P0128 duramax lml

P0128 duramax lml. The L5P has made great reliability improvements and is, in my opinion, the most reliable diesel engine Nov 26, 2012 ยท 1. DPF deleted, new exhaust, EGR delete, cold air intake, Airdog 165 lift pump and EZ Link programmer. Like New w/145k Miles. Jump to Latest Follow. Only when it was -30 -40 -50c would idle temps drop. The ECT sensor temperature is colder than -39ยฐC (-38ยฐF) for more than 60 seconds. Oct 24, 2011 ยท check engine light glow plugs p0670 remote start. It was averaging around 9 mpg. That does not seem up to temp. Jul 4, 2016 ยท Another of the codes is likely a failed #3 (I think) fuel injector. Built in heaters will run after the truck is started. #1 ยท Oct 24, 2011. Importantly, the broken cylinder is mainly responsible for code p0676. The fuel temperature sensor is less than -50ยฐC (-58ยฐF) for 5 seconds. Today when I started the truck, all the service traction control and other things were gone, the check engine light was still on, throwing a U0101 code and now also a P0880 code. Feb 23, 2010 ยท If the ECM detects an excessively high IAT signal voltage, indicating a low temperature, DTC P0113 sets. New down pipe and 5 inch exhaust, new up pipe, cold air intake, new garret stage 1 turbo, Airdog 165 lift pump, EGR delete and EFI Live. May 12, 2019 ยท The truck will not heat up to normal temperatures and keeps throwing P0128 code. Now since the engine swap I have gotten it 3 times in 3 days with outside Temps about 65. 6L design, many major engine components were completely refreshed in order to increase power as well as engine reliability. Jan 7, 2023 ยท Based on the meaning of the P0128 code itself, the most obvious symptom would be that the engine canโ€™t reach its normal operating temperature. Ok guys, I got this code about a month ago for the coolant temp low. Step-5: Install a new cylinder. Being a 2011 you are at 6 years on the batteries. I have been trying to figure out a pattern for when it happens, and it seems like it only happens when I am slowing down and almost at idle. I watched a few videos. The ECM supplies 5 volts to the ECT signal circuit, and a ground for Nov 3, 2021 ยท 2016 LML GMC 2500. tim. Besides when we first flashed the the tunes it fried the ECM. Nov 3, 2013 ยท 209 DMAX. Feb 13, 2015 ยท Drove the truck about a half mile, and then stopped at a stop light and noticed it had a rough idle as well. Itโ€™s easier if you pull off some of the intake tubing. Dec 26, 2020 ยท This is some information I put together to help people better understand the P0087 fault code and what can cause in on LBZ Duramax. I have read a few threads. 2012 Chevy Silverado 2500 HD LT, CC/SB, 4x4, 6. This is an older thread, you may not receive a response, and could be reviving an old thread. Nov 29, 2019 ยท The ECM detects that the ECT Sensor is warmer than 149ยฐC (300ยฐF) for more than 10 seconds. Brought it to the dealer twice they couldn't find a problem. A fault in sensor one causing a P0113 would also potentially cause the P2199. The IAT is less than -39ยฐC (-38ยฐF) for more than 2 seconds. Live logging during a 20min test drive shows temps primarily in the 160s. :woopass Proud Member of "the pup bros":woopass . lower left side/front of engine. :sorrysign for the long read, tried to be as descriptive as possible. Please consider creating a new thread. The lines get kinked, or collapse. Even if there is/was a def tank issue, the P0420 is a different problem) Regardless, P0420 is related to HC (hydrocarbon (diesel)) conversion rate not a DEF problem. My dad's truck is a 2013. It could be carbon buildup resulting in a stuck valve, bad sensor, or a dirty MAF sensor. 3 May 14, 2016 ยท 11-16 LML Duramax Powertrain. It Sep 22, 2014 ยท Chevy / GMC Duramax 11-16 LML Forums. P0183 or P0188. 