P0128 error code. Check the wiring harness and connectors for damage.

P0128 error code. (The coolant is not low) Most Nov 21, 2018 · 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 Dodge Journey as any other vehicle). Feb 14, 2016 · Well saw the check engine light up for the first time today. P0128 indicates an issue with the engine’s Feb 2, 2025 · P0128 code indicates that the engine coolant temperature is lower than expected. This code can indicate a low coolant temperature, which can lead to engine problems if left untreated. 4. This article will delve into the How to Fix P0128 Code The steps required to resolve a P0128 engine code involve repairing or replacing faulty sensors, components, and even the coolant itself. The P0128 code indicates that the engine is not reaching the proper temperature, most often due to a faulty thermostat. Low Coolant Level: Insufficient coolant can result in inadequate heat transfer Sep 6, 2023 · Common Causes of the P0128 Code in Honda Civics The Honda Civic is a popular vehicle, and the P0128 code is one of the most common diagnostic trouble codes (DTCs) associated with it. " We tell you what it means and what to do. The P0128 code indicates that your PCM monitors that the coolant temperature is lower than the thermostat regulating temperature. Take some time to learn more about a P0128 code – you’ll thank Aug 29, 2022 · The P0128 code indicates a problem with the cooling system (coolant system). May 8, 2025 · The P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature,” meaning the powertrain control module (PCM) has detected that the engine is running cooler than it should (under 200 degrees). May 8, 2024 · How to Fix Engine Code P0128 1. When you get P0128 Find out the exact meaning of the fault code p0128, its possible causes, and tips for eliminating it – all for free. The thermostat is responsible for regulating the engine's operating temperature by controlling the flow of coolant. Jul 9, 2024 · The P0128 fault/error code can be read by the on-board computer system using an OBD-II scanner or code reader. The scanner or reader reads the error code by connecting to the vehicle's OBD-II port. May 6, 2025 · Learn what vehicle error code P0128 means, its common causes, symptoms, and how to fix it to keep your engine running efficiently and avoid costly repairs. Jan 2, 2018 · P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) This is the full code. If it is stuck open, the coolant will circulate freely, preventing the engine from reaching its optimal temperature. The P0128 code in a Jeep indicates that the engine is not reaching the correct operating temperature within a specified amount of time after starting. Your intake air temperature sensor, coolant temperature sensor and coolant fan could also signal this trouble code, so these should be inspected after you look over your thermostat and coolant level. How to repair P0128 GMC — Engine Coolant Temperature Below Thermostat Regulating Temperature May 29, 2024 · If you’re wondering how long you can drive with a P0128 code, the answer is that you can drive indefinitely. P0128 indicates an issue with the engine’s coolant Aug 18, 2024 · The P0128 diagnostic trouble code for KIA vehicles indicates a malfunction in the coolant thermostat. Specifically, the P0128 code means that the engine is not reaching the proper operating temperature within a specified timeframe. May 26, 2022 · Error code P0128 (OBD2) - decoding, causes, symptoms and solutions. Symptoms include the Check Engine light being on, and an engine that is slow to warm up. These parts Jun 15, 2023 · The P0128 code indicates a problem with the cooling system (coolant system). Now, please remember, I'm challenged when it comes to vehicles. Check the wiring harness and connectors for damage. To put it bluntly, I had to send a picture to my brother asking me what the fill location was for my radiator. P0128 is telling your fix sensor that your car's coolant thermostat is operating below the regulating temperature. This is a common code that pops up on OBD-II scanners, indicating that there’s a problem with the coolant thermostat. Let’s go through the steps together: 1️⃣ Don’t rush to replace the sensor or thermostat. P0128 indicates an issue with the engine’s Sep 7, 2024 · - The code P0128 in a Chevrolet is often caused by a malfunctioning thermostat, low coolant levels, a faulty coolant temperature sensor, or a problem with the cooling system. Learn, solve, and enhance your driving experience. Check the engine coolant temperature sensor. This guide explains the P0128 code’s meaning, symptoms, causes, and step-by-step diagnostics to fix it like a pro—potentially saving you $300-$600 from overpriced Apr 15, 2024 · The P0128 code indicates abnormal coolant temperature operation. . Dec 5, 2021 · So why in the world does a faulty thermostat cause a "Steering Assist is Reduced" message? In my latest video I explain this mystery and everything else you need to know about the thermostat issues plaguing the XT5. Install a new Thermostat Related Codes and Their Repairing Methods: P0128: • How to Fix P0128 Engine Code in 3 Minutes P0115: • How to Fix P0115 Engine Code in 3 Minutes One common problem that BMW drivers may encounter is the P0128 code, which is related to the engine coolant temperature sensor. P0128 indicates an issue with the engine’s Is your check engine light showing the P0128 error code? Don’t worry — in this quick 3-minute guide, we’ll show