P0128 Meaning :. The code is P0128, Coolant Thermostat, Coolant Temperature Below Thermostat Regulating Temperature. My 2005 Escape four cylinder generated an engine trouble code, P0128, a thermostat temp regulation problem. This code is a pretty common one and this site is here to help the average do-it-yourself (DIY) car owner (like you) troubleshoot, diagnose, and fix their vehicle themselves when presented with a. On top of that, I don't get cooling waves it just gets up to temp and stays steady at that temp. However, the temperature gaughe is working normal. Scan code P0128 14 Answers. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. he got code p0128, we changed the t stat, coolant sensor, flushed radiator. this morning I plugged in my bully dog power pug and code P0128 came up along. SEE no cat, and motor mounts, im just stumped what this code means, any help would be great!. It could still be the. But the problem i am having is that it keeps throwing the code p0128. I took it to the local Maserati dealership and they have not. These vehicles are very sensitive , they are built with various components to help bring the vehicle to a good finish. That's unless the PCM is seeing a skewed coolant sensor reading or it has some weird software calibration bug which both are highly unlikely. That code indicates that the computer is detecting that the engine is not reaching operating temperature within a reasonable time after startup. Wondered if someone had any further suggestions. Is there a regulator or something that could be cau. But, agreed, I did a quick Google to find a multitude of information on the P0128 code, and I suspect much of the same information could also be found in the VW Jetta forum on this site. OBD2 Code P0128 Buick definition: This means that the engine’s PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The P0128 can also be indicative of a failed IAT sensor as well. The intent of the P0128 code is to indicate a faulty thermostat. P0128 Ford Focus P0128 Ford Focus Code P0128 Ford Focus, Check engine light on, A P0128 Ford Focus trouble code is fairly common with the 2. P0128 code - R56 check engine light submitted 10 months ago * by Sbbike The check engine light in my 2009 R56 S came on last night and when I checked it I'm getting code P0128. If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes. Hope more expensive really means better. i have a 2003 kia spectra 75,000 miles, take very good care of the car. I am debating whether it would be easier to replace the whole assembly with thermostat. Dodge RAM P0128 Engine Trouble Code When your car's 'Dodge RAM P0128 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. Code was P0128. It is not necessary to drain all the coolant despite what some writeups say. Ford Focus Fault Code P0128 Your OBD-II Trouble Codes Repair Site. Code Analysis-P0128 I'm by no means a mechanic but I have read several times that there is an ideal mix of antifreeze and water. For P1338, if replacing the sensor does nothing your engine timing could be off. The code has to do with the thermostat not performing as specified, or the temperature sensor is not working. Scan code P0128 is thermostat coolant. P0128 is not the engine coolant temperatur sensor but the thermostat itself. The code has to do with the thermostat not performing as specified, or the temperature sensor is not working. P0128- What it Really Means, Causes, Symptoms, Severity, and Cost to Repair. any ideas what to check next. P0128 code is "Coolant thermostat (coolant temperature below thermostat regulating temperature). So i checked all fluids, and recommendations noted in the manuel and the sensor did not turn off. its something to do with the thermostat but various websites say it could be coolant temperature sensor cooling fan running constantly which it isnt!. ★★ Computer Speed Booster. Heat makes aluminum swell almost three times faster than cast iron. The code indicates a small leak in the evaporative emissions, or EVAP, system, which is commonly caused by a loose gas cap or a small hole in the cap. When the light came on for second time, I checked the coolant level, it was low. P0128 Engine Fault Code Check Solution For P0128 OBD Code : P0128 engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution. However your vehicle's manufacturer may have a different definition for the P0128 OBD-II Diagnostic Powertrain (P) Trouble Code. I will test the coolant & coolant temp when she gets home. Any thoughts? Comments? Thanks