2015 Chevy 3500HD LTZ CCLB 4x4. Mar 31, 2016 ยท Strange code p268a. GM increased oil film thickness by changing the main bearingsโ€™ profiles. Dec 31, 2018 ยท 2 posts ยท Joined 2015. Sep 27, 2015 ยท DTC P0128 will only run once per ignition cycle until a Pass, Fail or Disable condition exists. rohrer ยท Registered Apr 9, 2020 ยท Central,Louisiana. if not just get limpmode deleted like I did,its just a pain in the butt anyway. Action Taken When the DTC Sets. Mar 23, 2017 ยท I'm currently in Mexico and trying to assist a 2011 owner who keeps getting codes P22A0 and P22A1 and sometimes the Service Emissions System message. P0118. It seems it's at least a couple grand for the fix, as the trans needs to be removed or the cab needs lifted for access. It starts moving off 160* when the coolant gets above 100*f. This can be cause by a faulty ECT or a thermostat that is stuck open. Symptoms include hard start/no start, rolling idle, fuel pressure drop wi Mar 6, 2012 ยท Like said, the factory temp gauge is pretty inaccurate. 2012 GMC 2500 Sierra SLE Duramax 4X4. To be completely honest I never thought the thermostat read correctly before I got the code but it is clearly Thermostat Kit, LB7 LLY LBZ LMM, 2001-2010, Duramax. Jun 13, 2019 ยท Chevrolet Silverado 2500 HD LTZ Crew Cab Pickup. Its a buddy of mines truck and we put a TechII on it and get these codes: P0128- ECT below thermostat regulating temp P0300- Engine Misfire P0306- Cyl. Did oil change Oct '17 and drained most of the oil out till I forgot I had an Amsoil oil analysis kit. It was gone for a couple weeks. They cleared the code, took it for a 35 mile test drive, and said no other issues since the code did not pop up again. Mar 12, 2012 ยท Perform the following steps when encountering a P2610. s. I towed a 6000 lb trailer this past weekend on the highway, and cruising at 70 mph temp would hover around 185-190. 2020 GMC Sierra SLT 3500 CC/SB L5P 3/14/20 Payload 3726lbs. Hey all, check engine light came on 4 days ago, pulled the code (and cleared it) yesterday and it was P0670. Jan 27, 2024 ยท The P0128 code is set when the engine control module (ECM) determines that coolant temperature is lower than the original equipment thermostatโ€™s opening temperature. #2 ยท Mar 1, 2014. Offer valid 3/14 - 3/18. DTCs P0116, P0117, P0118, P0128 are not set. It immediately went into limp mode, threw a P0087 Dec 14, 2012 ยท 18259 posts ยท Joined 2008. Save $20 on your order of $250 or more*! Use Code LUCKY20 OR. Feb 15, 2017 ยท There's some LML's so it should be the same beast. They are different sensors. Feb 27, 2016 ยท This morning, I started my truck remotly, ran for about 6 minutes and when I went to get in to drive, my display showed "engine power is reduced". Here are a few you may notice. 2008 Silverado LT, Crew Cab, 2WD,LB. Description: Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature. Could be your ECM that is the problem. I'm also trying to find where the thermostat is located. Jump to Latest Follow 21 - 25 of 25 Posts. #2. But I'd drop down to 75c with leather front. This is how i fix my check engine light for code p0128 which suggested i change the thermostats . Feb 19, 2019 ยท This is a video I put together of me replacing my thermostats on my 2011 Duramax Diesel. You can ohm across the sensor to see what the resistance is. If the code is setting as soon as the key is turned on, this sounds like it may be a sensor problem, or the wiring to the sensor. Oct 3, 2015 ยท I keep getting a P0128 engine coolant temp low code. The truck will still build full rail pressure and drive fine - at least for awhile. Loosen the bleeder valve, pump the pump. Aside from that, there arenโ€™t many associated symptoms with this trouble code. Mar 9, 2010 ยท since you got your egr blocked you might want to try to install the fingerstick as well. The second last code is common to see with a failed thermostat. It's part of the electro-viscous fan clutch. Lots to read. The LML Duramax shocked its rivals when it was revealed, offering 397 horsepower and 765 lb-ft of torque while simultaneously lowering emissions and improving fuel economy. ๐Ÿ‘. The cooling fan is clearly locked up because the truck sounds like a jet at all engine speeds. May 13, 2017 ยท My 2012 LML threw a P0128 code this morning. 0 however, truck drives normal and builds boost normal. The engine control module (ECM) uses this diagnostic to determine if the engine coolant temperature (ECT) has reached the minimum calibrated thermostat regulating temperature. Also early trucks had a problem with the rubber fuel hoses at the driver side valve cover, and below the drivers feet area. '06 3500 dually w/ LBZ 310,000 miles. green intake system-4" exhaust 6" tip. My 2012 LML threw a P0128 code this morning. When the gauge is straight up the engine is at 185*. Fuel contamination. Using the tech2. All manuals and user guides at all-guides. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Pulled over on side of the ride where it was rather rough, killed it, re-started and it went back to normal, first bump i hit on the intestate it went back to reduced Dec 6, 2013 ยท Basically what is happening when P0191 sets is the ECM is having to command a regulator % that is out of a specified "normal range" in order to maintain the desired rail pressure at idle. Yesterday I took it to a very reputable transmission shop to have a look and see if he could find anything. Sep 12, 2021 ยท P103, at least for my 2008 LMM, says the output is: "The ECM detects that the MAF sensor is greater than 527 g/s for greater than 3 seconds" Since the normal idling MAF output is about 40 g/s, you are wildly out of range. There is another code in the TCM that you need to pull that will actually tell you what the malfunction is so let me know what that code is and I will help you out. Sep 24, 2017 ยท September '17 coolant reservoir split again on the side closest to the motor (capped side). 815-977-5865 Mon - Fri 8:00 - 5:00 PM CST. 521 posts ยท Joined 2008. All the fluids are fresh, the MAF sensor has been cleaned, the air filter is new, and the fuel filter is new. 1 2. P2199 is saying that sensor one and sensor two are reporting values that don't correlate. Jan 3, 2017 ยท mizterwizard. Lots of testing scripts are shown in the P103 attachment. Nov 19, 2019 ยท Truck should run fine even with temps below that. But you may notice that the cylinder of your Duramax engine is broken. 18*F should have nothing to do with your problems. Remove the 12mm bolt holding the black coolant pipe to the thermostat housing. Conditions for Running the DTC. The engine run time is more than 8 minutes. I was looking for a wiring diagram for the EGR and cooler bypass valves. Feb 1, 2015 ยท My 2015 has 57,000 miles on it and got this code yesterday, and its not running right now, I cant find any information on this code anyone help me out some. May 4, 2016 ยท Check your filter. My truck is a 2015. Jump to Latest Follow Jun 16, 2010 ยท 07. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different. My brother's 2013 had the same code (and condition) and the dealer warrantied the fan clutch at 600 miles. Mar 18, 2014 ยท I run a banks tuner basically to see the extra information available on the hud versus stock. Put plug back in as there was maybe 2 litres of oil left in the pan. Jun 4, 2014 ยท Conditions for Setting the DTC. Maybe check the connection to the fan clutch. 3. Is it safe (i. We kind of need to do a hour drive (not towing) shortly. #1 ยท Jun 8, 2013. All the 700 code does is tell the ECM "something's wrong" and to illuminate the MIL. They replaced def injector. Save over $500 doing it yourself . It seems to come back whenever it gets cold outside (around 30-40 Jan 2, 2013 ยท 216 posts ยท Joined 2011. If there is air in it and you canโ€™t prime it with the pump on the housing, you can either rebuild or replace the housing. However, the problem is still there. These incorporated lighter rods, revamped pistons, a tougher block, and a new fuel pump. 4932 posts ยท Joined 2012. DTC P0128 is a Type B DTC. Here recently my truck has been throwing P0088 Rail pressure too high codes at random. The vehicle will not start. 2005 Chevy 2500HD D-Max 419,000 miles when traded. When it reads 185* its actually only about 130-140. Sent from my Autoguide iPhone app Jul 24, 2019 ยท DTC P0128. Jan 21, 2022 ยท 2. MotorTrend Jul 31, 2021 ยท Updated: July 31, 2021. 2924 posts ยท Joined 2016. Relay is responding incorrectly to the ECM command to de-energize. Often this code causes the Check Engine light to come on and off in cold temperatures. Ford Powerstroke. 6L Duramaxโ„ขDiesel Engine RPO LML This PI was superseded to update Condition/Concern. Is this a stuck open thermostat or something along those lines? I used to get it seldom when I had the old motor and when it was very cold out. Dec 5, 2008 ยท The trucks check engine light came on and thru a P0402 code, Excessive EGR or Flow. 9161 posts ยท Joined 2013. Talked to an acquaintance who used a diesel shop not far from where I stopped and had to towed there. Jan 4, 2020 ยท side (fender side) of the coolant surge tank until it reaches one-third of the capacity. 