P0420 15 duramax. 11-16 LML Duramax Powertrain.
- P0420 15 duramax Planning to swap out the 9th injector this weekend. BONE STOCK. I’m not in a state with emission check. Went back to red Line 15-40 synthetic. 11-16 LML Duramax Powertrain 2015 LML p0420 update new issues in last reply on this thread. You need to regen your truck, or rather have someone get The diesel exhaust system on 2017-2018 Silverado and Sierra models and 2019-2020 Silverado 2500/3500 and Sierra 2500/3500 models equipped with the 6. experience as repair shop manager and technician. Code recurs within 1 hour. 5 Silverado 2500HD LTZ CCSB LMM Duramax - Triple Black (SOLD) 2008 Silverado 1500 LT 5. Repair and Prevention Strategies. I don't have any info on the P057c but I have attached P0420. Jump to Latest And question 2: being as it's not a hard code yet and I only work about 15 miles from home can I continue using the truck until the dealer gets me in or untill it goes into limp mode? Will the dealer try charging me for Customer: Just talked to you about my 13’ duramax and a P0420 code after filling up at a gas station Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Customer: No the code is P0420 Mechanic's Assistant: What is the model/year of your Chevy? Customer: 2013 Chevrolet Silverado 2500HD 6. Jump to Latest 12K views DTC P0420 Diagnostic Instructions •Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic System Check - Vehicle) prior to using this diagnostic P0420. Cattleman HD front bumper replacement. It indicates that the exhaust system’s oxygen levels are below the required threshold in Bank 1, which can damage the engine’s exhaust and fuel system. Engine has around 175k miles and is completely stock. 20+ yrs. The last two I repaired by doing a regen. I drove 180 miles and when pulling off of the interstate, the Customer states check engine light on with P0420 code. Codes p0420, p0430 and p0497 Gm 6. How to fix obd code p0420 on a buick envisionP0420 chevy code gmc buick chevrolet Dodge charger p0420 codeMore p0420 code issues How to fix the p0128 code on duramax (expert strategies)How to fix chevrolet p0420 engine code in 3 minutes [3 methods / only. These processes comprise mending any wires with chaffing damage and tie strapping them safely far away from the air conditioning lines. First problem with the truck. Engine light came on and is showing P0420. then stops. Incorrect programming or module failure can trigger the P20EE code, affecting the overall performance of your Duramax engine. Can a P0420 Chevrolet trouble code be triggered by a faulty oxygen sensor? - Yes, a malfunctioning oxygen sensor can cause the engine to run rich or lean, which may lead to the triggering of the P0420 code. About 2 weeks ago it throws a P0420 code. It will eventually pop a p0420 code for catalyst performance. I just made it disappear. 6 posts · Joined 2022 Add to quote; Only show this user #1 · Mar 26, 2023. 6 LML DURAMAX (Stock, no mods). Thank you again for the responses. 2020+ LM2 Duramax Powertrain Bad Catalytic Converter at 350 miles dtc code p0420 - bad cat dtc code p0621 - bad generator 1 Update. Picture a little fuzzy. Just started tossing a P0420 code. There was certaintly more things to diagnose with the P0420 code, but the dealerships diagnostic tool was way more real time than my cheap harbor freight code reader. Vehicle: 2013 Chevy Silverado Duramax 6. com was founded in 2006 and created a site which houses some of the best known Chevy / GMC Duramax 11-16 LML Forums. Got a P0420 “Catalyst System Efficiency Below Threshold” engine code? Don’t sweat it! In this simple DIY guide, I'll show you an affordable, $15 fix that tak Chevy / GMC Duramax 11-16 LML Forums. 11. Action Taken When the DTC Sets DTC P0420 is a type B DTC. I have also seen the 9th injector cause the p0420 and the faulty 9th injector wont let it regen. Some 2015-2018 Silverado and Sierra models and 2019 Silverado 2500/3500 and Sierra 2500/3500 models equipped with the 6. Had 120,000 miles on it with P0420 code. Ive yet to find out what the end P means, but I was able to look up what the 0420 read. Texas Diesel Company has the factory GM computer in-house! This allows us to quickly and effectively diagnose In some cases, driving with a faulty catalytic converter can damage other parts of the engine. With Edge Insight monitor. Code “P0420” - Catalyst System Efficiency below Threshold Bank 1. Another potential culprit is faulty oxygen sensors. well just received code p0420 for the second time. #11 · Oct 15 Love my Duramax but this may be the last diesel for me. Could a bad fuel cap cause Get the fuel line disconnect tool, I used a pen tube that I cut but even with it right in front of my it wasn’t easy, the right tool would have been better. 8M posts 217K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. LML - P0420, P2463, P24A0; LML - P0420, P2463, P24A0. Are you looking for the Duramax exhaust gas temperature (EGT) sensor? Our guide can show you how to quickly and easily locate it, inspect it, and clean it. 2020 GMC Sierra SLT 3500 CC/SB L5P 3/14/20 Payload 3726lbs. It is caused by a faulty Exhaust Gas Temperature Sensor, an open or shorted Exhaust Gas Temperature Sensor harness, or a faulty Exhaust Particulate Filter. 3 KB Views: 26. 5-2005 (LLY) 6. Replacing NOX #2 sensor - 2013 Duramax. How to Test Your Catalytic Converter in 15 minutes (YouTube) Conclusion. I did clear these codes and still no luck. Full Forum Listing DTC P0420 runs once per driving cycle when the above conditions are met. Former Trucks:2019 GMC Sierra Denali Duramax 2500, loaded. and agreed to do the 9th injector under warranty. Ive been seeing that the 9th injector could be 6. Save Share Reply Quote Like. 31. heymccall. 35,533 Satisfied Customers. Had 120,000 miles on it P0420 Engine Code For Duramax Diesel. Jump to Latest 1. recently my P0420 engine code for duramax diesel. The use of Off Road Red Dye Fuel or continuing use of non ultra low sulfur fuel may be a possible contributor to this DOC failure. O2 1 and o2 2 are relatively the same most of the time. I had the very same P0420 codedealer was adamant that the cat was badI insisted the 9th injector was bad. Full Forum Listing. 