in advance for the help. When it was scanned, the temp gauge was sitting at normal. To, clear the code if it keeps coming back, dis-connect the negative batery cable for 1 minute and that will reseet the ECU. This has happened thrice. Check engine light came on in 2014 TC. P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) the sensor is located on the top of the thermostat housing. If the readings you get in the Coolant Temperature will not go beyond 160° - 170° F in the span of 15 minutes, then try to put your foot on the brake, shift to Drive and then press the throttle for around two to three minutes and see if the readings increase. An engine coolant temperature (ECT) sensor monitors the temperature of the coolant. The engine runs just fine. Porsche And Their Fault Code Meanings. I drove with it for the day and then later that night I cleared the code using my DiabloSport Trinity. In some cars, however, the problem could be solved by reprogramming the engine computer (PCM) with an updated software. when code is erased with code scanner the car drives ok. just open it to see thermostat ,is leaking from side. I have A 2005 Malibu "new body" style 2. The open t-stat will cause the engine to take longer to heat up and trigger the P0128 code. Hi everyone, I searched for this question as I was sure it had been asked before, but couldn’t find anything. Reset code P0128 after changing thermostat. Refer to EC-271, "DTC Logic". I am thinking about doing mine just because I want to avoid issue when I take my truck on a trip this summer around 500 miles one way. The check engine light is on. Engine Service light is on - code P0128 - Coolant has not reached proper temperature? I was driving on a hwy and all of a sudden Service Engine Light came on. Cause: Engine running, ECT and IAT inputs from 14-97°F, then the PCM detected the engine coolant temperature did not reach at least 167°F with the Water Temperature Counter Diagnostic running. This was really helpful! I had began to work on this. its something to do with the thermostat but various websites say it could be coolant temperature sensor cooling fan running constantly which it isnt!. 3 V6 engine. Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. I have a P0128 code and the amber CEL is on. Engine code P0128 Anyone know why im getting engine coolant below thermostat regulating temp? This only happens when I'm babying the truck if I play somewhat with the throttle the code dosen't show. 3rd Gen Dakota - Code P0128 - I have 2008 Dakota 4. Mack Engine Code - 4813 Engine Oil Thermostat Bypass Valve Mack Diagnostic Trouble Code - DEF Line Heater Voltage Above Normal Or Shorted High Diagnostic Trouble Codes 1121, 1122, 1156, 1157 - International. OBDII/EOBD diagnostics trouble codes definition. Several days ago, my CEL came on. Change the thermostat first it's a lot cheaper, unplug the neg battery terminal for 10 minutes to allow the code to erase and check it again. if the engine does not reach operating tempature quick enough, the power control module will set a code po128. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. This is a standardized code for O. It says faulty thermostat, but I have not noticed any symptoms what so ever and the tem gauge looks to be normal. Other than that it is just normal. But engine temp warning light came on. The P0128 is a common code for many owners using a lower temperature thermostat, but usually only during the winter or cold mornings. ASE certified technician and Managing Editor of TechShop Magazine, Eric Garbe discusses diagnostic trouble code P0128. New member so if im posting in the wrong spot or doing anything wrong at please forgive me gentlemen I should get the hang of this soon. So I started getting inlet vanos codes ( 2a98 2a7a 2a7c ), replaced the solenoids and it didn't do anything so I went ahead and got the cam ledges changed out. According to what I found, the code means that the coolant temperature is below the temperature at which the thermostat would open / function. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. me a Code P0128. P0128 Thermostat Rationality - With the engine running, start up coolant temperature less than 65°C (149°F), ambient temperature between -8°C (17. I am new to the forum here. Its been cold as hell here the past two weeks and the Caddy just started throwing code P0128 -- "Coolant Thermostat Below Thermostat Regulating Temperature", during the past couple of days. What are the symptoms of code P0128? The description for code P0128 is “coolant thermostat (coolant temperature below thermostat regulating temperature). i just replace the Thermostat and cleared the codes but the p0128 keep coming back. I went out and bought a code scanner to diagnose and the pic attached is the code that came up. which indicates that there might be a known glitch in the computer on early Mazda3s (2004 was the first year) that can cause P0128. DTC Descriptor This diagnostic procedure supports the following DTC: DTC P0128 Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature. Within two days/twenty miles' worth of driving of picking up the car, the light came back on again. All is good now. I went to Autozone and they ran the codes on my engine and P0128 and P0607 both came up. I checked the code, it says P0128 - "Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)". 3 for the week and on day 2 he called me to tell me that the check engine light came on so he used his father's OBDII tool and found a "P0128" code. I did notice a slight drop in coolant temp. Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. So I started getting inlet vanos codes ( 2a98 2a7a 2a7c ), replaced the solenoids and it didn't do anything so I went ahead and got the cam ledges changed out. I contacted on-star and was told it was a cooling system trouble code P0128. 3s hatch mtx). This code is basically the same for any make or model. Had our second P0128 code in the shop Friday. the thermostat can be stuck open a bit and heater still works, but pcm knows that engine is not warming up all the way because of what ect is telling it. i first received a CEL about a month ago, for a couple of days, and the CEL turned off by itself. i am getting the above codes in my 2001 XC70 (with about 120,000 miles on it). It is triggered when your Jeep Wrangler's coolant temperature fails to reach the proper operating temperature. What caused my vehicle to set a P0128 trouble code? The engine control module uses the Engine Coolant Temperature (ECT) sensor to determine whether or not to trigger a OBD-II P0128. all revisions are highlighted with **asterisks** and include additional diagnostic trouble codes (dtcs), software enhancements, updated lops and failure code statement. Similar codes: P0125 In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the. Hyundai Buyers Guide -- 2020 Hyundai crash tests, 2020 Hyundai service bulletins, 2020 Hyundai recalls. Q: The Check Engine Light came on, and I had a diagnostic, which showed code P0128, which has to do with thermostat. I cleared the code yesterday and it came back a day later on the way home tonight. Had a code reader plugged in and it came up with P0128 and P0128 (pd) codes - Coolant temperature and Thermostat problem. What can I do to fix this problem. (There are two P0128 codes logged. P0128 Code - too early Welcome to 9th Gen Civic Forum : 2012 Honda Civic Forums - 9th Generation – General discussion forum for 9th Gen Civic Welcome to 9th Gen Civic Forum : 2012 Honda Civic Forums - 9th Generation - a website dedicated to all things 9th Gen Civic. I checked the coolant level and it was below minimum level - so I added some to bring the level between max and min levels. Refer to EC-271, "DTC Logic". P0128 is not the engine coolant temperatur sensor but the thermostat itself. when code is erased with code scanner the car drives ok. Probable causes: Check Coolant Level - checked and ok Thermostat Defective - put a new one in today ECT Sensor Defective - No replacement part available at AutoZone. Dodge Caravan P0128 Engine Trouble Code When the check engine light comes Dodge Caravan P0128 code on the first you should check is the gas cap. An engine coolant temperature (ECT) sensor monitors the temperature of the coolant. CEL Code P0128 Well, I just fixed my secondary air system CEL (P0140), and the damn CEL comes back on today. The intent of the P0128 code is to indicate a faulty thermostat. I'm not exactly convinced it's actually stuck open. anyone know what it could be?. * Inspect the ECT sensor terminals and the ECT harness connector for corrosion. Hello, code PO128 is for thermostat. The coolant level is perfect so I know there aren’t any leaks. Key dance revealed P0128. The intent of the P0128 Buick code is to indicate a faulty thermostat. Repair Information for P0128 code. The fans would run and the a/c would be turned off due to the fact that the ECM does not know the true ECT and must assume an overheated condition in order to preserve