The P0118 code means that the engine control module (ECM) has detected a voltage signal that's too high from the engine coolant temperature (ECT) sensor (below). In practical terms, the ECM believes ...

As engines get very hot, coolant helps distribute heat to help prevent overheating and engine damage. It also adds antifreeze protection and acts as a lubricant for some of the engine’s components. If ...

Engineers design modern engines to run in a narrow temperature window where power, efficiency, and emissions all line up. The thermostat sits at the center of that control, opening and closing a ...

A faulty Engine Coolant Temperature (ECT) sensor may lead the turbocharged 2.0L I4 LSY gasoline engine in certain GM vehicles to run hot or even overheat. To be clear, these vehicles are not under an ...