2016-2023 Nissan Maxima Thermostat Replacement | Code P0128

In this video, I replace the engine thermostat on a 2016–2023 Nissan Maxima to fix code P0128 (coolant temperature below thermostat regulating temperature). The faulty thermostat was causing the engine to run cooler than normal. After replacement, proper operating temperature was restored and the check engine light was cleared. ⚠️ Always allow the engine to cool completely and follow proper safety procedures when working on the cooling system. #NissanMaxima #ThermostatReplacement #P0128 #CheckEngineLight #CoolingSystem #AutoRepair #CarDiagnostics #DIYAuto #NissanRepair 📋 List of Nissan genuine Part numbers Thermostat Unit - 21200-9HP0A Gasket - 13050-ZA000 Nissan Long Life Coolant Blue - 999MP-L25500P Electric Power Steering Fluid (E- Psf) - 999MP-EPSF00P