7 posts ยท Joined 2017. 6L LML Duramax has what it needs when you purchase the Crate Engines at XDP. 6hrs into a 9hr interstate drive, and 15 minutes after filling up at Exxon, cruising at 85/90mph, my truck made a sound very similar to a thrown rod (loud rapid metallic sound on the drivers side of the motor that lasted roughly 2seconds then disappeared). That the coolant temp and air temp disagree by more than 32 F but less than 180 F after 10 minutes of running. 5 (LBZ & LLY) 2016 GMC Sierra 2500HD SLT 4x4 LML CCSB DTC P0128 is designed to detect for a stuck open thermostat. 2012 GMC 2500 SLT 4x4. Sep 16, 2013 ยท Hi, I have a 2006 GMC 2500 LBZ with 171k miles. rovobay Discussion starter. Remove the four 12mm bolts in the thermostat housing. Jun 17, 2022 ยท The 2011-2016 6. The downpipe is wrapped in a thermal weave to keep EGTs at their absolute lowest. Now the nightmare begins. I've tried to do a little research and have lacked a good answer. The Check Engine light will come on, he scans for codes, sees P22A0 and P22A1, so he erases the codes, and the check engine light goes out. 2. #3 ยท Dec 14, 2012. The LML engine was the first major revision of the Duramax and according to GM, over half of the internals were new components. #1 ยท Jan 1, 2013. The fuel temperature sensor is more than 150ยฐC (302ยฐF) for 5 seconds. #8 ยท Jun 1, 2018. The code P0128 refers to the issue regarding the temperature of the coolant that is way lesser than the optimum thermostat temperature. (coolant not up to temp fast enough) i belive the thermostat is stuck open. 4. Anybody know what the dtc P2599 means? No cel but the edge is pulling that code. Retail customers only. That code is for excessive EGR flow. Diagnostic Aids. Replace the pressure cap. Apr 13, 2012 ยท A P0128 means that it is taking too long for the coolant to come up to temp, not that it's not hot enough. Jul 25, 2016 ยท DTCs P0097 and P0098 are Type B DTCs. Jan 7, 2023 ยท In this video I walk through diagnosing a P0087 trouble code on a 2006 GMC Duramax. e. Feb 13, 2016 ยท After the ignition is turned OFF before ECM power down. #2 ยท Apr 22, 2013. One is restricted fuel filter, fuel lines or gell in the lines. The Boosted Performance LML downpipe bridges a perfect balance between quality and performance. I think I have it narrowed down to possibly bad thermostats allowing coolant to flow Out of the Feb 4, 2016 ยท CODE P0128 What Should I Replace. No code went off in the dash but I decided to pull codes on the Edge, and code p0284 popped up. Engine temperature remains below normal. Replaced Engine Coolant Temp sensor and cleared the code. It takes more time to get the engine to the right temperature. Dodge Cummins. I have been getting the P0128 code and loosing coolant. Sep 4, 2012 ยท Dynaguy03 Discussion starter. I had code P0128. Jan 30, 2014 ยท 2011 GMC Sierra 2500HD LML EC/SB Black/Tan H&S Mini Maxx / S&B Intake / 5" Flo-Pro / FASS 150 Ti / Nictane / DE Downpipe / Cognito UCA's / Pitman-Idler Braces / XD Spy's / Sleeved / Blocked / Re-Routed / T-Rex Boost Pipes Manifolds Up Pipes & EGR Delete / 295/70/17 Dynapro ATM Jul 16, 2021 ยท At random times the "Reduced Engine Power" message will display with no CEL and no codes (I carry a foseal reader with me). And it will begin to produce p01f0 code Duramax when the engine coolant temperature falls below the standard temperature. Dec 18, 2016 ยท 2006 Silverado 3500 crew cab dually Duramax LBZ. #2 ยท Jan 3, 2017. Google works (Duramax P128E) this brings up all the diesel sites. had the same problem and that took care of it. p. You may need a new battery and that can fix all those codes. The truck goes into low power. Been deleted and we did a turbo back exhaust and tuned it with an H&S mini max pro. I blocked the EGR and no codes for about 30 mins, then the EGR flow and coolant temp codes popped up. Engine coolant level is fine. The vehicle is very slow. #1. Check engine light came back after sitting over night and warmed up before heading to work. I changed the filter and reset the codes and made it home but the same problem came up (went about 60 miles). Well this morning I threw code P0128 and have notcied