you 2 simple methods to fix this cooling syst Mar 17, 2018 · MY JGC has a P0128 error code. Apr 30, 2024 · Discover everything you need to know about the P0128 Honda error code. The most common causes are a failed thermostat, low coolant level, or a faulty ECT sensor. After searching the forum I found generally it is the thermostat stuck open or the temp sensor. Inspecting the cooling system, replacing defective components, and ensuring proper coolant circulation can effectively resolve the issue. This discrepancy can trigger your vehicle’s diagnostic system to alert you about potential issues. Specifically, it means that the engine coolant Jun 28, 2023 · Find out How long can you drive with a p0128 code. The temp gauge on the car reads between 80 Celsius and the first bar above the 80, which is normal. P0128 indicates an issue with the engine’s The P0128 code for BMW indicates that the engine coolant temperature is below the thermostat regulating temperature. Clear the code and test drive the vehicle. If the engine is not starting, a faulty coolant temperature sensor could be to blame. In this video we diagnose code P0128 on my 2015 DODGE DURANGO and repair it. Jun 9, 2023 · If you’re experiencing any of these symptoms, it’s time to check the thermostat. P0128 indicates an issue with the Hey guys, in this video I'll show you How to fix P0128 code on Chrysler Town and Country. Jan 27, 2023 · The P0128 code indicates that the engine coolant temperature is below the thermostat regulating temperature. Apr 25, 2024 · Explore the symptoms, causes, and repair process for error code P0128. P0128 indicates an issue with the engine’s coolant Jan 11, 2022 · The Jeep Wrangler error code P0128 indicates a problem with the coolant temperature not reaching the required level within a specified time. Apr 14, 2025 · BMW code P0128 indicates a problem with the engine coolant temperature remaining below the thermostat regulating temperature. Nov 6, 2018 · 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 GMC Acadia as any other vehicle). The P0128 code in a Jaguar indicates a coolant thermostat malfunction. How to diagnose, reset the code and fix the fuel supply problem. P0128 indicates an issue with the engine’s May 8, 2023 · P0128 Code – Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) OBD-II code P0128 is a common diagnostic trouble code that appears when your vehicle’s engine control module (ECM) detects that the engine is not reaching its optimal operating temperature within a specified time period. These vehicles are high-tech with smart systems, so sometimes small electrical glitches or loose connections can cause such warnings. P0128 indicates an issue with the engine’s Dec 16, 2022 · The P0128 permanent code will remain in the system until it has completed so many cycles that it has not detected the low coolant temperature. In simpler terms, it means your vehicle’s thermostat isn’t warming up properly. A P0128 code means your car’s coolant thermostat isn’t allowing the engine to reach proper operating temperature, triggering the check engine light and potentially causing poor fuel economy and heater problems if ignored. I have never seen the temp get to 100 Celsius. P0128 Fault Code: What It Means and How to Fix It If you’re a DIY car enthusiast, you might have encountered the dreaded P0128 code. I went to the dealer and they want $1300 to Dec 20, 2024 · The P0128 code is a generic OBD-II trouble code that indicates an issue with your vehicle’s coolant temperature regulation. Apr 26, 2024 · The error code P0128 on a Dodge Grand Caravan indicates a problem with the engine coolant temperature. Sep 12, 2024 · The P0128 error code on your car is officially known as "Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). May 23, 2025 · Causes of the P0128 Code The P0128 code is usually associated with the engine’s cooling system. Common causes include: Faulty Thermostat: The thermostat regulates the flow of coolant in the engine. A defective sensor, malfunctioning thermostat, improper fan operation, or poor coolant circulation could all set off the P0128 code to be set. Feb 22, 2024 · What Does The P0128 Error Code Mean? The illuminated check engine light is designed to alert the driver of a malfunction or fault with the vehicle's powertrain. In this article, we’ll explore the meaning, causes, symptoms, and fixes for the BMW P0128 code. Specifically, it signals that the Engine Control Module (ECM) has detected that the engine coolant temperature is lower than expected after the engine has been running for a certain period. 2. 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. Follow our guide for diagnostic steps, repair methods, and troubleshooting tips. Jun 9, 2020 · P0128 code, power steering assist message, temp gauge not working, no AC 4 reading Jump to Latest 206K views 286 replies 87 participants last post by doitright432 May 29, 2025 Nov 6, 2018 · 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 Jeep Grand Cherokee as any other vehicle). Nov 6, 2018 · 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 Chevy Malibu as any other vehicle). Aug 19, 2024 · P0128 Code - Coolant Thermostat Malfunction Table of contents Created and updated by William Orellana on Aug 19, 2024 Description Common Causes Symptoms How To Fix Cost to Fix Tech Notes Comments Add Comment P0128 Code: Most Common Causes And Fixes Understanding the P0128 Trouble Code: Causes and Fixes If you’ve ever seen a P0128 code pop