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Fixing P0128 in the GMC Sierra is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant ...Fixing P0128 in the Chevy Tahoe is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant ...Today I will show you how to fix the Steering Assist is Reduced warning light and the P0128 code on your Chevy GMC vehicle Coolant Temp Sensor GM# 12650595M...Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is “over-cooled” and never reaches the proper operating ...Thermostat stuck open. If the engine coolant level is low. Malfunction in the Engine Coolant Temperature (ECT) sensor. Insufficient warm-up time. What are the symptoms of the …Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is “over-cooled” and never reaches the proper operating ...2. The next cause is a problem with the engine coolant temperature sensor or the wiring associated with the sensor. There are two main symptoms for the P0128 code: 1. Heater is not hot enough due to the coolant temperature in the engine being low 2. Car takes too long to warm up, or the temperature gauge does not go up as high as it used to.Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is “over-cooled” and never reaches the proper operating ...2. The next cause is a problem with the engine coolant temperature sensor or the wiring associated with the sensor. There are two main symptoms for the P0128 code: 1. Heater is not hot enough due to the coolant temperature in the engine being low 2. Car takes too long to warm up, or the temperature gauge does not go up as high as it used to.Fixing P0128 in the GMC Sierra is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant ...A radiator fan malfunction. If the fan stays on all the time, the coolant will cool down quicker and take longer to warm up. A low coolant level. PCM failure. The control module can malfunction, although this doesn't occur frequently. Symptoms of code P0128. The engine takes an unusually long time to warm up, especially in cold weather.Normally, when the thermostat goes bad, it will remain open to keep the engine cool (sort of "stuck open"). It's a "safety feature". You would want to keep the engine cool, instead of hot. Of course, it will throw a code saying the engine is running under the operating temperature (cold). The engine runs best at around 205-210 degrees.Normally, when the thermostat goes bad, it will remain open to keep the engine cool (sort of "stuck open"). It's a "safety feature". You would want to keep the engine cool, instead of hot. Of course, it will throw a code saying the engine is running under the operating temperature (cold). The engine runs best at around 205-210 degrees.1. To turn off the codes with your scanner, follow these steps: 2. Connect the scanner to your car's OBD2 connector. It's found near the floor under the steering wheel to the left side. 3. Switch the ignition to the ON position. 4. Once a connection is established, press the READ button on the scanner.Here are the most common causes of P0128: Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is "over-cooled" and never reaches the proper operating ...Jan 21, 2024 · The Honda code P0128 indicates a problem with the engine coolant temperature sensor. It means that the sensor is reporting insufficient temperature increase during the engine warm-up period. This could be due to a malfunctioning sensor, a thermostat stuck in the open position, or a problem with the engine control module.

Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is "over-cooled" and never reaches the proper operating temperature. How to Replace a Thermostat (video).The engine coolant temperature (ECT) sensor monitors the fluctuations in the temperature of the engine coolant. This data is sent to the ECM, which uses this data to regulate the air to fuel ratio, cooling fans, and ignition spark timing needed by the engine. Code P0118 is the result of the ECT sensor indicating a high voltage input from the ...Getting Code P0128 and even after you clear the code it pops up later? Fix it before it gets worse! Its a cheap and easy fix for the DIY guru. The entire cos...Here are the most common causes of P0128: Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is "over-cooled" and never reaches the proper operating ...I don't know if this is normal or was just for this reader, but it was previously showing a second p0128 with an extra symbol indicating that it was like a repeating code, or that it was constantly popping up (at least that's how I interpreted the manual). That's the one that is gone now. This reader is years old and was like $40, but is a ...

The code P0128 - Coolant Temperature Below Thermostat Regulating Temperature means that the engine does not reach expected temperature after running for sufficient time, or in other words, it takes too long to warm up. Often this code causes the Check Engine light to come on and off in cold temperatures. Symptoms: With the code …P0128 Definition: Coolant Temp - Below Thermostat Regulating Temp. The P0128 OBD-II trouble code is a generic powertrain diagnostic code (it has the same meaning for the Nissan Pathfinder as any other vehicle). Coolant Temperature. The coolant temp sensor is responsible for telling the Engine Control Module (ECM) the engine's coolant ...EZ Auto channel https://www.youtube.com/channel/UCKad7TDiezp88p9RYoXcuVA?sub_confirmation=1 The 2017 Cadillac XT5 in this video had P0128 code for the check ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Today I will show you how to fix the Steering Ass. Possible cause: P0128: This means that the engine's PCM detected that the engine has not reache.