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The P0128 code in your 2014 Jeep Grand Cherokee indicates a potential issue with the engine coolant temperature (ECT) sensor or thermostat. To diagnose the cause, you can perform the following steps: 1. Start by checking the coolant level and make sure it is at the proper level. 2.. Gainesville florida weather radar

The generic P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature”. This basically means that the coolant in the engine isn’t reaching the ideal operating temperature and that the engine is essentially running cold. While it’s not as bad as having the engine run too hot (for obvious reasons), a cold ...Oct 28, 2023 · Frequently Asked Questions about the Jeep P0128 Code What is the normal engine operating temperature range? The normal operating temperature for the 3.6L Jeep JK Wrangler engine is around 195-220°F when warmed up and varying slightly based on operating conditions. If the PCM sees temperatures staying below 190°F, it will trigger the P0128 code. Marissawalkerjones94 Discussion starter. 1 post · Joined 2020. #1 · Feb 3, 2021. I have a 2015 Jeep Wrangler with thermostat rationality throwing a code on my jeep. The tech said it could just be a sticking thermostat but upon reading it could be an engine coolant temp sensor. My temp runs normal on my jeep, & everything runs normal.Feb 6, 2020 · 346 posts · Joined 2013. #1 · Feb 6, 2020. Threw a P0128 code just cruising around town. Deleted code and checked engine coolant. My fluid has always shown just a small amount just visible at bottom of reservoir, which was the case. Had radio talk-show mechanic tell me he had had to replace abnormal amount of engine coolant thermostats due to ... Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ...Stopped by the auto parts store to have the code checked. Came back P0128 stating coolant temp below regular temp. So the guy suggested a thermostat said …If you’re planning a trip to explore the breathtaking beauty of the great outdoors, there’s no better way to do it than with Pink Jeep Tours. One of the easiest and most effective ...P0128 Thermostat gasket/Housing replacement tutorial on a 2013 Jeep Wrangler 3.6 Don't forget to like and sub! ... P0128 Thermostat gasket/Housing replacement tutorial on a 2013 Jeep Wrangler 3.6 ...Yes, park on an incline and burp it, but notice that on the thermostat there is a round plastic screw. That is there to help bleed the system. You can get air trapped behind the t-stat and cracking the screw will help the air to get out. Will take much less burping letting the air out there. Wolfslash16 and geeve420.^!!! txt msgs r running language *ruining ^lol, jk!! :) In many casual discussions of language and the internet, it’s not uncommon to hear about how such “textspeak ruins language”...Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ...What Does Code P0128 Mean? Code P0128 stands for Engine Coolant Temperature Below Thermostat Regulating Temperature. It means that the ECM/PCM has “noticed” that the engine coolant temperature is consistently running below thermostat regulating temperature. In other words, the engine is running cooler than it should.Code c1252/traction control light intermittently on. I’ve got a 2016 rubicon hard rock and my traction control light is randomly coming on. Usually once every other week, comes on upon startup. Won’t go off on it’s own, but if I turn off vehicle and turn it back on it will be gone. Got a code reader, was surprised to find it wasn’t a ...Jan 24, 2020 · T. tonydee Discussion starter. 37 posts · Joined 2017. #1 · Jan 24, 2020. Hi, In my 2013 JKU (40,000 mi) I'm getting a P0128 code. This is happening frequently here in south east Pennsylvania in the winter. It did happen once in the summer. I keep clearing the code with my ODB II scanner. The temp is running 169-174 deg F according to the OBD ... Double failure monitoring to determine unique failure situations that could require unique limp-in functionality. The Diagnostic Trouble Code (DTC) sets when the failure is detected if the output speed gradient is less than a threshold for a calibrated amount of time. U1412 Jeep Code - Implausible Vehicle Speed Signal Received.2016 JK Rubicon Hard Rock Auto Trans 2008 Jeep Liberty Auto Trans 1988 E-150 4.9L 5 Speed Stick God Bless Our Troops. Reactions: jadehaley17601. ... After about 60 miles and 3 or 4 trips the permanent P0128 code cleared. However, when I run a live trace on the coolant temperature it comes up to about 203 - 204 deg F, which I am happy …2016, 3.6 Check Engine light P0128 coolant temp code. ... I don’t know if anyone has the FSM for JKs. The values would be in there I’m almost sure. ... A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, …Jan 20, 2022 · The generic P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature”. This basically means that the coolant in the engine isn’t reaching the ideal operating temperature and that the engine is essentially running cold. While it’s not as bad as having the engine run too hot (for obvious reasons), a cold ... 548 posts · Joined 2014. #1 · Feb 17, 2020. Hi all. I got DTC code P0128 this morning - probably stuck thermostat. 