up on your OBD-II scanner, you’re dealing with a cooling system issue. It came Nov 6, 2018 · 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 Ford Focus as any other vehicle). P0128 indicates an issue with the engine’s Feb 6, 2023 · Don't worry we are here to explain how long can you drive with a P0128 code. Nov 15, 2024 · Learn how to diagnose and repair the P0128 code, which indicates a low engine coolant temperature. Clean or replace the sensor if necessary. The PCM monitors thermostat data and if it doesn’t receive sensor signals, takes too long to reach temperature, or never does, P0128 sets. Feb 8, 2014 · My wife's CLK had the check engine light come on this week, had the codes pulled and got P0128 for low engine temp. P0128 indicates an issue with the engine’s coolant In today’s video, Zach takes a deep dive into engine fault code P0128, a diagnostic puzzle that can leave car owners scratching their heads. Oct 28, 2022 · Find out how to diagnose a P0128 code or a radiator fan that won't turn off yourself with these tips from the expert mechanics at 1A Auto Jul 31, 2021 · 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. The engine control module notices that the engine temperature is below where it should be operating within a specified amount of time. Nov 21, 2018 · 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 Dodge Ram as any other vehicle). com/stores/fr Nov 21, 2024 · Friends, if you see this error, first of all, don’t panic. This can cause the temperature gauge to not reach optimal levels, potentially leading to damage to the car’s engine and performance over time. The P0128 Mercedes code is an error code which is used to define a Coolant Thermostat. Here’s how you can fix a P0128 engine code: Replace the faulty thermostat with a new one, ensuring that it’s properly aligned to work effectively. It's very simple fix when you vehicle gets a error code P0128. Low coolant levels, a stuck engine coolant thermostat, and issues with the coolant temperature sensor or its wiring can cause code P0128. for cool tee shirts and merch check out the storehttps://teespring. Repairing this code in time prevents further engine wear in the long run. When this code appears, it means that the engine coolant temperature is below the expected range for the engine’s operating conditions for too long. Sep 27, 2024 · The P0128 engine code indicates a problem with the coolant thermostat. The thermostat is a crucial component of the engine's cooling system, responsible for regulating the flow of coolant to maintain optimal engine temperature. 🚗💨 Nov 6, 2018 · 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 Chevy Colorado as any other vehicle). Nov 21, 2018 · 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 Dodge Challenger as any other vehicle). Normal coolant temp should reach 160°F within 15 minutes of starting. This code can be triggered by a variety of issues, ranging from a faulty Nov 6, 2018 · 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 Ford F150 as any other vehicle). Mar 9, 2016 · I have a 2002 M3 and I recently got the error code P0128. List of possible OBD codes The OBD code associated with a defective engine thermostat on a Range Rover is P0128. The code is triggered when the engine temperature does not reach the expected level within a certain time frame. You’ll need to bring your Jul 17, 2025 · In case your car is displaying the P0128 fault code (Coolant Temperature Beneath Thermostat Regulating Temperature), your engine is also affected by a scarcity of power or gasoline effectivity. Symptoms of the P0128 code Nov 14, 2022 · Read on to learn more about the P0128 code and what you can do to fix it! This article tells you about the thermostat failure. Coolant Temperature The coolant temp sensor is responsible for telling the Engine Control Module (ECM) the engine’s coolant temperature. Jul 1, 2023 · The P0128 Jeep code is an engine-related fault code that signifies an inadequate coolant mixture/level or a malfunctioning thermostat. How to quickly diagnose, repair, and info on symptoms and causes of a P0128 code which generally indicates a failed thermostat. P0128 indicates an issue with the engine’s Encounter chevy code p0128 on your vehicle? Learn what it signifies and get expert tips on diagnosing and resolving the coolant temperature issue. Also discover simple tips that can extend thermostat life and prevent error codes. Lots on info to help you to get the dealership to fix it right the first time Dec 13, 2022 · 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 Cadillac XT5 as any other vehicle). This can affect fuel mileage and prevent engine oil from burning off condensation. The thermostat is a crucial component of the vehicle's cooling system, responsible for regulating the flow of coolant through the engine to maintain optimal operating temperature. P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) Was driving home from the Poconos on the turnpike averaging between 70-90 MPH and at times outside temp was well below 10° Fahrenheit. Learn about its meaning, symptoms, causes, and how to fix it in different Honda models like Civic and Accord. Nov 21, 2018 · 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 Chrysler Town and Country as any other vehicle). This means that the engine is not reaching the optimal operating temperature, which can lead to decreased fuel efficiency, increased emissions, and potential damage to engine components. Aug 30, 