the engine. However: if, as soon as I realize the gauge went out and before the MIL comes on, I read the codes, there is just one P0128. An engine coolant temperature (ECT) sensor monitors the temperature of the coolant. Driving home my check engine light came on my 2004 Mustang 3. Ok, car is 2002 M3 obviously So I've been fighting this check engine light for a minute now, and am now to the point of it driving my crazy. Rockauto had the lowest price for the motorcraft stuff, and it was a pretty simple fix, just a bit of time. he got code p0128, we changed the t stat, coolant sensor, flushed radiator. Welcome to the Saturn Check Engine Light codes page. Scan code P0128 is thermostat coolant. I let a friend borrow my '05 Sierra 4. OBD2 Code P0128 Buick definition: This means that the engine’s PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. P0128 code trouble. Performed software upgrade on the PCM per TSB# 18-061-16. Based on what I've found, this code indicates thermostat issue as the engine has not warmed up with-in established time limits. Check the "Possible Causes" listed above. Key dance revealed P0128. There is one O2 (oxygen) sensor in front of the catalytic converter (called upstream), and one behind it (downstream). I cleared the code yesterday and it came back a day later on the way home tonight. Locate the jacking spot for your car, lift the front end, and set it on stands. In other words the engine is running too cold – or at least the PCM thinks it is. OBD2 Code P0128 Buick definition: This means that the engine’s PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. It will not always throw a code. When the light came on for second time, I checked the coolant level, it was low. ” While Hyundai’s P0128 DTC indicates that the primary failure might be a stuck-open thermostat, remember that. Short version P0128 Thermostat Rationality P0128 JEEP Description Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. I have 2001 Toyota Camry LE 4 cylinders at 186k. IP: Logged. #07-06-02-003: Intermittent Check Engine Light On, DTC P0128 Set (Diagnose and Reprogram PCM, if Necessary) - (Mar 7, 2007) Condition Some customers may comment on a check engine light being illuminated. Check Engine OBD II or OBD-2 trouble codes, what OBD II codes mean, Ford Escape 2008-2012, Ford Explorer 2006-2010, Toyota FJ Cruiser 2007-2013, More The code P0128 essentially indicates that the. So i checked all fluids, and recommendations noted in the manuel and the sensor did not turn off. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there?. Reset code P0128 after changing thermostat. Since the vehicle has 135,000 miles on it, we decided to replace the thermostat as well as the coolant temp sensor. See here for a step-by-step guide on how to diagnose and fix check engine light code P0128. The code will direct the repair technician to an area to test. Assuming this is pretty straight forward but was wondering what the most likely culprit is (… 2009 Ford Explorer, 6 cyl, 4. Yeah the 86 with a 02 3800sc. Chk engine light comes on throws code 128. (There are two P0128 codes logged. If the PCM detects the calibrated amount of air flow and engine run time have been met, and the ECT has not met the minimum thermostat regulating temperature, DTC P0128 sets. What to check for:. P0128 code questions My dad recently bought a 2006 Silverado with a 4. If the ambiant temp is above 40 deg it reaches the set point (86* I think) within the timeframe. Check Engine Light on; Vehicle may not shift into the highest gear at freeway speed; Decrease in fuel economy. I pulled the code, P0128. I have a 2007 Maserati Quattroporte automatica (ZF transmission) with only 52k miles. i have a 2003 kia spectra 75,000 miles, take very good care of the car. Code P0128 may mean that one or more of the following has happened: Low engine coolant level ; Leaking or stuck open thermostat (already ruled out) Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor ; Faulty intake air temperature (IAT) sensor; I would suspect one of the bottom 3 is the issue. Aka its not getting up to 170 degrees. P0128 Acura Auto Trouble Code description with all kind of problems on car models. When the engine is cold, no coolant flows through the engine. P0128 Auto Trouble Code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission. A code P0128 may mean that one or more of the following has happened: Low engine coolant level; Leaking or stuck open thermostat (likely) Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor; Faulty