my truck seems to always run on the cool side like 160ish. unless something has changed drastically between the LLY and LML, I don't see any reason for cold start issues. Thought I just had air in the system so bled the air and had the code cleared. High resistance on either the IAT sensor 2 signal circuit or the IAT sensor 2 low reference circuit could set this DTC. A new, improved engine block casting was used. P0113 indicates that sensor one signal voltage is high. Feb 1, 2024 ยท Price: $249. It has been throwing a Code P0091 and going to reduced engine power mode. ECT sensor stays about 15 degf lower than gauge and never gets much above 170 degf even here in Florida. While the engine uses the same 6. 5 LMM duramax with full MBRP exhaust (DPF & CAT deleted, HPTuners custom tune Westers Garage, S&B CAI) Just developed a rough running condition. Dec 26, 2008 ยท Dec 26, 2008. The diag is simple, if compression is good, needs an injector. I replaced the water pump and thought that was it. DTCs P0182, P0183, P0187 and P0188 are Type B DTCs. I understand I should address it sooner than later. To be more precise, there are issues prevalent with the engine coolant. Checked FPR1 and it was clean,no metal. Hey guys, so I just got the CEL and got code P140A. You already know what caused the P0128 code and what it means. But a P0128 code in the Duramax engine could be caused by some other signs. However, repair the cylinder with the help of a mechanic. I got out of the truck and couldnt hear the knock to much anymore so I ran Jan 7, 2023 ยท Other Signs That Your Duramax Seems to have P0128. Feb 15, 2023 ยท LML CP4 failure; code P0087, P0088. This has the LML motor which was used in all chevy and GMC diesels f Jan 23, 2013 ยท 2016 White High Country Duramax PPEI ECM and TCM Tunes 5" Flo Pro, Fass 150 and Beans Sump Edge Insight CTS2 TRS 5000K HID's, TRS Fog Lights Cognito 4-6", 325/55r22 Nitto Trail Grapplers, 22x12 Fuel Forged FF19 SOLD: 2011 Chevy 2500HD LML Black SOLD: 2008 Duramax with lots of go fast parts Jul 9, 2014 ยท 2006 GMC CC SB LBZ with Allison and 66K miles (I know, barely broken in) Truck started throwing a P0852 code last week after towing my boat for 65 miles. egr blocked - pcv reroute. Duramax engines have a built-in coolant temperature sensor. Fuel filter change message. * The ignition is ON. Dec 4, 2007 ยท P0700 is the TCM requesting a MIL (Malfunction Indicator Light aka: "check engine"). DTC P2510 is a Type A DTC. Aug 4, 2022 ยท P0183 Fuel temp sensor check engine light. Chevy/GMC Duramax. 6L Dmax LML w/Allison. Nov 13, 2012 ยท I don't know how cold you are, but I never had this issue with my LMM, or LML. It was part of the problem, however it still sets the code and coolant is disappearing. There is now a line under the gear selector and I am also able to drive it now. Nov 5, 2021 ยท IAT-2 is located on the elbow out of the filter air box just before the flex hose. This message will clear if I turn the truck off for a while and let it sit. When the DTC sets, the ECM will turn on the charge indicator in the instrument panel cluster (IPC). P0182 or P0187. Unplug both the engine control module (ECM) connectors for 90 seconds. Old Trucks: 2010 Chevy 3500HD 567,000 When Traded. Truck runs great and I just can't figure out what the deal is. There isn't any water in the oil, and I have not noticed it smoking. If 2K ohms then fuel temp be around 68 degrees F. 2008 Chevy D-max 2500HD 305,000 miles when traded. A cylinder is a key component in this case. Apr 22, 2013 ยท 5305 posts ยท Joined 2012. If that doesn't work, the EGR system may need some attention. If the engine has sat overnight, the IAT sensor 2 and the ECT sensor values should display within 15ยฐC (27ยฐF). Nov 7, 2022 ยท The Duramax L5P was introduced in 2017 as a replacement for the LML. 8K views 1 year ago. This diagnostic test runs twice a drive cycle. 47K views 7 replies 6 participants last post by rebpdt Dec 15, 2011. 