![]() ![]() Low engine coolant can cause all sorts of problems in the cooling system. Drive the vehicle to see if the check engine light comes back on. If the coolant is low, fill it back up and reset the check engine light. Shining a flashlight onto the coolant reservoir helps to accurately inspect the coolant. The first natural procedure when a cooling system code is set off is to check the coolant level and quality. Read More > What Do You Do About The Service Engine Soon Light? Stuck open thermostat/faulty thermostatĪnd when your vehicle is running colder than it normally should, its symptoms are:.Here are some possible causes of the p0128 code When the engine gets hot, the thermostat opens letting coolant flow through the radiator.īut, the engine doesn't always need to be cooled sometimes it gets too cold, like when the p0128 OBD-II code shows up stored in the engine control module: When you start the engine, the vehicle is constantly trying to heat to its ideal engine operating temperature, so that it can burn fuel efficiently. What Caused The p0128 code (Possible Symptoms)? Not to mention the fact that the check engine light should be immediately taken care of always when it is illuminated. ![]() This may not be much of a problem in summer conditions, however, in the wintertime, the engine will run rough if this error code is stored in the vehicle's ECM. That's right, the engine can't get too hot, and it also shouldn't be excessively cooled. This code means that the vehicle failed to reach running temperature and that the engine temperature is excessively low. ![]()
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