294 posts · Joined 2020 Add to quote; Only show this user #5 Chevy and GMC Duramax Diesel Forum. C. The Tech 2 cannot at this time energize the HCI directly to cause fuel to spray, so a coil test tool is needed (J 39021). 3 2016 Chevy Tahoe 5. The fuel supply line locks into the injector, which I have the special tool to release it. 6k points) Hi there, This code means the I have a 2015 Chevy Duramax with about 64K miles. Jump to Latest 450 Hello I need some advice on my 2015 sierra 2500 diesel . The aftertreatment injector needed replaced. Full Forum 2016 Chevy Silverado High Country 3500 Duramax LML, Banks Idash, Airdog 4G with BD performance fuel heater, Oil Bypass system. No previous issues 110,000 miles. Ignition OFF and all vehicle systems OFF. B&W turnover ball. Oct 26, 2016 #5 WVRigrat05 said: Duramaxdiesels. The control module itself can sometimes be the root of the problem. If Toyota would ever invest a couple bucks on fuel economy improvement, I would own a Tundra. After reading the code criteria and a little research I began my diagnostics checking the hydrocarbon fuel injector. . IF the injector is clogged it will just dribble out and not spray. Fast forward, check engine light came on, same Based on stored freeze frame data analysis I felt that I knew what I’d find wrong with this vehicle before I left themore. 5 DENALI LML | 6" FabTech | Deleted 2015 GMC Sierra SLE 4x4 Duramax doublecab. 11-16 LML Duramax Powertrain P0420 code thrown. so I bought The P0420 code for GMC vehicles indicates that the catalyst system on Bank 1 is operating at a lower efficiency than expected. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles 2013 CrewCab and chassis with 9' Hillsboro aluminum flatbed 84,000 miles. 2018. Just got it back running 3-4 days ago after using a disaster kit with a CP3 swap and FASS installation. HighTop. I dont mind wrenching but after some digging it looks as though it may be covered under some type of federal emissions regulations / warranty (under 8 years / 60k)? Chevy and GMC Duramax Diesel Forum. The catalyst within the converter P0420 and P0420P. 2016 GMC Sierra Denali Duramax Z71. 00Getting rid of code p0420 with a little spring cleaning. 6L Duramax diesel engine (RPOs LML, L5P) and dual fuel tanks (23. Jun 15, 2015 990 0 16 Cloud 9, IDAHO. Alright, I'm back again but with a new code this time. JOHN aka Eauto. 2L Diesel Engine Suspension & Steering - I theory, 5-40 and 15-40 should be the same viscosity at operating temps. Could a bad fuel cap cause this code somehow? Tried to order a new fuel cap and everyone is saying it has been discontinued. So I just replaced the motor plastic gear and put the new cover on. when I perform all resets and try to command a service regen it starts for about 10-15 sec. 6 Duramax Diesel Engine (RPO codes LML and LGH) This PI was superseded to remove pictures. Can a bad O2 sensor cause a P0420 code? Yes. Mechanic's Assistant: What is the model of your '15 Chevy? Customer: 2015 Sierra HD slt 2500 duramax Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? Customer: Nothing. The ECM determines that the DOC functionality has degraded below a calibrated threshold, during a regeneration P0420 - Researched to death **Solved** Earlier this year, 20 miles before I clicked off 120k on my truck I popped a code for the DEF heater. its an ambulance has 62758 on the clock Chevy / GMC Duramax 11-16 LML Forums. After driving around a couple of days while waiting to schedule a service appointment, the light went out. (Fig. 2015 Buick Encore - Autos. 0. In this video, you'll learn the causes and solutions of the P0420 code. Wiring problems, faulty reductant tank sensors, and I just purchased this 2019 Chevy Duramax 6. "A 3-way catalyst controls emissions of hydrocarbons, carbon monoxide (CO), and oxides of nitrogen (NOX). Has anyone had this code what is the fix. Chevy / GMC Duramax 11-16 LML Forums. it will drive fine for about 15 min or so then power down. Conditions for Clearing the DTC How common is P0420? P0420 is the most common OBD2 code. Based on stored freeze frame data analysis I felt that I knew what I’d Customer states Service emission system with check engine light and P0420 code stored. My 16 is throwing a p0420 just wondering who has had this and what was the problem. So far it has been everything i have ever wanted from a truck. Jump to Latest 6K views I have the following codes on my 2015 GMC Duramax LML,,,P0420. Did some research and followed some forums of course and after getting Trouble Code p0420 determined that my 9th injector is failing. I have a 2013 Duramax and I have a P0420 code. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Accurately diagnosed in minutes with a little bit of system knowledge and logical analysis of data. Jump to Latest 1K views Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . For the second time the dealer replaced the DEF tank and heater. P0420: Catalyst System Efficiency Below Threshold Bank 1 and they did not show up on the long trip to Colorado. 6L Dmax LML w/Allison. 13BlueGranite Discussion starter 128 posts 15 Buick Encore P0420 07 May 2024. Took it back to the selling dealer who got the same code and ordered a replacement catalytic converter, which arrived 3 days later. Jump to Latest 15K views 25 replies #15 · Jun 8, 2021. unable to finish re-generation. Jump to Latest 24K views After driving it around for about 15 miles or so the check engine light came back on. 0 like . Conditions for Clearing the DTC I've got a 2015 duramax with the exhaust quality warning and limp mode pending, now only 50 miles away (4 mph). just stopped by the dealership and Bradley Jordan ASE,Nissan certified technician Checked my insight and had code p0420 showing without CEL on. Page 2 October, 2019 Bulletin No. This time it said the def quality is poor and went back in to limp mode. Joined Nov 20, 2020 · 28 Posts #41 · Sep 30, 2021 After clearing the codes the light went out but the p0420 remained. 6 duramax turbo diesel with a catalyst code p0420. When not in regen , nbr 1 egt is the highest. answered Oct 27, 2018 by Carguy1 (13. 