1 post ยท Joined 2018. com DURAMAX Diesel Engine (LML/LGH) - 2011 Black plate (32,1) 9-32 Driving and Operating Running Out of Fuel 3. Conditions for Clearing the DTC. LML is much better. Hello all. Feb 10, 2018 ยท 11 LML P140A code and delete questions. Turn the ignition key to START The check engine light may come for 10 to 15 seconds at a time on if the vehicle has run out of fuel. In this mode, when everything is warmed up, the ECM begins to use the oxygen sensor(s) for fuel control. Here are a few of the most well-known: Uses a lot of fuel; Temperatures are falling quickly. He said the PNS switch appeared to be working fine from the diagnostics he could run. Feb 25, 2014 ยท Ive had the tuning for maybe about a month. , risk of damaging engine) to do so? Thanks. #3 ยท Dec 23, 2016. Mar 1, 2014 ยท Blue06Sierra. BONE STOCK. Had them cleared and gone for a couple days, now both the Mar 11, 2020 ยท Get in the truck to run a quick errand tonight, start it up and CEL comes up for P0103 also displaying "reduced engine power" and "MAF g/s" kick back to 600. Gauge shows normal around 185 degf and looks like normal heat up. Oil pressure shows 0 psi with fault code p0522. P0284 is described as a cylinder number 8 contribution/balance. Example if you see 584 ohms then the fuel temp should be 140 degrees F. Aug 8, 2016 ยท LBZ - P0128 - Thermostat or ECT sensor ? Getting P0128. I've randomly gotten a P16A8 check engine light on my truck about three times now. Aug 10, 2011 ยท Dirtygerman. The guy at Strictly Diesel in Arizona is telling the dealer that I am buying it from that this has happened only 3 times before. Jun 8, 2013 ยท Cayenne Discussion starter. Conditions for Setting the DTC. Any issues with your. If your Duramax engine has a P01F0 code, it means the engine coolant temperature is below the average diagnostic monitoring heat. OK guys since I am new to diesels and Duramax I have a question. I just subscribed to โ€˜alldatadiy. 11-16 LML Duramax Powertrain P0278 and P0281. Today, it came back on. The little that I can find about it is that it's a EGR cooler bypass valve problem. 6-liter LML Duramax V-8 engine is the capstone of GMโ€™s Pre-L5P turbodiesels. The engine did not meet the ECT target temperatures of 50ยฐC (120ยฐF) low region or 72ยฐC (162ยฐF) high region during expected calibrated warm-up times and start-up temperatures. With the ignition on use the Tech2 and clear all codes in the ECM. 6L: Code P01F0: coolant temp dropped below diagnostic monitoring temperature. I was looking up the thermostat Dec 27, 2013 ยท During the key ON test, if the ECM detects a high generator turn on signal circuit voltage, DTC P0621 will set. I know the voltage is supposed to go up on the signal wire when oil pressure goes up but that isnโ€™t Page 58: Running Out Of Fuel. High reached was 176. I have been dealing with this code for some time. To the COLD FILL mark on the van. P0128, temps ~160s, safe to drive. Iโ€™m just getting started but they have a lot of info if you dig. Circuit/System Verification. No overheat, (180-185 on a 90 degree day) coolant leaks happening or other issues. I understand it is either the thermostats or the temperature sensor. With Edge Insight monitor. Now we need to loosen the black coolant pipe so we have some play in it. #2 ยท Mar 10, 2022. #1 ยท Sep 4, 2012. 2015 Silverado 2500 crew cab single rear wheel LML. We Installed a new ECM and it's been about a month of no problems, now it just threw a p268a code and it keeps coming back. This code indicates that the intake air temperature sensor and fuel temperature sensor disagree with each other by more than 180 degrees F at start up. OR. My 2015 duramax came up with codes P128E and P0087 and went into reduced power mode and displayed change fuel filter. #3 ยท Jul 31, 2020. No Operational issues. comโ€™ yesterday, $29. . Sep 8, 2020 ยท The P0128 is pointing to a problem with the ECT seeing a lower engine temp than what it is expecting to see at the given operation time. 52. 