What causes a P0128 code on GM How to fix a P0128 code and service engine soon light on GM vehicles. Since a P0128 code is defined as Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature, many people automatically replace the thermostat. When the light is on, the engine control unit actually stores a fault code related to the malfunction, which can be read and interpreted by an On-Board-Diagnostics or OBD2 scan tool. The road test of a typical drive cycle involves a highway and two road driving sessions. p0128 code/Service Engine Soon S-10 Car Forums . The whole drive cycle must take at least 10 minutes. 2. check the operation of the thermostat it may be stuck open.3.inspect for low coolant level or for an incorrect coolant mixture. In most cases you will get a P0128 – Coolant temperature below thermostat regulating temperature fault code. Therefore, it will be an intelligent decision to repair the error code as soon as it starts happening. How To Fix It Replaced the thermostat but still having the same issue. In this case, the Check Engine Light may come on. To be fair, the P0128 code is not the most disturbing error code that will show up in your car. However, if not repaired and the vehicle is used over a long period of time, there is a small chance that water contamination of … anewwayforward.org. HOWEVER, if the sensor is bad, you can get the code as well. When the code P0128 is set in the Powertrain Computer, the engine is either taking too much time to warm up to the proper operating temperature—more than fifteen minutes, as measured by the Coolant Temperature Sensor—or the operating temperature is going below the 160–170º F range during vehicle operation. possible causes 1. ect sensor is out of calibration. Note: It can be easily said that one can drive at least 500 miles even having problems with the P0128 error code. Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means. It’s just only that the engine has overheated and now it is getting out of hand. Find out if the coolant level is low. Unless you have uprev and you can have any code you want turned off like i did posted on jan 06, 2010 Jeep Code P0128 Definition. Fixing P0128 is usually a pretty easy thing to do, since 90% of the time it’s going to be the thermostat that is throwing the code. Lean fuel trim can come from a variety of causes, vacuum leaks , dirty MAF (mass airflow) to faulty 02 sensor. That is to say, if you take too long to repair this, the problem will rise up. The thermostat is a mechanical piece with two important goals, helping the engine reaching its operating temperature as fast as possible and then keep that operating temperature stable under any driving … However, the P0128 is one such code that refers to the coolant thermostat. If the wiring of the circuit is not working properly, it will not cool down. Discussion Starter • #1 • Jun 12, 2009. Another common reason why there could be a common problem is because of the circuits present inside the engine. Still, it is not safe to drive more than 1000 miles. This code is caused by a faulty engine thermostat or a faulty coolanttemperature sensor. Replaced the thermostat but still having the same issue. Coolant thermostat temperature below regulating temperature. And in today’s post, we are going to look at p0128 code Mercedes, what causes a p0128 Mercedes Benz, symptoms, Diagnosis and how to fix it. Coolant thermostat temperature below regulating temperature. source: what can keep causing check engine code p0128. P0128 code definition. Additionally, once the 160º F threshold is achieved, the recorded engine temperature must not fall below 160º F during operation. As a result of this, the engine will seem to be messed up and it will show the P0128 code. Before you get tensed about how the P0128 error code will start affecting you, you must know all about what this code means. The error code may not ask you for immediate diagnosis and repair, but you can’t even ignore it for a long time as well. Anytime you stop the vehicle — for stop signs, traffic, or other … If in fact you do need to use the worn tire as a … Chrysler thermostat rationality. You should have time to plan for the repair, and set an appointment with a good mechanic. This is a major code. How do I fix code P0128 | Causes of Error. Here are the most common causes of P0128: Thermostat Stuck Open– Far and away, the most typical cause for the P0128 code is going to be a thermostat that is stuck open. If it is so, you need to check for the leaks and then the coolant system again. Important: To be fair, you can easily travel for 500 miles from the time when the P0128 error code shows up but you need to rectify the error before you … With the P0128, you can drive the car for a while. 