intake air temperature (IAT) sensor; Possible Solutions. Hello, code PO128 is for thermostat. It could still be the. on the gauge, from the normal "just over 80C" to a bit under 80C. SOURCE: how do i fix the check engine light code p0128 on May be a faulty thermostat or the thermostat sensor. See here for a step-by-step guide on how to diagnose and fix Chevrolet check engine light code P0128. P0128 Code on 2007 SX4 If this is your first visit, be sure to check out the FAQ by clicking the link above. Getting the same code again. After owning my 2005 HL for over 14 years, I just discovered today that I can roll my drivers side windows down by turning the key in the drivers side door lock and holding it for a. In other words, there is a problem with the engine operating temperature not being reached within a certain. I was ready to punch the dealer after how hard it was to replace those 2 check valve/solenoids. They're 25 bucks at a hardware store and a general good tool to have. FIXD explains symptoms, causes, and severity of P0128. Looked at the service manual pages - should I now be looking at replacing another sensor in the radiator? Many thanks. Engine code P0128 Anyone know why im getting engine coolant below thermostat regulating temp? This only happens when I'm babying the truck if I play somewhat with the throttle the code dosen't show. DTC Descriptor This diagnostic procedure supports the following DTC: DTC P0128 Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature. For P1338, if replacing the sensor does nothing your engine timing could be off. Please help. Check Engine Light Code: P0128 - New Thermostat Kit If this is your first visit, be sure to check out the FAQ by clicking the link above. Starnge thing. Notice: Undefined index: HTTP_REFERER in /home/eventsand/domains/eventsandproduction. SOURCE: how do i fix the check engine light code p0128 on May be a faulty thermostat or the thermostat sensor. P0128 Information for specific makes. It will not always throw a code. I have a P0128 code and the amber CEL is on. Check Engine Light on; Vehicle may not shift into the highest gear at freeway speed; Decrease in fuel economy. A week later same engine light comes back on and code is P0128 (which is the thermostat code)?????. Car does …. I checked the code, it says P0128 - "Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)". on the gauge, from the normal "just over 80C" to a bit under 80C. Any of these Best Selling OBD II code readers will be able to scan your Mercedes-Benz. TechShop Managing Editor Eric Garbe provides troubleshooting tips for diagnostic trouble code P0128 Coolant Temperature Too Low or Faulty Coolant Thermostat. A code P0128 may mean that one or more of the following has happened: Low engine coolant level Leaking or stuck open thermostat Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor Faulty intake air temperature (IAT) sensor Possible Solutions Past experience indicates that the most likely solution is to replace the. If the PCM detects the calibrated amount of air flow and engine run time have been met, and the ECT has not met the minimum thermostat regulating temperature, DTC P0128 sets. P0128 Engine Diagnostic Code. trouble code PO171 system to lean bank one. I'm guessing it's my coolant temp sensor. Code P0128 may mean that one or more of the following has happened: Low engine coolant level ; Leaking or stuck open thermostat (already ruled out) Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor ; Faulty intake air temperature (IAT) sensor; I would suspect one of the bottom 3 is the issue. Hi, This same code came on my 04 trailblazer with a V6. All is good now. P0128 Trouble Code Information for makes: P0128 Acura P0128 Alfa Romeo P0128 Aston Martin P0128 Audi P0128 BMW P0128 Bentley P0128 Bugatti P0128 Cadillac P0128 Chevrolet P0128 Chrysler P0128 Citroen P0128 Dodge P0128 Ferrari P0128 Fiat P0128 Ford P0128 Honda P0128 Hummer P0128 Hyundai P0128 Infiniti P0128 Jaguar P0128 Jeep P0128 Lamborghini. P0128 Mercedes-Benz Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) check for the real temperature using a laser temperature gun pointed at the thermostat housing when the car is warm (driven at least 10 miles) if the thermostat housing is less than 88 degrees Celsius then the thermostat has failed open (as its supposed to do). The P0128 code means that the engine coolant is not getting warm enough, fast enough. anyone know what it could be?. even with A/C on. When is the