00. Jun 3, 2011 ยท Or it can throw the code if sensor is shorted to voltage. Nov 4, 2015 ยท DTC P0128 will only run once per ignition cycle until a Pass, Fail or Disable condition exists. Whenever it comes up, I just clear it and it goes away. It has an aftemarket cat and exhaust, and an AFE air intake, and an EGR block off plate. Mar 14, 2019 ยท P0128 code. Please discard PIP5198. Sure you already know this, Code: P0128. May 26, 2022 ยท May 26, 2022 by Syed Ahmed. Fill the coolant surge tank to the following levels: At or above the MIN mark on the pickup. Modules: ECM, PCM. Engine Coolant Temperature (ECT) Below Thermostat Temperature. my LLY would start up sitting overnight at -40F w/o the block heater and fire right up. 95/yr. Mar 14, 2022 ยท The wiring harness is chaffing on the air conditioning lines. Nov 25, 2013 ยท P0128. DTC P0621 will also set if, during the RUN test, the ECM detects a low generator turn on signal circuit. High fuel pressure P0088 was displayed and misfire on the cylinders then it died unable to restart. Has done this 2 days in a row. I have been told by a couple of Diesel mechanics when I bought the truck that at 230000 miles I need to keep an eye on my water pump. Took it into a dealer in the town I am visiting. Need some advise/info on my 2016 LML. Never had my lmm higher than 205* so I can't say what happens after that. 5. If you haven't done any repairs, I would suggest to start by checking the starting and charging system on the Yukon. Join. Save $40 on your order of $500 or more*! Use Code LUCKY40. I have an 07 LBZ gmc sierra classic body style. 244 posts ยท Joined 2010. 27K subscribers. There are many things that can trigger the P0087 code. I have consulted a buddy who was a diesel tech for GM and he Mar 18, 2017 ยท Code 0495 (engine cooling fan speed too high). If you donโ€™t ever start pumping fuel the pump/housing is probably sucking air. They had it. Remove the turbo noise suppressor bracket and the wires held to it. Mar 8, 2022 ยท 10386 posts ยท Joined 2009. Letโ€™s discuss the causes for the p128e duramax code and their solutions in detail. Oct 29, 2015 ยท 109 posts ยท Joined 2014. This coolant isnโ€™t getting warm enough, which is causing massive problems. I also seem to be getting pretty bad fuel economy. Circuit/System Description. 2007 Chevy Silverado 3500 HD Classic6. Dec 23, 2016 ยท 1498 posts ยท Joined 2004. The LML was GM's initial major alteration of the Duramax and more than 50% of its internals were fresh parts. Since I've had its been randomly blowing white smoke when I accelerate fast. Jun 13, 2016 ยท Duramax Third Generation: 2006-2007. 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. --- Arizona Diesel Club ---. Turn the IGNITION OFF for 90 seconds. May 13, 2017 ยท #1 ยท May 13, 2017. Here are some vital facts about the iconic truck engine. Jun 7, 2018 ยท 2016 blows white smoke randomly. 5 GMC. DTCs P0117 and P0118 are Type A DTCs. Bakers 2011 LML Build. Pulled a p0091 code which is "fuel pressure regulator 1 low voltage". Apr 9, 2020. *See website for brand and product exclusions. Dirty fuel lines and fuel tank. Subscribe. #1 ยท Oct 29, 2015. If was shorted to ground it would throw code P0182 or that is thrown then fuel temp is over 248 degrees F. 5 Misfire P0303- Cyl. 6 L Duramax This should be a similar fix on any year Duramax. Be sure the pressure cap is hand-tight and fully seated. Condition/Concern Some customers may comment on any of the following conditions: Aug 30, 2017 ยท Usually these codes set as a result of an electrical issue, usually a battery problem. Ensure your 2011-2016 Chevy/GMC 6. Its design is centered around exhaust gas temperatures, providing unparalleled efficiency and thermal dynamics. And the gauge doesn't move til your over 210*. After checking basics (air filter, fuses, changing tunes), finally pulled a code only readable via efilive v2. Then a month or so later it happens again check engine light goes on and def . 6. Replaced tank under warranty. Replace the thermostats and it will go away for good. #1 ยท Dec 31, 2018. . Apr 5, 2019 ยท DTC P0128 will only run once per ignition cycle until a Pass, Fail or Disable condition exists. After 90 seconds has passed, re-install the ECM connectors. So I bought a gmc duramax with 20000 miles on it about 8 months ago. 2011 CCSB 4x4 LML - 65,xxx miles. The cycle repeats maybe 50 miles later. Equipped with 6. Not quite sure what could be causing it. maybe some help here P22a1 Chevrolet Code - NOx Sensor 2 Circuit High Voltage Bank 2. The truck still is throwing a P0402 code. Just let the glow plug cycle twice and hit the starter. I am dealing with the same issue but on a 2010 LMM, With mechanical oil pressure gauge hooked up pressure is within spec. 6 Misfire P0305- Cyl. Try cleaning your MAF sensor (in the intake tube from the air cleaner) with MAF Sensor cleaner ONLY. xm he mh yy ms tv od qm yt lv