your car?

Enter your VIN for a free vehicle-specific report — recalls, specs, and market value. No signup required.

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OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.