2015 JKU with almost 80K... so probably it's time. Jeep is covered with lifetime powertrain warranty.Whether you just want to be able to hack a few scripts or make a feature-rich application, writing code can be a little overwhelming with the massive amount of information availabl...3299 posts · Joined 2015. #4 · Nov 10, 2021. Thermostat stuck open. The first time mine did it, I just erased the DTM. P0128 is a permanent code, and will stay in the system until it completes so many cycles without detecting the low coolant temp. That said, after mine set the code again, I replaced the thermostat. hasn't been back on since.However, the Diagnostic Trouble Codes (DTC) were enough to put the Jeep into limp mode. U0414 – Invalid Data Received From 4-Wheel Drive Clutch Control Module. C1405 – Transfer Case Range Position Sensor Circuit High. I did a Google search for U0414 and came up with a posts in some Jeep forums indicating it is a bad transfer case switch.A new study from MartizCX shows that the Ford F-150 pickup truck, Jeep Grand Cherokee, Jeep Wrangler, Honda Pilot, and Honda Civic are the top car choices by rich Americans. By cli...JK Wrangler (model years 2007 - 2018) Engine code P0128. Jump to ... I recently had an engine light come on in my 2013 Wrangler Sport, 2dr. 6 cyl. Code was P0128. I found the code issue. My coolant reservoir was low. No leaks found. I added fluid and cleared the code (disconnected the battery for an hour). ... Engine Code P0128 on …Feb 17, 2020 · 548 posts · Joined 2014. #1 · Feb 17, 2020. Hi all. I got DTC code P0128 this morning - probably stuck thermostat. 2015 JKU with almost 80K... so probably it's time. Jeep is covered with lifetime powertrain warranty. 107 posts · Joined 2013. #1 · Mar 23, 2015. I recently got a code "P0128 thermostat rationality" on my 2015 Jeep SRT. I first had a Jet 180 thermo and recently switched to a Mishimoto 180. Anybody else ever get this code? Is there a way to clear and see if it comes back without going to dealer? Like.107 posts · Joined 2013. #1 · Mar 23, 2015. I recently got a code "P0128 thermostat rationality" on my 2015 Jeep SRT. I first had a Jet 180 thermo and recently switched to a Mishimoto 180. Anybody else ever get this code? Is there a way to clear and see if it comes back without going to dealer? Like.Do-It-Yourself instructions for replacing a thermostat housing in a 2012 Jeep Wrangler JK with a 3.6L V6 Pentastar engine. Fix the P0128 trouble code.2016 wrangler p0128. Got a 2016 wrangler with the 3.6l getting a code p0128. question the temp sensor cause it warms up fast and is normal on the gauge dash says 190 normal driving but got up to 220 today sitting and the fan never kicked on. Question is what is the normal operating temperature saw somewhere the fan won’t kick on till 240?Labor: 1.0. To diagnose the P0128 Jeep code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Mar 4, 2022 · 2016 wrangler p0128. Got a 2016 wrangler with the 3.6l getting a code p0128. question the temp sensor cause it warms up fast and is normal on the gauge dash says 190 normal driving but got up to 220 today sitting and the fan never kicked on. Question is what is the normal operating temperature saw somewhere the fan won’t kick on till 240? Watch as I replace the thermostat on my 2015 Jeep Wrangler Unlimited after getting the P0128 Error Code. 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. The Engine Control Module (ECM) determines this length of time based on ambient temperature.Jan 24, 2024 · Jeep Error Code P0128 refers to a diagnostic trouble code that indicates a potential issue with the cooling system. When this code appears, it means that the engine coolant temperature does not reach the expected operating temperature within a specified time frame. colorubi. To erase a code, use a scanner tool to remove that specific code. To dump all codes, remove the battery cable for 10 minutes, then reconnect. If you want to erase the adaptive memory completely and set the ECU to a new start up, remove the cable 10 minutes, reattach the cable and turn the key to the run position.Back in the fall, the P0128 code came up and I changed the Termostat. All was well. Fast forward to now - The P0128 Code came back up along with the P2181 and the P0118 Code. The Check Engine Light is on, and the temperature gauge is showing very low temp and the fan is constantly running. Sometimes the engine doesn't start right …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. Symptoms- CEL. Possible causes. - Insufficient warm up time. - Low engine coolant level. - Leaking or stuck open thermostat.P0128 Jeep Wrangler thermostat and housing replace diy. Code P0128 could be either the thermostat or the coolant sensor .Today I replaced the thermostat on o...About 63,000 Jeeps are being recalled because their engines might suddenly shut down. Fiat Chrysler Automobiles is voluntarily recalling about 62,000 Jeep Wrangler 4xe electric hyb...P0128 jk thermostatHow to fix trouble code p0339 for jeep jk unlimited rubicon 3.6l P0128 jeep wrangler code coolant temp thermostat below powertrain regardless generic means whichP0128 code. Photo galleryP0128 jeep wrangler