The engine coolant temperature sensor circuit is malfunctioning.
Informational only. Consult a qualified mechanic.
Check coolant level and replace the ECT sensor.
The P0115 OBD-II diagnostic trouble code (DTC) indicates: engine coolant temperature circuit. This is a medium-severity powertrain code that your vehicle's onboard diagnostics system triggers when the engine coolant temperature sensor circuit is malfunctioning. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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