code detected? If the Powertrain Control Module (PCM) detects the calibrated amount of air flow and engine run time have been met, and the Engine Coolant Temperature (ECT) has not met the minimum thermostat regulating temperature, the code P0128 will set. Chevrolet Code P0128: Coolant thermostat temperature below regulating temperature. I've been monitoring my ECT via my AP like a hawk since it threw this code twice. on the gauge, from the normal "just over 80C" to a bit under 80C. A code P0128 may mean that one or more of the following has happened: Low engine coolant level Leaking or stuck open thermostat Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor Faulty intake air temperature (IAT) sensor _____. Seems like this year my truck is showing its oldness (2003 isnt old to me,. The Hyundai’s P0128 is a two-trip DTC, indicating that the above enabling criteria must be met on two separate occasions before the MIL will illuminate, which is why the first P0128 failure might be found under “pending codes. 2005 chevy trailblazer ls: lt. so does this mean that the thermostat is failing? ive been questing it lately anyway due to the fact that on the first start up of the day the gauge goes from cold to normal operating temp in under 3 minutes/ around an 8th of a mile i think. Not willing to pay for reading a code , the attendant nicely went out and read the P0128 code. Probable causes: Check Coolant Level - checked and ok Thermostat Defective - put a new one in today ECT Sensor Defective - No replacement part available at AutoZone. 3 for the week and on day 2 he called me to tell me that the check engine light came on so he used his father's OBDII tool and found a "P0128" code. This article shows you how to use an OBD II scanner to read the check engine / ECU fault code. CEL fault codes P0300, P0301, and P0302. i would like to do some checking before sending the car out, but my problem is i do not know where the vacuum hoses are. The code has to do with the thermostat not performing as specified, or the temperature sensor is not working. Part #: Duralast 72403 The first time the weather got cold around here I had the check engine light show up on the dash. P0128: JEEP - Thermostat Rationality. This time I checked with Peake tool and got code 19 25 A8. FIXD explains symptoms, causes, and severity of P0128. Read more about testing a thermostat. Would anyone be able to explain what this means?. The extra time will be sure to clear out the engine codes. If you cannot find it then go to the Honda Owners web site and. On top of that, I don't get cooling waves it just gets up to temp and stays steady at that temp. EVIC showed engine temp at 181. Read more about testing a thermostat. So I topped the coolant and the light went off. 9L V6, but the car ran fine all the way home. i have a 2003 kia spectra 75,000 miles, take very good care of the car. The MIL came on indicating a code P0128. I second that response. Scan code P0128 is thermostat coolant. The intent of the P0128 code is to indicate a faulty thermostat. P0128 Meaning The thermostat is a component that blocks the flow of coolant to the radiator until the engine has warmed up. Other than that it is just normal even with A/C on. P0128 Code- Replaced TSTAT and Coolant, Light is still on If this is your first visit, be sure to check out the FAQ by clicking the link above. I've been monitoring my ECT via my AP like a hawk since it threw this code twice. I went out and bought a code scanner to diagnose and the pic attached is the code that came up. If you can help us with this, we'd certainly appreciate it. Saturn Check Engine Light Codes. Seems like this year my truck is showing its oldness (2003 isnt old to me,. Another consequence of P0128 engine overheating may be a blown head gasket. Code P0128 Meaning The powertrain control module (PCM) tracks how long it takes for the engine of a vehicle to reach and maintain the correct operating temperature. The Hyundai’s P0128 is a two-trip DTC, indicating that the above enabling criteria must be met on two separate occasions before the MIL will illuminate, which is why the first P0128 failure might be found under “pending codes. It will not always throw a code. Hello Guys, I am really stumped. So I'm getting this p0128 code. anyone know what it could be?. simple repair, just a simple thermostat replacement. After owning my 2005 HL for over 14 years, I just discovered today that I can roll my drivers side windows down by turning the key in the drivers side