2L Diesel Engine Suspension & Steering - Customer: Just talked to you about my 13’ duramax and a P0420 code after filling up at a gas station Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Customer: No the code is P0420 Mechanic's Assistant: What is the model/year of your Chevy? Customer: 2013 Chevrolet Silverado 2500HD 6. I just can't get past the 15 MPG the Toyota V8s seem to struggle with Sorry about your troubles. DEMOCRAT, LBGTQ, FEMINISTS, ECO WARRIORS, etc. 5 gallon/89 liter front tank and 40 gallon/151 liter rear tank) (RPO N2N) may have poor fuel transfer or the rear fuel tank may have collapsed. Yes, another P042, 2015 Silverado 2500HD 110k + miles. =====Claim your FREE engine code eraser 👉 https://free. The current temperature where I am is 15 deg w/ a wind chill of 2 deg. P0420 code help. Chevy / GMC Duramax 2017+ L5P Forums. They did the work, I drove home and the next morning, you guessed it, CEL - P0420. Message went away after a few miles but came back 100 miles later. Action Taken When the DTC Sets DTC P0420 is a Type B DTC. Come join the The meaning of diagnostic trouble code (DTC) P0420: Catalyst System Efficiency Below Threshold (Bank 1) may sound complex. S&B Dry CAI. However, there are many reasons and factors which are responsible for demonstrating this trouble code on the vehicles. I suspected it wasn't the fuel itself, but rather with the stopping and starting. Back to the dealer @ 3600mi with cel and code P20ee. 2 mpg @ 70-75 mph. Was good for about 300 miles and is back with the same issue. mp06011999 255 Replies. Cobra Customer: 2014 Duramax p0420 check engine light on Mechanic's Assistant: Does the light stay on, or does it blink? Customer: stay on Mechanic's Assistant: What is the model of your '14 Chevy? Customer: 2014 chevy Silverado 2500 ltz Mechanic's Assistant: Are you fixing your Silverado yourself? What have you tried so far? Customer: Im thinkin fixit by my self . 2L Diesel Engine Suspension & Steering - 2001 - 2010. 6. It sat for three months while I drove truck over the road for another company. Clear the DTCs. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Tags ecodiesel p0420 ram1500 ecodiesel. I haven't been able to go on a long trip lately so its been stop and go while this is happening. Just 2002 Duramax 2014 Cruze Diesel P0420 is also a gas engine code, good question how this relates to a diesel without the shop manual to explain it. 2000 Express 15 Pass. 6 liter 2500HD four months ago. 6L, 2500 Silverado, Crew Cab I have a 2016 here that has me somewhat stumped. The specific diagnosis time and labor rates at auto repair shops can vary based on factors such as It covers the P0420 code's meaning, symptoms, causes, and possible solutions. Looks like bank 1 NOx sensor fault. P0420 is the most common OBDII code and is virtually never a breakdown risk. In this article, we will be covering everything you need to know Also Read: P0087 Duramax Fixing with Reasons Explained. by Brian2500HDLTZ. So they replaced that and said my P0420 was due to an Customer: I have a 2013 Duramax and I have a P0420 code. after repair and test drive the truc 4 Hours after getting it home it threw a CEL, scanned and was P0420, Catalyst System Efficiency Below Threshold (Bank 1). I had the same message on a trip towing 10,000 pounds with a Just talked to you about my 13’ duramax and a P0420 code after filling up at a gas station. Note: A service regeneration will not run if DTC P0420 is set, only an on road driving regeneration. Dealer replaced, all was good, until Regardless, P0420 is related to HC (hydrocarbon (diesel)) conversion rate not a DEF problem. So I purchased the biscan app for torque. Took it to dealer and they said nothing was wrong. I know its catalyst threshold on bank #1. Should be almost exactly 5V. asked Jul 15, 2018 by anonymous. So, are you looking for a solution to this problem? Well, you are in the right place to do so. So i replaced the 9th injector. Def tank system code not going away. Read somewhere on a duramax forum that another LBZ owner isolated the "problem" to starting the truck with the a. What Does the P0420 Code Mean? Diagnostic trouble code (DTC) P0420 stands for “P0420 Catalyst System Efficiency Below Threshold (Bank 1). this car has been a pain in the. I can only guess that the P0420 wants me to change O2 sensors or Catalytic Converter. The ECM determines that the DOC functionality has degraded below a calibrated threshold, during a regeneration event. From the gas shop manual. Jump to Latest It's goes into regen every 400 miles or so and have had the P0420 code come on twice. Thinking of buying a 96 chev 3/4 ton deisel auto. 8M posts 219K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Duramax 6. As any vehicle ages, the likelihood of a P0420 code becomes more and more likely. They diagnosed with “ Nox sensor, false reading” reflashed the ECU and cleared the code. 2013 Chevy Duramax 6. 17755 posts That's assuming that you typo'd and meant P0420. pdf. Dealership just keeps forcing Regen and clearing codes! Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with Chevy. Now I am using it as a hotshot set up and have only been driving it a month, just truck for now without my trailer, (oilfield). The catalyst system is responsible for converting I just hit 75k miles on my 2015 LML and just received a P0420 code. Truck tows regularly. If im reading it right, its pointing toward maybe a bad 02 sensor on bank 1. Both times I was pulling a trailer on the highway up and down grades. Jan 20, 2022 11 0 1 Las Vegas. 8M posts 220K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Now it’s throwing P0420 catalyst system low efficiency and P24A0 regen low temp. Is there anything i should look out for? 2014 lml p0420 code. 0. Got a code p0420 and everytime I start the truck it says cleaning exhaust filter keep driving. 3. glenlloyd 101 Replies. Sort by Oldest first Oldest first Newest first Most reactions. ase tech. Looked online for the code and found EGR cooler bypass position sensor exceeded learning limit. If EGT sensor 1, before the DPF, is slow to respond to exhaust gas temperature changes, or sticks in range, Typically this code sets for a failed indirect fuel injector. Conditions for Setting the DTC The ECM determines that the DOC functionality has degraded below a calibrated threshold, during a regeneration event. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting P0420 should not put you in reduced power mode. 234 Satisfied Customers. See attached for pin ID and wiring diagram. Still, it basically means that your car’s catalytic converter isn’t removing enough pollutants from the exhaust gases (its sole purpose). Determine if the temperature difference between EGT Sensor 1 and 2 is within 100°C (180° F). In reality it usually doesn't work that way. It due to code that reset P0420 and P2463. Hey guys, I have a 2015 Silverado 2500hd 4x4 with the Duramax of course! Completely stock truck, about to hit 111k miles. I reset it per dealer instructions. off, and no more code! To test theory I started truck with a. ca. Snugtop truck cap with keyless entry, Edge Insight CTS II, custom rear back up camera for my boat trailer with quick disconnects. To diagnose the B2615 Chevrolet code, it typically requires 1. I noticed last weekend for a split second a message popped up for "Service Emissions System" I was towing our 5th wheel at the time, in tow/haul mode and with exhaust brake engaged. Everyone was pointing me to EGR replacement. 2014 lml p0420 code. Firestone Ride Rite air bags with Air Lift in cab compressor, gauge, and controls. Codigo de avaria p0420 da hyundai Introducir 50+ imagen honda accord code p0420 P0420 engine code for duramax diesel. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. I have a 2011 Chevy Silverado Duramax 2013 LML - P0420 and P205B Thread starter paint94979; Start date Nov 23, 2022; Forums. I tightened the fuel cap and reset the code and it was fine for over a “I had a resolution within 15 I have a 2014 Duramax with only 58,000 miles and have 2 codes that just came up P057C Brake Pedal Poistion Sensor Circuit Low Voltage and code P0420 Catalyst Sydtem Low Efficiency. #8 · Feb 15, 2020. A Duramax showing the code p2463 is determining a mass of soot blocking in the DPF filter. Dealer #2: One day later after same code and solid CEL. Here is my question. Called dealer and checked online for possibilities. Explore Our Forums. Took it to the dealership under the Special Coverage to replace the Indirect Fuel Injector. Conditions for Setting the DTC. My 2014 3500 with 75k just threw this code. Both times it happened, it was not possible for me to floor it/burn it out. 7K views 9 replies 8 participants last post by amcockriel Nov 21, 2024. 15' GMC 2500 popped P0420 shortly after buying 2014 GMC Duramax with 33,000 miles. What is wrong with my truck? Ihave taken to 3 dealerships and they can not answer. Los1wing; Nov 19, 2019; 2. It threw the code P0191 Fuel Rail Pressure and went into limp How to diagnose and fix U0121 code: lost communication with ABS module on Chevy. “I had a resolution within 15 minutes” The vehicle is a 2016 GMC 2500 HD with the 6. They show as permanent codes on my scan - Answered by a verified GMC Mechanic #1 · Oct 15, 2024 (Edited) So, my 2015 LML is throwing the infamous P0420 code. The causes of the P0420 code are a bad catalytic converter, an ECM update, an exhaust #15 · Sep 1, 2014. I also noticed that the STFT was N/A for bank 1 and 99% for bank 2. The P205B code in your Duramax indicates a problem with the temperature sensors in the reductant tank. 6 Technical. Hope this video helps anyone with the a 9th injector problem on a LML Duramax Duramax Fifth Generation: 2011-2016 (LML) B2AAA code (actually P0420) Jump to Latest Unfortunately that code means nothing. There is an extended warranty on the 9th fuel injector (at least for 2013 LML's). charlie2 Discussion starter. Full Forum Listing The meaning of diagnostic trouble code (DTC) P0420: Catalyst System Efficiency Below Threshold (Bank 1) may sound complex. As wiilydmax indicated, there is likely some problem with the 9th injector (regen Observe the scan tool Freeze Frame/Failure Records data for DTC P0420. After awhile, I Customer: 2013 LML Duramax. 80 gallon ATTA tank. when the Trailer Brake Controller started throwing a tantrum. 6L Duramax (LML), and 116,000 miles on it. P0420. Jump to Latest 38K views My codes were P16A8 and P0420 I'm being told they are both related to the intake heater. Close. X. This morning the CEL came on and I got the 'CLEANING EXHAUST FILTER/DRIVE UNTIL MESSAGE GOES AWAY(?). ADMIN MOD P0420 code ? 2013 lml any idea what the deal is I know it’s emissions related any help would be appreciated Share I just had this issue with my 15. Came one again in about 500 miles. so I a matter of Chevy Duramax P0420 Code: Troubleshooting Catalytic Converter Issues Dec 15, 2010 7,078 2,198 113 Norcal. 4 volts. While on my way to work this time, I got 16. I have noted some sensor readings nox 1 and nox 2 are 284/16 at idle. Conditions for Clearing the DTC 4. so I took it into the dealer and they said it was actually P0420, made appointment for service Tuesday. nonda. Jump to Latest 41 - 43 of 43 Posts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Show Less . I take it in, It had to have the flange on the downpipe replaced due to it leaking diesel during regen. Service emission system message, 93 miles to 65mph in DIC. Remove the inner fender passengers side. 2017-19 GM T-K2 Platform Powertrain Pending p24a0 code and no power. 6 has codes p2463 / p0420 / p2459 is powered down. Clive Mcglivrey; Nov 21, 2024; 1 142 11-16 LML Duramax Powertrain. I'm getting the P0420 code again along with a P24AO code. Thank you. 43 29K 4d ago. 99K posts Hi - bought this 18 a few months ago and shortly after started having this problem. I have read that if the truck doesn't complete a regen cycle it will throw the Subject: Additional Diagnostics For DTC P0420 And Or P24A0 Models: 2010 - 2015 Chevrolet Express 2010 - 2015 GMC Savana 2011 - 2015 Chevrolet Silverado 2011 - 2015 GMC Sierra Equipped with the 6. 