coolant sensor replace diy 12-17 jeep wrangler 3.6l thermostat replacement fast overview p0128.How to fix p0118 p0128 for 2012 jeep Wrangler Sport Engine Coolant Temperature Sensor thermostatHow do I fix code P0118?What repairs can fix the P0118 code?R...In this video we replace Eugene's thermostat due to a check engine code of P0128.There was a helpful YouTube video for checking code - you quickly turn key several times on/off and code appears where mileage is normally displayed. Code: P0128. It’s coolant temp message.Below are the Diagnostic Trouble Codes ( DTC) that can be reported by the JK Onboard Diagnostic Computer. Refer to the simple Ingnition Key Procedure to read the codes from the dashboard. DTC codes are five characters long. The first character is a letter that identifies the system in failure: B – Body. C – Chassis. P – Power Train. U ...With a P0128 code, the first step is to get it properly diagnosed to figure out what is causing the malfunction in the coolant temperature circuit. Using the live data function of the FIXD sensor and app allows you to read and analyze engine temperatures to properly diagnose a P0128 code. >Click here to get FIXD for just $19.99 for a limited time!Tools Used:Milwaukee 2767-20 M18 Fuel High Torque 1/2-Inch Impact Wrench https://amzn.to/INNOVA 3612 Milwaukee Electric Tools 2557-20 M12 Fuel 3/8" RATCHETht...Oct 27, 2021 · P0128 Code and Coolant - JK 2012 Rubicon. Okay, so my engine light came on today. Stopped by the auto parts store to have the code checked. Came back P0128 stating coolant temp below regular temp. So the guy suggested a thermostat said it is quite common. If you’re planning a trip to explore the breathtaking beauty of the great outdoors, there’s no better way to do it than with Pink Jeep Tours. One of the easiest and most effective ...P0128 jk thermostatHow to fix trouble code p0339 for jeep jk unlimited rubicon 3.6l P0128 jeep wrangler code coolant temp thermostat below powertrain regardless generic means whichP0128 code. Photo galleryP0128 jeep wrangler coolant sensor replace diy 12-17 jeep wrangler 3.6l thermostat replacement fast overview p0128.Feb 11, 2022 · P0128 Jeep Wrangler thermostat and housing replace diy. Code P0128 could be either the thermostat or the coolant sensor .Today I replaced the thermostat on o... Feb 17, 2020 · 548 posts · Joined 2014. #1 · Feb 17, 2020. Hi all. I got DTC code P0128 this morning - probably stuck thermostat. 2015 JKU with almost 80K... so probably it's time. Jeep is covered with lifetime powertrain warranty. If you have a Jeep P0128 code, you must first diagnose the problem. Engine temperatures can be calculated and analyzed using the live data functionality of the FIXD sensor and app. RepairPal-certified shops have a minimum 12-month warranty on all repairs lasting 12,000 miles or more. It is possible that some repairs will be required to fix or ...A thermostat when operating properly will start to open at 203° and will be fully opened at 215°. Most thermostats that fail, fail in the opened position. The engine runs to cold for to long, and then throws a code. Your engine cooling temp, must reach 160°, with-in 15 minutes, or it will throw a code..FYI.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code JEEP P0522 Saving Repair ...2013 JK with Mopar 2in lift on Pinter Silver wheels with BF KO2 35in. Save Share. Like. ... P0128 code definition Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means The P0128 code means that the engine coolant is not getting warm enough, fast enough. ... A forum community …For the winter semester, 40 students at NUJS Kolkata will look at the limitations of law in the world of Harry Potter. For most people, reading JK Rowling’s Harry Potter series is ...Jan 24, 2024 · The P0128 code on a 2015 Jeep Wrangler typically indicates a problem with the engine coolant temperature. To fix this issue, it is recommended to first check the coolant level and ensure it is at the proper level. If the coolant level is low, topping it off may resolve the issue. However, if the coolant level is fine, the thermostat may need to ... 24 posts · Joined 2014. #1 · Jan 5, 2022. Hey everyone, I got a check engine light with the code of P0128 on my 2014 wrangler and going to replace the thermostat housing. I bought the mopar housing P/N: 5184651AH and a gallon of premixed coolant P/N: 68163849AB for $65 on amazon. I called the local dealership and a was quoted $107 for the ...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. Symptoms- CEL. Possible causes. - Insufficient warm up time. - Low engine coolant level. - Leaking or stuck open thermostat.It will come up with P0128 thermostat rational... If the check engine light is on in your jeep, dodge, chrysler, ram, I'll bet it's for this super common issue. It will come up with P0128 ...Feb 3, 2021 · Marissawalkerjones94 Discussion starter. 