door lock and holding it for a. BMW E90 330i N52 Misfire fault codes OBD p0302 p0300 P0128 p0301. ComTPE27Frandy Sax En La Vega 16-1-2006 Www. These vehicles are very sensitive , they are built with various components to help bring the vehicle to a good finish. According to what I found, the code means that the coolant temperature is below the temperature at which the thermostat would open / function. Hi everyone, I searched for this question as I was sure it had been asked before, but couldn't find anything. So i manually cleared the code. The intent of the P0128 code is to indicate a faulty thermostat. Drove errands Sat and Sun. Average Reporte. However, the temperature gaughe is working normal. Normally, a P0128 code can be caused by a defective thermostat or a bad engine coolant temperature sensor. trouble codes p0014 p0128, Question - 2005 chevy trouble code (dtc) p0014 related tsbs, 2002 chevrolet envoy ignition module tsb repair tutorial on how to change the air injection. The truck had the MIL came on Sunday then by Tuesday, it turned off. It goes up only when driving up hill. -Rod Add your comment to this topic!. check engine light came on, code reader says it's a p0128 coolant temp too lowanyways, the car seems to warm up fine , and I get hot air from the heater, however the temp gauge when driving is about 1/8 inch below the normal mark whne the car is fully warmed upwhat do you guys think?. However: if, as soon as I realize the gauge went out and before the MIL comes on, I read the codes, there is just one P0128. Ford Focus Fault Code P0128 Your OBD-II Trouble Codes Repair Site. 3rd Gen Dakota - Code P0128 - I have 2008 Dakota 4. The check engine light is on. What are the symptoms of code P0128? The description for code P0128 is “coolant thermostat (coolant temperature below thermostat regulating temperature). Dodge Caravan P0128 Engine Trouble Code When the check engine light comes Dodge Caravan P0128 code on the first you should check is the gas cap. You may have to register before you can post: click the register link above to proceed. anyone know what it could be?. Often this code causes the Check Engine light to come on and off in cold temperatures. Code was P0128. P0128 Diagnostic Trouble Code Discussion for May 2010 Thermostat System Malfunction * Note: This is a professional automotive technician's resource. We were seeing a P0128 code which indicates; Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). anyone know what it could be?. The engine runs just fine. Is this an easy DIY job that can be swapped at home by simply clamping off the hose?. A P0128 is an insufficient coolant temperature code. Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. I habe my cold coolan. However, if it is found in conjunction with DTC P0125 it is most likely a skewed ECT sensor (but this code alone can still signal just a bad ECT sensor as well). Generally caused by a thermostat that is partially stuck open and/or low engine coolant. Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. He went to a local garage an they told him the coolant temperature sensor needed to be replaced ($70 for the part, $190 labor). Since the vehicle has 135,000 miles on it, we decided to replace the thermostat as well as the coolant temp sensor. Sat coming home from work my CEL came on. I have just purchased a 2005 C230 Kompressor with a code P0128. Aka its not getting up to 170 degrees. It's a mini cooper clubman. Scan code P0128 14 Answers. This input is used by the powertrain control module (PCM) for engine control and as an enabling criteria for some diagnostics. The shaft looks bend. the description is "P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)" the car has about 160k on it and believe the thermostat and coolant are original (few service records). So my SES light turned on today and I went and had it scanned at Autozone and turns out the code the computer is throwing is a P0128 code. I have a P0128 code and the amber CEL is on. What the P0128 code means. I had P0128 and P0128 (pd) code on 2001 camry with only 55k miles, check temperature gauge shows low up to long time and when i drive in traffic was showing normal, decided to change thermostat with OEM, Got from dealer for $28 + $6 for seal. Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. Flush the system to get any contaminents out first (suggested,not required) SOP on that code would basically be to clear it and see if it comes back. 9L V6, but the car ran fine all the way home.