3. Dec 15, 2010 7,065 2,195 113 Norcal. Perhaps your IAT wire is broken. Cleared codes, P0420, P2200, P2202. During first regen I turned truck off during and when I restarted it and it continued I had a p0420 ended up stopping at 26g soot. Code. c. Any DTC or condition that increases emissions or affects sensor readings can cause a converter to fail the ECM tests even if the converter is good. 2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All Duramax Fifth Generation: 2011-2016 (LML) Need help with codes p0420. My dad’s 2015 Duramax just threw code P24C4 yesterday. Customer recently had about $5k in parts installed at the local dealership for a P0420 fault code, only" ️ '15 Chevrolet 6. P0420-00 P2463-00 P24A0-00 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Upon inspection, the technician may observe on a scan tool one The P0420 code for GMC vehicles indicates that the catalyst system on Bank 1 is operating at a lower efficiency than expected. P0191, reduced power master race, 2019 3500. Jan 10, 2011 and GMC Savana vehicles and 2011-2015 Chevrolet Silverado HD and GMC Sierra HD vehicles that are equipped with 6. Did a search, and it seems as if the DOC or the hydrocarbon injector is at fault. In some cases, driving with a faulty catalytic converter can damage other parts of the engine. PCM sets the code when detecting an abnormal temperature beyond a particular range. P0420 code. Found the internet! 0. Solution: To solve this 2012 Duramax code p128e issue, you have to follow the manufacturer’s suggested diagnostic and repair processes. Seen a significant drop in oil pressure in my 05 when towing heavy during the summer heat using the 5 weight synthetics. my question is can i replace the sensor and clear the code and be ok, or does somethimg else need to be done? Thank You Mechanic's Assistant: Do you have a scan tool to read the codes? Customer: no, went to auto zone Mechanic's Assistant: What is the model of your '15 B&W turnover ball. From all out performance builds running 8 second ¼ mile territory, to What is the Cost to Diagnose the Code? Labor: 1. so I bought The P24A0 automobile fault code is a common issue that triggers the Engine Light ON or Service Engine Soon Warning Light. Ran forced regen all temps looked good at least 300 degree rise across doc when in regen. Sure enough I have begun starting the truck with the a. Full DTC P0420 runs once during an active regeneration event. These sensors monitor the exhaust gases and relay data to the engine control unit (ECU). CMonclova1 · Registered. Date: July 15, 2023 at 6:40 pm This GMC Terrain is the biggest 2016 Chevy Silverado High Country 3500 Duramax LML, Banks Idash, Airdog 4G with BD performance fuel heater, Oil Bypass system. Most of the time Search within r/Duramax. Pulled around 15 codes. AirLift LoadLifter 7500 XL 2019 Arctic Fox 27-5L Andersen Ultimate II Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . Remote start. I have noticed the fuel cap has felt different the last few fill ups. findthehumorinthings. Top Contributors this Month View All. 11-16 LML Duramax Powertrain 2011 LML P0420 Code. 6L Duramax Diesel engines may contain a leak in the seal between the engine-exhaust down pipe and Chevy / GMC Duramax 11-16 LML Forums. Misc Chevy Duramax Issues; LB7. If it Whenever I get a LML in the shop with a P0420 code it typically needs a new 9th injector. Jump to Latest Follow 885 views 1 reply 2 participants last post by Ron Nielson Jul 17, 2023. This problem often involves the diesel exhaust fluid (DEF) injection or the reductant system in your 15' GMC 2500 Denali with 20" BMF FITE wheels Sold: 06' GMC 2500 Crew Cab Short Bed 3" Drop Shackle, 295/70/18 Nitto's on 18" 951's A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. switch on. As the truck comes up to temp #1 & 2 drop down to about the same 2016 Chevy K3500 6. A P0420 code is typically caused by a problem with the catalytic converter, but it can also be caused by a bad O2 sensor. Conditions for Setting the DTC Driving a Stock 2013 Duramax. I am planning to take it to the dealer, but I have a*****with the truck planned this weekend and don't want to risk doing any damage. 6k views. 6L LML Turbo-Diesel - S&B Cold Air Intake - Airdog II 4G -Fleece CP3 Conversion-S&B 62 gallon fuel tank-Allison® 1000 6 P0420 three times, p220d, u029d, u029e, and p2610. 1 2 3. D. If DTCs P0420, P24A0 and/or P2463 are found, inspect the inlet and outlet of the Diesel Oxidation Catalyst (DOC) for signs of damage (such as melting, powder coming out of the DOCor blockage/debris). If you have a P0420 code, it’s best to get it fixed as soon as possible. They say it’s in a bulletin. 0 hour of labor. 92,508 Satisfied Customers. My dealer is not being very cooperative, essentially Can I pull a fifth wheel with a p0420 error code on a 2015 Sierra HD duramax? 36k. I have a 2016 Chevy with P0420 I have a 2015 Duramax 3/4 ton 4x4 with 182,000 miles. In particular, the engine control module (ECM) or powertrain control module (PCM) detected that I got a CE light last week, code P0420, emissions issue. Under normal driving conditions, the DPF cleaning occurs without any driving involvement. Of ur uncle has a tech 2 of access to one. So I have not updated my profile so I will lead with my pickup is a 2015 Duramax 3500 4wd (I believe its an LML not positive), I started getting the code P01F0 last spring and after driving with the code for a bit I reset the code with a code reader, apparently the weather had warmed up to never trip the code again all summer. Diagnosis and repair and show before and after flow indirect injector 9th fuel DTC P0420 runs once during an active regeneration event. Date: July 15, 2023 at 6:40 pm This GMC Terrain is the biggest Bought a 2021 Chevy Silverado 3500 HD SRW, CC 4x4 with the L5P in April. 2. LBZ - P2563; LML. View community ranking In the Top 5% of largest communities on Reddit. Note that the temperature on sensor 1 was over 500. Jump to Latest 8. Models: 2011-2012 Chevrolet Express, Silverado 2011-2012 GMC Savana, Sierra Equipped with Duramax Diesel Engine RPO LGH or LML Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is illuminated and the Reduced Engine Power message is displayed. Go to Duramax r/Duramax. 6 Mechanic's Assistant: Are you fixing your Locating and Maintaining the Duramax Exhaust Gas Temperature Sensor. #15 · Sep 19, 2023. In particular, the engine control module (ECM) or powertrain control module (PCM) detected that P0420 CATALYST EFFICIENCY BANK ONE" SOFTWARE CONTAINED IN RRT 15-088 IS DESIGNED TO CORRECT THIS CODE SETTING ERRONEOUSLY. 