1 post · Joined 2020. #1 · Feb 3, 2021. I have a 2015 Jeep Wrangler with thermostat rationality throwing a code on my jeep. The tech said it could just be a sticking thermostat but upon reading it could be an engine coolant temp sensor. My temp runs normal on my jeep, & everything runs normal. The most common cause for the P0128 code on a Jeep Wrangler is a faulty thermostat. A faulty thermostat can be what is described as a "stuck open thermostat." Other issues can be low coolant, a bad radiator fan or water pump, an inaccurate engine coolant temperature sensor (ECT sensor), or a bad engine control module. Check Out The Latest Price!Feb 8, 2022 · P0128 Jeep Wrangler coolant sensor replace diy. Code P0128 could be either the thermostat or the coolant sensor .Today I replaced the coolant sensor on our 2... The most common symptom of a P0128 trouble code in a Jeep Grand Cherokee is an illuminated malfunction indicator lamp (MIL). Other symptoms may include poor engine performance and a decrease in fuel economy. Lack of heat– The most prominent symptom of the P0128 trouble code in the Jeep Grand Cherokee is the lack of heat. When the thermostat ...Nov 21, 2023 · Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ... P0128 is a trouble code often associated with a malfunctioning thermostat. Find out what P0128 code means, its symptoms, and how to fix it. Get 10% OFF EVERYTHING . ... a Ford, or a Jeep, the P0128 code is likely to appear once your coolant thermostat or temperature sensor fails. ...Jun 17, 2023 · The most common cause for the P0128 code on a Jeep Wrangler is a faulty thermostat. A faulty thermostat can be what is described as a "stuck open thermostat." Other issues can be low coolant, a bad radiator fan or water pump, an inaccurate engine coolant temperature sensor (ECT sensor), or a bad engine control module. Check Out The Latest Price! P0108 is a generic OBD-II trouble code. It indicates your Jeep Wrangler's MAP (manifold absolute pressure) sensor's voltage reading is outside of the normal operating range. The voltage is too high. It's most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. The MAP sensor measures the air pressure coming intoWalk through the steps for replacing a thermostat and housing. Once that is done follow up with bleeding the air out of the system. These steps will clear ...The most common cause for the P0128 code on a Jeep Wrangler is a faulty thermostat. A faulty thermostat can be what is described as a "stuck open thermostat." Other issues can be low coolant, a bad radiator fan or water pump, an inaccurate engine coolant temperature sensor (ECT sensor), or a bad engine control module. Check Out The Latest Price!#1 · Apr 4, 2023. My 2015 JK has been throwing P0128 codes for about a year. Usually only late at night or in the morning when it's cold. I have been just ignoring it as it goes away after a few cycles, or I erase it with Jscan. In the beginning after a few codes it logged a P0128 Permanent Fault Code that never goes away when erasing the new code.2016 JK Rubicon Hard Rock Auto Trans 2008 Jeep Liberty Auto Trans 1988 E-150 4.9L 5 Speed Stick ... I'll post up if that's the corrective action for the P0128 code.JK Wrangler (model years 2007 - 2018) Engine code P0128. Jump to ... I recently had an engine light come on in my 2013 Wrangler Sport, 2dr. 6 cyl. Code was P0128. I found the code issue. My coolant reservoir was low. No leaks found. I added fluid and cleared the code (disconnected the battery for an hour). ... Engine Code P0128 on …The most common symptom of a P0128 trouble code in a Jeep Grand Cherokee is an illuminated malfunction indicator lamp (MIL). Other symptoms may include poor engine performance and a decrease in fuel economy. Lack of heat– The most prominent symptom of the P0128 trouble code in the Jeep Grand Cherokee is the lack of heat. When the thermostat ...Fault Code P0128 advice. ... 12 JK, 3.5" Teraflex/Franken lift, Bilstein 5100's, BFG KM3's 37x12.5/R17 ... Last time out, I let the Jeep sit for 5 minutes idling, saw ...Jan 6, 2022 · 24 posts · Joined 2014. #1 · Jan 5, 2022. Hey everyone, I got a check engine light with the code of P0128 on my 2014 wrangler and going to replace the thermostat housing. I bought the mopar housing P/N: 5184651AH and a gallon of premixed coolant P/N: 68163849AB for $65 on amazon. I called the local dealership and a was quoted $107 for the ... Transmissions are a work of automotive genius. The transmission takes power from the engine and then multiplies this power through a series of gears to make the car go. When you ha...The engine code P0128 in a Jeep Wrangler refers to a faulty thermostat or coolant temperature sensor. It indicates that the engine is not reaching its operating temperature within a specified time frame. Causes of Engine Code P0128 in a Jeep Wrangler. The potential causes of engine code P0128 in a Jeep Wrangler can include:45 posts · Joined 2014. #1 · Dec 9, 2016. So i did some research and noticed that this code could mean some of the following... - Insufficient warm up time. - Low engine coolant level. - Leaking or stuck open thermostat. - Faulty MAP sensor. - Engine coolant temperature sensor harness is open or shorted. - Engine coolant temperature sensor ...Nov 21, 2023 · Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ... 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. Symptoms- CEL. Possible causes. - Insufficient warm up time. - Low engine coolant level. - Leaking or stuck open thermostat.

