How much does it cost to fix P0115?

Typical repair cost is $80–$300.

P0115 — Engine Coolant Temperature Sensor Circuit

Medium Severity · Cooling

OBD-II code P0115 means your vehicle's ECU detected: Engine Coolant Temperature Sensor Circuit. 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

$80–$300

Parts + labor, national average

Severity

Medium

Schedule repair soon

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Common Causes of P0115

Failed ECT sensor
Wiring issue

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How to Fix Code P0115

Inspect wiring

Replace coolant temp sensor ($30–$150)

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FAQ — Code P0115

What does OBD-II code P0115 mean?

P0115 means your vehicle's onboard computer detected: Engine Coolant Temperature Sensor Circuit. This is a medium-severity code in the Cooling category.

How much does it cost to fix code P0115?

Typical repair cost for P0115 is $80–$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 P0115?

Code P0115 is generally safe for short trips, but have it diagnosed soon to prevent the problem from worsening.

What are the most common causes of P0115?

The most common causes are: Failed ECT sensor, Wiring issue. Always start with the cheapest diagnosis step before replacing parts.

Will code P0115 clear itself?

Code P0115 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 P0115 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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Related Cooling Codes

P0116Engine Coolant Temperature Sensor Range/Performance P0117ECT Sensor Low Voltage P0118ECT Sensor High Voltage P0125Insufficient Coolant Temperature for Closed...P0128Coolant Thermostat — Temperature Below...P0480Cooling Fan 1 Control Circuit...

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.