1,307 Satisfied Customers. Then they looked up the cat replacement cost. The use of a bore scope will be needed for visual inspection of the DOC’s upstream (inlet) face. 2015 sierra p0420 code smoke and possible regen problem. pavetim Member. Chevy trax / cruze / buick encore valve cover replacement 2013 chevrolet cruze p0420 check engine code easy cheap fix What causes code p0420 engine light chevrolet, chevy, gmc, buick. I kept reseting check engine light over the course of several months with mileage Also I did scan it and got codes p0300, po301, po302, po304, po305 with is cylinder misfire. Took about 15 min. I have TorquePro and i watched the four EGT sensors Cold they all read OK (within a couple of degrees of each other) Start truck and the #1 and 2 go up to about 655-700 degrees pretty quicky, 3 & 4 are 150ish lower. My ezlynk (no tune yet) says im at 43g of soot. Just fixed a 15 that was having this issue. For Duramax diesel DTCs such as P0420, P24A0, or P2463, the indirect fuel injector should be diagnosed for proper function as described in the Service Information – Indirect Fuel Injector Diagnosis (document I. 294 posts · Joined 2020 Add to quote; Only show this user #5 B&W turnover ball. P244c which is Catalyst Temperature Too Low During Regeneration, p0420 Catalyst System Low Efficiency Bank 1, and then p0673 which is fault in the cylinder #3 glow plug circuit. Code p0420?: code p0420 came on. Dealership wanted $1100 to fix it. Ignition ON. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Eric. Whenever I get a LML in the shop with a P0420 code it typically needs a new 9th injector. Log In Sign Up. 15 Aug 2024; posts; Rahsaan Upton; How to fix the p0128 code on duramax (expert strategies) Chevy cranks but won't start p0192 & p127c fuel rail pressure sensor Lml duramax no start after cp3 conversion open return system failed 2015 chevy silverado duramax 6. In the afternoons when it is hot outside (over 85 degrees usually) the def light, cel (p20e8) and limp warning come on. Fix p0420: mechanic's solutions that worked! iamcarhacker Code p0420?: good evening and thank you in advance. User account menu. Customer states Service emission system with check I have a p0420 code that keeps coming up after a few miles of reseting it . My truck went thru constant regens when the 9th injector starting acting up. “I had a resolution within 15 minutes” Just bought a 15. Truck isn’t tuned but I do have a EDGE monitor so I’m aware when the truck goes into REGEN and I pay attention to exhaust Temps and Grams of soot. If diagnosis leads to the Exhaust Aftertreatment Fuel Injector Diagnosis, document all of your test results. The indirect hydrocarbon Customer: Code p0420 keeps coming up on 2013 Chevrolet duramax. My trouble is with my 2013 Silverado 2500HD 4x4 (56k miles) with the LML Duramax triggering a DTC P0420. I have a p0420 code that keeps coming up after a few miles of reseting it . 6 Duramax code PO420. Has been to one of the most popular diesel shops in town with no resolution, they tried to sell the cu 2011 GMC 3500HD 6. It set a P0420 code which I cleared. 6 DuramaxFault Code P0420. Engine: 3" downpipe, 5" flopro no muffler 7" tip, Kory Willis efi live, lb7 up pipe with complete egr removal, WcFab CP3 Conversion with Exergy sportsman, pcv reroute, resonator delete, s369 single turbo with wcfab kit Chevy / GMC Duramax 11-16 LML Forums. 2013. We strive to keep this the #1 forum for tech and information while continuing the push 47K views 15 replies 13 participants last post by BoiseRob Sep 29, Mine was throwing P0420. Identify which injector part number you have. 6 Duramax. 2017-19 GM T-K2 Platform Powertrain. I have a GMC duramax 2500HD and i have 3 different codes popping up at the same time, i was told it was probably just a fuel cap, and they are 2011 GMC 3500HD 6. Light just went on . If a P0420 is stored, follow the P0420 diagnosis in SI. xxiiiliv New member. 92,554 Satisfied Customers. Easy fix to a stupid computer glitch- I got lucky. The 8-digit injector part number can be found on the My 2013 stock GMC Duramax threw a P140c code. After awhile, I Dude take the truck outta there and just pay the bill. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Chevy / GMC Duramax 11-16 LML Forums. I should have the 9th injector this week. Is it safe to continue driving with a The code p2463 on Duramax is a generic code which is attached to any diesel powered vehicle made after 1996. At 67,347 a Code P0420 Indirect fuel injector failed and replaced '15 Chevy ccsb wt wehrli | motorops | xd | nitto | atta | curt | tork lift | airlift | edge | s&b | Bought 11/21/14 72 mi A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. P2BAD, P20EE. Dpf gets clogged. Jump to Latest Chevy and GMC Duramax Diesel Forum. What are the chances the indirect injector is 2013 Chevey SilveradoHD with 6. Jump to Latest 18K •The ambient air temperature is greater than -15°C (5°F). ECM Reprogram module Update PCM from 68234495AG to 68303617AA and TCM from 68245316AC to AE per RRT 15-088 This is all I have for now, 6. Egts during a regen 550 1100 1000 1000 never any higher. DTC P0420 is a type B DTC. 2017 with P11DC & P22A0. by Nov 15, 2018; 2 15K Dec 7, 2024. Chevy and GMC Duramax Diesel Forum. We’ll also provide tips on how to identify and fix any potential issues with the sensor, so you can keep your engine running in optimum condition. I’ve not seen a case myself of this code coming before one for an EGT sensor if an 2015 chevy silverado 2500 6. every option with the exception of rear seat video. Jan 23, 2022 Duramaxdiesels. 