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jeep jk code p0128

Jan 20, 2022 · The generic P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature”. This basically means that the coolant in the engine isn’t reaching the ideal operating temperature and that the engine is essentially running cold. While it’s not as bad as having the engine run too hot (for obvious reasons), a cold ... 2014 Jeep Wrangler- Codes P2181 and P0128 Jump to Latest Follow 2K views 7 replies 4 participants last post by CarParts.com Jan 10, 2022Of course, they can't get it looked at in a timely fashion, so I'll do it myself. On the 2013 Wrangler JK, I have had the P0128 light on since having the water pump squeal replacement. Last week I replaced the thermostat (and housing-one piece) to the tune of ~$75, including a gallon of the $26 dollar OAT antifreeze. Light decided to come back on.In this video we replace Eugene's thermostat due to a check engine code of P0128.Feb 18, 2022 · Tools Used:Milwaukee 2767-20 M18 Fuel High Torque 1/2-Inch Impact Wrench https://amzn.to/INNOVA 3612 Milwaukee Electric Tools 2557-20 M12 Fuel 3/8" RATCHETht... If your Jeep Wrangler is throwing a P0128 code, the root cause is likely a faulty thermostat or low coolant level. But faulty sensors, hoses, or a bad radiator cap …The P0128 code is triggered when the engine control module (ECM) detects the engine coolant temperature (ECT) below the thermostat regulating temperature. This …If you are a car owner, you may have encountered the dreaded check engine light at some point. One of the common trouble codes that can trigger this warning is the P0128 code. This...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) ... codes P013A and P0128 2007 Jeep Commander 5.7 Hemi My Jeep is throwing those codes, but only in cold weather. After the fist time the Check Engine light came on I had ...The first and most common cause for the P0128 code is a faulty thermostat. The thermostat can get stuck in an open position, preventing the coolant from ever reaching the optimal operating temperature. However, you should check the coolant level first as it can also trigger the P0128 fault code. While you’re at it, make sure that your car is ...Oct 9, 2016 · 2016 JK Rubicon Hard Rock Auto Trans 2008 Jeep Liberty Auto Trans 1988 E-150 4.9L 5 Speed Stick ... I'll post up if that's the corrective action for the P0128 code. 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. Symptoms- CEL. Possible causes. - Insufficient warm up time. - Low engine coolant level. - Leaking or stuck open thermostat.Marissawalkerjones94 Discussion starter. 1 post · Joined 2020. #1 · Feb 3, 2021. I have a 2015 Jeep Wrangler with thermostat rationality throwing a code on my jeep. The tech said it could just be a sticking thermostat but upon reading it could be an engine coolant temp sensor. My temp runs normal on my jeep, & everything runs normal.Best Solutions for the P0128 Code. You can try several solutions to fix the P0128 code in your Jeep. Replace the Thermostat. It must be replaced if a faulty thermostat is causing the P0128 code. A new thermostat will regulate the flow of coolant and help maintain the proper engine temperature. Check and Refill Engine CoolantJeep Code P0128 means that your Engine Coolant Temperature is below the thermostat regulating temperature. Simply put, the coolant which helps regulate your engine’s temperature is colder than it should be. What happens as a consequence is that your engine will be running colder.Jan 24, 2024 · The P0128 code on a 2015 Jeep Wrangler typically indicates a problem with the engine coolant temperature. To fix this issue, it is recommended to first check the coolant level and ensure it is at the proper level. If the coolant level is low, topping it off may resolve the issue. However, if the coolant level is fine, the thermostat may need to ... .

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