2003 Buick Regal, P0128
This 2003 Buick Regal came in with a service engine soon light on and a code P0128 stored. The code means that the engine coolant temperature is below the thermostat regulating temperature. In other words the thermostat is sticking open or opening to soon to satisfy the computer. Thankfully this car has the 3.8 liter … Continue reading “2003 Buick Regal, P0128”