What does code P0128 mean?

Code P0128 means the engine coolant temperature is below the thermostat regulating temperature, which usually means the engine is not warming up fully or fast enough. The most common cause is a thermostat stuck in the open position, which lets coolant flow constantly and keeps the engine too cool. Other causes include a faulty coolant temperature sensor or low coolant level. While the car may run fine, an engine that does not reach proper operating temperature suffers worse fuel economy, increased emissions, and added wear. A computerized diagnostic confirms whether the thermostat or sensor is at fault. At Motoro Cars in Miami, our ASE-certified, AAA-approved technicians test coolant temperature data to pinpoint the cause before replacing parts. Call Wynwood at (786) 634-2002 or Doral at (786) 633-3220 to get your P0128 code diagnosed and restore proper engine temperature.