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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.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, …2016 JK Rubicon Hard Rock Auto Trans 2008 Jeep Liberty Auto Trans 1988 E-150 4.9L 5 Speed Stick God Bless Our Troops. Save Share. Like. M. msetter Discussion starter ... I've got the P0128 Code. I ordered a digital laser infrared thermometer and will check the temp at the thermostat housing. I need the thermometer for other things, so …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. ...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. Learn the building code for sistering joists and why it's important for your construction project. Follow best practices and ensure safe and reliable results. Expert Advice On Impr...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.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 ...We got this 2015 jeep wrangler here with check engine light code p0128 Thermostat below temp. I will show you step by step how to change the thermostat and f...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...Its a 10mm and about 2 minutes of time to unhook a battery cable, thermo was stuck wide open as they are designed to fail that way and not closed. Heater will cook a steak with a new one installed. Reset it and forget about it, ive done a few of these over the years, always a p0128 especially if you let it idle before you drive it.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 ...2. Turn the ignition key to the “on” position without starting the engine. 3. Access the scanner’s menu and select “Read Codes” to retrieve the P0128 code. 4. After reading the code, select “Clear Codes” or “Erase Codes” option on the scanner to reset the code. 5.I need to get my inspection done but my CEL was on with p0128 code. I replaced the thermostat, drove a couple days and the CEL went off. Continued to drive for a few more days. I still cannot get inspected (NY) because the vehicle is showing a P0128 as a "stored" code (using Foxwell NT201 OBD reader), even though the CEL is off.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. To reset the p0128 code on a jeep wrangler, disconnect the battery for a few minutes and then reconnect it. When the code reappears, it indicates a persistent issue that needs to be fixed. The p0128 code is related to the engine coolant temperature being below the expected range. This could be caused by a faulty thermostat, a coolant leak, or a ...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.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.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 ... 447 posts · Joined 2016. #2 · Jan 23, 2017. That code is usually displayed when the engine takes too long to reach operating temperature (thermostat stuck open). So, under certain conditions after you clear the code, depending on outside air temp, driving conditions, it may warm up within the parameters the computer is looking for, despite ...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.86 posts · Joined 2015. #16 · Oct 15, 2015. Well here is a newb question. I just got the code after I started the Jeep and took off without being warm up. So the engine light pop immediately. Anyway the code is P0128 for Thermostat. So 2 questions: 1.May 11, 2023 · 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 Coolant Jan 7, 2023 · Code Definition. P0128 – Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What Does the P0128 Code Mean? P0128 is a generic powertrain code that means the engine control module (ECM) detected that the motor hadn’t reached its required operating temperature within the required timeframe set by the manufacturer.

P0128 Code. Thread starter Anybodyhome; Start date Mar 31, 2021; Prev. 1; 2; First Prev 2 of 2 Go to page. Go. OP . Anybodyhome USN Retired (1973-1993) Supporting Member. Joined Jun 15, 2020 ... Produced from 2007-2018, the Jeep Wrangler JK is a worthy successor to the TJ that came before it. I started Jeep Wrangler JK …4 posts · Joined 2019. #1 · Mar 26, 2020 (Edited) 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). No re emergence of the engine light yet, but I haven ...If the coolant in the radiator is properly topped off and there's no issue with the radiator cap and the coolant (HOAT for a 2008) is still within 5 yrs./100K miles, this could be the issue: Update - Dealer called - TSB for P2181 code. NUMBER: 18-015-10 REV. GROUP: Vehicle Performance. DATE: August 12, 2010.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.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.

Nov 5, 2018 · Fixing P0128 in the Jeep Cherokee is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows ... 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 …Learn how to create a QR code, and you can use it to accept payments, marketing, and more to engage with your customers on smartphones. Quick Response codes or QR codes are a great...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Of course, they can't get it looked at in a timely fashion, so I. Possible cause: 2016 JKUHR Billet Silver M/T - (current odometer 54k, paid $35,500 OTD wit.