Shop Nissan Altima Coolant Temperature Sensors Replacement Cost. Find Best Nissan Altima Temp Senders & Nissan Altima Coolant Temperature Sensor Connector. Maintaining the coolant temperature sensor in your Nissan Altima is crucial for optimal performance, as it monitors the engine's temperature to prevent overheating. Regular checks for corrosion or wiring issues can extend its lifespan, while signs such as erratic temperature readings or check engine lights typically signal the need for replacement. When selecting a replacement sensor, opt for high-quality materials and compatibility with your Altima's model year to ensure durability and accurate temperature measurement. Installation is straightforward, but always ensure the engine is cool and the power is disconnected for safety. With a variety of sensors on the market, prioritize those with high customer ratings and warranty offerings to guarantee a value-driven purchase on your auto parts ecommerce platform.