What does Code p0 128 mean?
What the P0128 code means. The P0128 code means that the engine coolant is not getting warm enough, fast enough. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time.
Why is the thermostat on my GMC Sierra running?
When your engine is running and generating heat, your thermostat is hard at work. It opens and closes according to the temperature of your coolant in your engine, in order to regulate the temperature of your vehicle. When one goes bad, it is usually stuck shut or won’t open enough, which traps the hot coolant in the engine, causing it to overheat.
What does p0128 mean on a GM thermostat?
In some GM cars when the code P0128 is set, the temperature gauge stops working and the radiator fans run constantly. Replacing the thermostat often solves the problem unless there are some other issues.
What causes coolant level to go below the thermostat?
Common causes include: – Faulty or sticky thermostat. – Thermostat seal is not sealing properly allowing coolant to bypass a closed thermostat. – Faulty engine coolant temperature (ECT) sensor. – Engine computer (PCM) software needs to be updated. – Low coolant level. – Radiator fan does not turn off.
How long does it take to diagnose GMC p0128 code?
If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem. The cost to diagnose the P0128 GMC code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type.
In some GM cars when the code P0128 is set, the temperature gauge stops working and the radiator fans run constantly. Replacing the thermostat often solves the problem unless there are some other issues.
Common causes include: – Faulty or sticky thermostat. – Thermostat seal is not sealing properly allowing coolant to bypass a closed thermostat. – Faulty engine coolant temperature (ECT) sensor. – Engine computer (PCM) software needs to be updated. – Low coolant level. – Radiator fan does not turn off.
If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem. The cost to diagnose the P0128 GMC code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type.
What causes code p0128 on a Chevy Trailblazer?
Common problems causing the code P0128 in different cars: In many GM cars and trucks (Chevrolet Trailblazer, Silverado, HHR and other models) the code P0128 is often caused by a sticking thermostat. In some GM cars when the code P0128 is set, the temperature gauge stops working and the radiator fans run constantly.