10 Best Toyota Tacoma Tonneau Cover Review, Tire Sidewall Damage – Causes & When to Replace, Throttle Body Problem Signs and Solutions, Throttle Position Sensor Cleaning – Tips to Clean Properly, 10 Best Cordless Ratchet Wrench Review and Complete Guide. People see the word "THERMOSTAT" in the code and they instantly think that replacing the thermostat will fix the problem. It was very hot here then. Can I drive it for another 10 days until I get paid so I can fix it? This is the last thing you want to do, but if the hoses do not show a blockage or coolant hindrance then the thermostat itself may be malfunctioning. When the correct engine operating temperature is reached, the powertrain control module orders the fuel system to … Make sure that you are considering the repairs before 1000 miles to avoid the dangerous situation. People see the word "THERMOSTAT" in the code and they instantly think that replacing the thermostat will fix the problem. The p0128 error code is not a serious issue, but not rectified and fixed on time, then this might lead to contamination of oil with water which can damage the car engine and then it will become serious. You can either replace the valves with new ones or work the valves back into a position where they can move up and down more freely. P0128 Causes: Jeep Wrangler. Replace the thermostat. Most auto repairs shops charge between $75 and $150 per hour. Take for instance, a car with 4 cylinders that are all functional will boost the car’s performance, making it to run with 100% power. To be fair, the P0128 is not the most difficult of all the codes that you need to consider. Minor. code p0128- thermostat malfunction. But you need to keep one thing in mind- whenever this code comes up; you need to make sure to get rid of the problem. Note that d riving with a misfiring cylinder causes a major power loss in the car. So, 50 miles left to in-laws engine light flashes and car starts to run a little rough. Most auto repairs shops charge between $75 … Thus, it can give wrong readings to the PCM at any time initiating to trigger this code. Well, I can't give you any specific information regarding your vehicle because you forgot to mention what kind of vehicle you have. If you start to ignore it for a long, it may become a big problem in the future. If so, it will always start reading the wrong temperatures. you can drive for along time on a bad O-2 senor. It means that the coolant of the car engine is not getting as warm as it is supposed to be like any other day. Coolant Temperature Below Thermostat Regulating Temperature means that the engine does not reach expected temperature after running for sufficient time, or in other words, takes too long to warm up. The thermostat is a mechanical piece with two important goals, helping the engine reaching its operating temperature as fast as possible and then keep that operating temperature stable … Not all of them are easy to diagnose and to repair and may take a longer time to rectify. After performing a Universal Trip Drive Pattern, the computer clears the code, since it’s “seen” that the problem is fixed and not reoccurring. In this case, the Check Engine Light may come on. We can back up here and you see where it says over here it says $0A, that's your mode 10 displayed permanent trouble codes. The second purpose of the CK ENG LT is to conserve fuel. Sometimes when the temperature is high and there is no radiator fan present with the engine, the temperature will never tend to a dropdown. Not just because it is one of the most difficult error codes to show up, but it is also safe to deal with. If you find higher levels of rust, the coolant is in poor condition. Read More » Cost of diagnosing the P0128 DODGE code Labor: 1.0 The cost of diagnosing the P0128 DODGE code is 1.0 hour of labor. HOWEVER, if the sensor is bad, you can get the code as well. ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic... FOXWELL NT301 OBD2 Scanner Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine... Autel MS300 Universal OBD2 Scanner Car Code Reader, Turn Off Check Engine Light, Read & Erase Fault... AUTOPHIX OBD2 Scanner Enhanced OM126P Vehicle Code Reader Auto Diagnostic Check Engine Light for All... Autel AutoLink AL319 OBD2 Scanner Automotive Engine Fault Code Reader CAN Scan Tool, QR Code Scanner: Free QR Code and Barcode Reader. A P0128 is a code is an indication of a faulty thermostat or ECT (engine coolant temp sensor). There is no immediate danger of breaking down on the side of the road. While not requiring immediate attention, this code should not be ignored indefinitely. Depending on the brand of the car, it might be one of several causes. If the engine appears to function normally, as before, it is likely OK to drive it. You should consider the complete cooling system overhaul. What is the severity of a P0128 code? P0128 is temp below threashold, ie its not heating up fast enough. The ohm reading will change and it will indicate that the sensors are working fine. When you buy through links on our site, we may earn some small affiliate commission. Your email address will not be published. For example, my CHT sensor failed in August. The P0128 code means that the engine coolant is not getting warm enough, fast enough. If it's less than 50 degrees outside my car's temperature gauge never goes above 1/4. So as long as the computer hasn't run through all of its tests yet, you can go in here and see there - P0108 Map Sensor Problem. you’ll notice bad fuel economy,won’t have the proper performance .They regulate air and fuel mixture so if you don’t need to go through a vehicle emissions test you should be fine.I just bought one for my jeep and paid just under $200. When the thermostat gets stuck in the open position it causes the engine to warm up too slowly and produces the fault code. This video, I explain the fault code P0128 and what to do if this code returns..It could be a glitch in your computer. What Does A P0128 Code Mean? The reason you should consider this is because the P0128 code can be a little misleading. Jeep Code P0128 Definition. The auto repair labor rates vary widely across the country, and even within the same city. You might even go up to a 1000 mile or more with this code on.
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