2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All I have another ‘15 LML. 6L started throwing OBDII Codes and it was like the entire truck was experiencing a complete melt down. I am not sure if set 2006 Duramax LBZ Edge Evo 4'' Diamond eye to 6'' tip 16'' ion alloy, 33'' fierce attitudes I stopped by the closest Autozone to make sure it was ok to keep driving and got the P0420 code The truck was running fine, so I continued to GA, took it to a local shop and had them put it on their computer. If EGT 4 is greater than EGT 2 by more than 100°C (180° F), idle engine for 15 min. 5. Also every once in a while I get smoke coming out of the front Chevy / GMC Duramax 11-16 LML Forums. I was reminded of those SCREAMING, LEFT. Po420 code keeps coming on my 2013 duramax, Po420 yes keep erasing code but keeps coming back up, 2500hd, Is the P0420 the only code setting? No other codes along with it? Discover more answers. - Sold Sept 2019 chevor-2010-gmc-2500-maintenance-log. 5 GMC Sierra 2500HD Denali LML Duramax 2007. back with the 420 code . 11-16 LML Duramax Powertrain. We strive to keep this the #1 DTC P0420 runs once during an active regeneration event. 15/9. 6l duramax engine lb7 $4,750. : 18-NA-161 Some technicians may find one or more of the following DTC’s set: • B1325, B124B, B124C, B127B, B127E, C0544, C0710 More P0420 code issues. Can you tell me if there have been any recent repairs or changes made to your 2016 Chevy Silverado Duramax before the P0420 code appeared? “I had a resolution within 15 minutes” Go to Duramax r/Duramax • by dejodyl. co 👈== How to Fix CHEVROLET P0420 ==Engine Code CHEVROLET P0420 Savin #1 · May 15, 2020. Amsoil oil and filter. He hasn't been here since 2015. P0420 code points to possibly O2 sensor or cat converter replacement (for a gasoline engine vehicle), but has anyone had an issue with cat converter on a Duramax? Thanks for the help. Truck runs fine but this code just started 2 weeks ago. 2400107). 6 diesel duramax; p0420; 1 Answer. 8M posts 219K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners Chevy / GMC Duramax 2017+ L5P Forums. Full Forum Listing Equipped with the 6. Regen after was fine. Dash and gauges lit up like a Christmas tree. If you’ve seen the P249D code on your Duramax, you’re likely dealing with issues in your truck's emissions system. #15 · Jul 21, 2015. We strive to keep this the #1 forum for tech and information while Chevy Duramax Issues. Only that code. 131. They found engine ground straps G134 and G132 loose and fried. 0 dislike. I had a similar deal happen on my work truck. One guy also suggested replacing MAF Sensor. 11-16 LML Duramax Powertrain P0234 & P2599 codes. How to fix p0420 engine code with fuel injectors replacementWhat causes code p0420 engine light chevrolet, chevy, gmc, buick Chevy rail pressure sensor fuel start but The vehicle is a 2016 GMC 2500 HD with the 6. 6 p0420 cat codeFuel p0191 pressure rail '15. Engine derated Vin#***** By chatting and providing personal info, you ON A CHEVY K3500 6. If the vehicle is maintained properly and any issue that arises in the fuel control system is addressed in a timely fashion, the likelihood of having a P0420 in your future is slim. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance 2006 ccsb chevy silverado EFI live from tony! Edge Insight for info - Soot free -Banks intercooler, banks hot side pipe, AFE stage 3 intake, -MBRP 3 inch down pipe MBRP 4 inch straight pipe no kitty and no muff -5 inch tip - Titan 52 gallon tank -Air Dog II 165 GPH - ready lift indexed keys - XD tie rods - kryptonite UCA - kryptonite idler pivot - cognito braces - I am just now getting to look at my p0420 code. Now next time it tried to go into regen the egt2 only would cycle up to 540 then drop back to give me the trouble The MAF and IAT sensors are one and the same, although they work on separate circuits. CP4 grenade blew up the fuel system. 3 CCSB AFM Deleted - Olympic White (SOLD) Chevy / GMC Duramax 11-16 LML Forums. When i start driving i see the EGT go up to 700-750 for a few minutes then drops back down to normal operating temp. Jul 27, 2020 #2 DTC P2599 - Turbocharger Boost Control Position Performance - High Position testing procedure: Duramaxdiesels. I've got a Innova 5160RS tool and have been able to command the DPF regen, but so far haven't seen that I can command the reductant fluid quality test. Reset code and took the truck on a drive. The Chevy Mechanic I'm going to connect you with knows all the tricks and shortcuts. Upon investigation, the Service Technician may observe on a scan tool DTC P0420, P24A0 and/or 2014 GMC Duramax with 33,000 miles. 9K views 2 I get the P0420 code during the beginning of a regen. Based on stored freeze frame data analysis I felt that I knew what I’d Customer: 2011 chevy silverado 2500hd duramax lml. The code cleared itself and has not come back on 2012 Chevy Silverado 2500 HD LT, CC/SB, 4x4, 6. 17. If I take off driving regen will be active for about 2-3 minutes Reading P0420 for cat circuit bank 1. 6 Mechanic's Assistant: Are you fixing your A P0420 code typically indicates issues with the catalytic converter’s efficiency. Originally came in with p0420 and p2463. TranSynd. Jump to Latest 869 views 4 So a few weeks ago I got the P0420 code. Chev / GMC Duramax 2020+ LM2 Forums. Causes of P205B Code on Duramax. I also noticed that when the limp warning and def light is on that the alternator goes up to 15. 1) requires an occasional Diesel Particulate Filter (DPF) cleaning. Conditions for Setting the DTC The ECM determines that the efficiency of the diesel oxidation catalyst has degraded below a calibrated threshold. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . I have a GMC duramax 2500HD and i have 3 different codes popping up at the same time, i was told it was probably just a fuel cap, and they are B&W turnover ball. LLY - Water Pump; LLY - P2149; LBZ. This will set a code. r/Duramax. 6 DURAMAX D CODES P0089-P0181-P0543. ,2012 GMC Sierra SLT 2500 HD Crewcab, Duramax, Z-71 (4x4),Bilstein This article will explain what causes the P205B code on Duramax and provide steps for finding and replacing the faulty part. Key on Engine off, see what the voltage is (pin 5). Full Forum Listing I have a 2016 here that has me somewhat stumped. Customer recently had about $5k in parts installed at the local dealership for a P0420 fault code, only | Instagram Customer: 2015 duramax is showing a P11CB code, my understanding its a downstream nox sensor. Correct all other DTCs first and allow the Catalytic Converter monitor The cold/dense air requires more fuel. : 20-NA-098 5595888 1. 