Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Check for coolant leaks first, if there are no leaks check to see if thermostat is opening and closing properly if its not replace thermostat if problem is still there coolant temperature sensor may need to be replaced.
The cost to diagnose the P0116 2011 Nissan Sentra code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
Coolant temperature signal sent to the ngine Control Module (ECM) is not within specified range.
The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
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