2024 · The P0128 code for Ford vehicles indicates an issue with the coolant thermostat. Failure to regulate the engine or an overheated thermostat are two other possible causes of the problem if the engine does not overheat. Aug 30, 2024 · Code P0128 Dodge Description The P0128 diagnostic trouble code (DTC) for Dodge vehicles refers to "Thermostat Rationality. Click to get started now! P0128 code indicates that the engine's coolant temperature is lower than what the thermostat should be regulating. Some users Nov 5, 2018 · 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 Jeep Wrangler as any other vehicle). Mar 29, 2025 · Unveil the secrets of the P0128 Code with our comprehensive guide. Having a P0128 trouble code is a sign that your coolant thermostat is registering an issue. P0128 indicates an issue with the engine Jun 3, 2023 · The P0128 code indicates a problem with the cooling system (coolant system). Check the coolant temperature sensor. Dec 28, 2018 · 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 Buick Lucerne as any other vehicle). This may be caused by a malfunctioning thermostat, which regulates the flow of coolant through the engine to maintain the optimal temperature for performance and efficiency. 3. " This code is typically triggered when the engine's coolant temperature does not rise to the expected level within a specified time after starting the vehicle. Dec 18, 2019 · A P0128 code is a common issue for Jeep owners and indicates a problem with the engine’s coolant temperature. Jun 12, 2025 · Is your Dodge showing a P0128 code? It could be a stuck thermostat or faulty sensor. The most common fix is to replace the thermostat. Apr 23, 2025 · The P0128 error code in VW vehicles is typically caused by a faulty thermostat valve or engine coolant temperature sensor. Inspect the wiring harness for damage. But what exactly is the P0128 code? What does it mean? And how can you fix it? Oct 27, 2022 · What does OBD trouble code P0128 mean? Read along to learn all about the causes, symptoms, and diagnosing procedure of the P0128 code. He covers valuab May 19, 2024 · How to fix P0128 engine code 1. Read on to learn what causes a P0128 code, symptoms you’ll experience, and how to fix it. Aug 30, 2024 · The P0128 code for Chrysler vehicles indicates an issue with the thermostat rationality. However while driving it today Nov 10, 2018 · 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 Hyundai Sonata as any other vehicle). P0128 indicates an issue with the engine’s coolant Jan 12, 2024 · The P0128 engine code indicates that the engine coolant temperature is below the thermostat regulating temperature. The P0128 code for Cadillac indicates that the engine coolant temperature is below the thermostat regulating temperature. It's Coolant Temp Below Thermostat Regulating Temp. This code indicates that the engine coolant temperature (ECT) has not reached its required operating temperature within a certain amount of time after starting the engine. However, it’s important to note that the code indicates an issue with your engine’s coolant system, specifically that the coolant temperature is below the thermostat regulating temperature. Jul 30, 2024 · P0128: Coolant Temperature Below Thermostat Regulating Temperature is usually caused by a defective thermostat but can be due to other issues like low coolant. Learn the symptoms, risks, and affordable fixes before it causes bigger issues. Oct 28, 2023 · Does your Jeep Wrangler have a P0128 thermostat code? Learn what causes it, diagnostic tips, and how to fix it by replacing the thermostat, coolant sensor, radiator hoses and more. Jul 10, 2025 · Learn what the P0128 code means, common symptoms, causes like faulty thermostats or sensors, and how to diagnose and fix it with an OBD2 scanner at home. P0128 indicates an issue with the engine’s Nov 6, 2018 · 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 GMC Sierra as any other vehicle). Learn how to diagnose and fix the issue to prevent potential damage to your cooling system and improve engine performance. Nov 10, 2018 · 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 Kia Sportage as any other vehicle). The coolant thermostat is a crucial component of the engine's cooling system that regulates the flow of coolant to maintain the engine's operating temperature within the optimal range. Dec 6, 2024 · Discover the causes, symptoms, and solutions for the P0128 code. The powertrain control module notices that the engine temperature is below where it should be operating. Symptoms of the P0128 code Error code P0128 indicates a faulty coolant thermostat, but it can also be a sign of other issues. Low engine coolant can alter the engine running temperature enough to signal trouble code P0128. While the CEL might disappear on its own and the Jeep might seem to be running fine, a faulty thermostat that's stuck open or opening too soon can cause the engine to run cooler than it should. Nov 21, 2018 · P0128 Causes: Dodge Caravan Fixing P0128 in the Dodge Caravan is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. This means that the engine is not reaching the optimal operating temperature, which can lead to decreased fuel efficiency, increased emissions, and potential damage to the engine over time. Replace the coolant temperature sensor if necessary. Jun 17, 2023 · The P0128 code indicates a problem with the cooling system (coolant system). mi xe7ydfeo muw5fjny riw rl xzjl rdj pxur5m yylw kqgb1wa1