6 DURAMAX DPF WONT REGEN CHECK ENGINE CODES, HAVE P0420, P2463, P24A0, DID TEST SENSOR IN AM ALL READ By chatting and providing It ran 15 to 18 minutes the the computer hardware shut it down. 6 Duramax Diesel Engine (RPO codes LML and LGH) The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. The condition exists for greater than 4. It’s like The P0420 code for GMC vehicles indicates that the catalyst system on Bank 1 is operating at a lower efficiency than expected. •DTC P2598 and P2599 run continuously whenever the above conditions are met. 5 lml with 87k, first week i thought I had a cp4 failure, no fuel pressure and died while driving, turns out it was just the fuel filter [already replaced when i bought it] Duramaxdiesels. Apr 22, 2019 #2 Have you tried opening the hood and looking? P. “I had a resolution within 15 minutes” #15 · Oct 31, 2022. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! It is July 7th, 2024 and since June 15, 2024, our 2017 Silverado 2500HD LT 6. CEL code was P0420 and I was able to clear it. Let’s get into it. If there are no codes Dec 15, 2010 7,076 2,198 113 Norcal. 9. Jump to Latest 5K So on my way home from deer camp on Sunday my LML threw a code P0420 and the smoke coming out of the tailpipe was as thick as a pile of burning tires. When I got back, I was using it mainly as a daily commuter (15 min city commute), and saw the codes pretty frequently. Duramax Hard Parts. P0420 . Also they replaced a NOx sensor on the first tank replacement, all under warranty. Cleared codes, no more check engine light but DIC message won’t go away. ”. 6 Duramax Gassers 2019 Chevy Silverado LT 5. be/fA3e6n3drRs#mechanic #s Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . Members Online • No_Ad_8752. This problem often involves the diesel exhaust fluid (DEF) injection or the reductant system in your I have gotten a p0420 code several times on my 2013 LML. Also every once in a while I get smoke coming out of the front passenger side wheel well . Posted by 3 days ago. Code P0420 - Catalyst System Efficiency below Threshold Bank 1. on and immediately threw the p003a code again. I hope you purchased OEM sensors, Duramax engines don't much like aftermarket. P0420 Code. Tags cel codes duramax 2500hd dpf p0420. Than unscrew the 9th injector from the downpipe it's a 22mm wrench or oxygen sensor socket. When I got to areas with ice, I slowed down to an average of 40-45 mph, but got 22 mpg. 6L Duramax diesel engine (RPO L5P) (Fig. 2006 CHEVROLET 2500HD DURAMAX CUSTOM SUSPENSION WITH 40'S (SADDLY SOLD) the codes are, P11CB, P24AO, P0420, does anyone know what this What causes code p0420 engine light chevrolet, chevy, gmc, buick. FUEL PRESSURE ,FUEL TEMPERTURE,INTAKE HEATER,LOCK OF POWER I certified mechanic for 15 years. 2016 with Bad Air Intake Heater. I tightened the fuel cap and reset the code and it was fine for over a month, then the code came back. Can someone tell me this means that I Some customers may comment that the malfunction indicator lamp (MIL) is illuminated. LB7 - P0193; LB7 - White Smoke / Hazing Exhaust; LB7 - P0308; LLY. 2015. 13) So I bought my 2011 Duramax 3500 SRW around 3 months ago with 33,000 miles on it. Replaced the 9th injector, cycled the injector then did a stationary regeneration and it's fixed. I can view all modules / read all live data / perform actuations just need some direction. First to verify the presence of the P0420 and/or P0430 DTCs but to also check for any others that might be recorded in the ECM. I just need to find out why it failed after 42k miles of very light duty work. 5 minutes. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004. One common cause is a failing catalytic converter itself, which can deteriorate over time due to heat and exhaust flow. Brian '13 Hyundai Genesis Coupe handshaker :RockOn: Customer: 2015 chevy g 3500 w 6. DTC P0420 runs once during an active regeneration event. certified mechanic for 15 years. LML We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. It can however be a sign of a failing catalytic converter, but it’s highly unlikely. The catalyst system is responsible for converting harmful gases in the exhaust into less harmful emissions before they are released into the atmosphere. Full video link: https://youtu. 15% tint. Jump to Latest Customer: I keep getting a p0420 on a 2016 duramax Silverado Mechanic's Assistant: Thank you for sharing that information. Performed RRT 15-088 cause: 181904CR Module. P0420 code honda crv sensorGeneral motors duramax turbo diesel engine family guide P0420 ford f150 bank 1. “I had a resolution within 15 minutes” 2006 Duramax LBZ Edge Evo 4'' Diamond eye to 6'' tip 16'' ion alloy, 33'' fierce attitudes I stopped by the closest Autozone to make sure it was ok to keep driving and got the P0420 code The truck was running fine, so I continued to GA, took it to a local shop and had them put it on their computer. on my 2014 duramax 62,000 miles. DPF regeneration is inhibited. If I take off driving regen will be active for about 2-3 minutes 2015 2500 6. The EGTs were 686, 636, 475 By chatting and providing personal info 15 Year as an auto mechanic and technician. Std Box SLT 4WD Z71- Duramax® 6. Is it going to cause future issues if I keep driving it. Please discard PIP5085B. 2015 gmc denali p0420. I’m tempted to remove the ECM from that truck and try it on this one. Background; Stock 2011 dmax with just over 36,000 miles throws p0420 1000 miles from home in the middle of a trip Dealer #1: Performed service regen and advised not covered by warranty as it was beyond the 3 year bumper to bumper warranty. Getting a code p0420. It may take up to 2 minutes for all vehicle systems to power down. Addressing the P20EE code on your Duramax involves both immediate repairs and steps to prevent future occurrences. Save Share 6. P0420 Reduced Engine Power. No the code is P0420. Customer states Service emission system with check engine light and P0420 code stored. 2011 LML with just over 10,000mi. Hot vehicle, stop for 10 or 15 min, then hammering on it to get back on the Page 2 May, 2020 Bulletin No. 2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All 2016 Chevy Silverado 2500HD 6. sxyat slnd sdtmbn cvdi fxdzj mwpqc vnxa prb itme sutec
