P140c code duramax

Where is the downstream NOX sensor located on a 2013 Silverado HD 2500 with the 6.6 Duramax Diesel. getting is repaired by mechanic is obviously very expensive ... My check engine light and codes P140C and P11CB. Chevy 2500hd 2016 6 6 lol code p11cb. Read full answer. Jun 22, 2017 • Cars & Trucks.DTC P0420 runs once during an active regeneration event. Conditions for Setting the DTC. The ECM determines that the DOC functionality has degraded below a calibrated threshold, during a regeneration event. The condition exists for greater than 4.5 minutes. Action Taken When the DTC Sets. DTC P0420 is a type B DTC.Duramax Fifth Generation: 2011-2016 (LML) ? code. Jump to Latest ... P0234, P0299, P0401, P0402, P140B, P140C, P2228, or P2229 are not set. * The DPF Regeneration is not active. * The BARO is between 75-106 kPa ... Refer to Diagnostic Trouble Code (DTC) List - Vehicle See: A L L Diagnostic Trouble Codes ...Try this with the key off and out of ignition: Detach the negative cable from BOTH batteries, wait for 10 minutes, and then reconnect. Your code very well may be gone. If it isn't you will need a code reader/clearing tool. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot ...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...Code: P11CB. Definition: NOx Sensor 1 Performance - Signal High. Description: P11CB or P11CC DTCs P0101, P0234, P0299, P0401, P0402, P140B, P140C, P2228, or P2229 are not set. The DPF Regeneration is not active. The BARO is between 75-106 kPa (11-15 psi). The ambient air temperature is between -7 to +38°C (19-100°F).P133C code check engine light is on. Took truck to dealer and they said problem undetermined, OK to drive till next week when they can look at it. Odd to me that they don't know what the code is but says OK to drive. This same thing happened a few months back while out of town and light went off before I returned and didn't come on till …P21dd is a code that indicates a problem with the engine’s Duramax turbocharger. If you’re experiencing this code, it’s important to find a mechanic who can diagnose and fix the issue. Depending on the severity of the problem, it can cost anywhere from $500 to $5,000 to get your engine running properly again.The exhaust gas temperature sensor 1 is greater than 250°C (482°F). The engine speed is between 700–3,400 RPM. The barometric pressure (BARO) is greater than 74.8 kPa (10.8 psi). The ambient air temperature is greater than −7°C (19.4°F). DTC P0420 runs once per driving cycle when the above conditions are met.If you’re ready to try your hand at coding, you’re in luck, because there is no shortage of online classes and resources available. Read on to discover some of the easiest ways to ...Like. G2GBY. 1062 posts · Joined 2017. #3 · Jan 13, 2019 (Edited) Dealer will have a bulletin on this code P140b and most likely newer than this one. #PIP5565A: Check Engine Light On with DTC P140B (Sep 25, 2018). Exhaust Gas Re-circulation (EGR) Slow Response - Increasing Flow. Passed and Failed, The bulletin suggest 8 steps: Ensure … Engine-Codes.com #1. I checked for DTC's the other day (no check engine light) on my CTS and had a P140A that Edge didn't know what it was and it seems it has to do with the EGR …What is the Cost to Diagnose the Code P11DC? Labor: 1.0. The cost to diagnose the P11DC code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Chevy / GMC Duramax 11-16 LML Forums. 11-16 LML Duramax Powertrain. 2015 - P0400 and P2463 LIMP. Jump to Latest Follow 4K ... Same codes as you posted. P0400 Exhaust Gas Recirculation Flow Malfunction and P2463 Diesel . Save Share.Anyone who has worked in any portion of the medical field has had to learn at least a little bit about CPT codes. These Current Procedural Terminology codes are used to document an...Mar 2, 2020 · DTC P2510. Engine Control Module Relay Circuit. Diagnostic Fault Information. Circuit/System Description. The ignition relay is normally an open relay. The relay armature is held in the open position by spring tension. When the ignition switch is turned to the Run or Start position, current will flow through the relay coil. P140C GMC Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis. Home GMCP140C GMC DTC P140C Make: GMC Code: P140C Definition: Exhaust Gas Recirculation (EGR) Flow Excessive Description:Obviously p205b is reductant tank temperature sensor range/performance. Dealer says they need to order a new tank/pump Assy. Also reflashed with the latest updates. Hopefully I don't start getting frequent regens or something else goofy. 2011 chevy 3500hd cc 4x4 drw ltz loaded with snowplow prep.This video goes over how to replace the EGR valve and EGR cooler on a Chevy Silverado 2500 6.6L.Approximate Time: 7 HoursTools needed: 12mm Socket short and ...Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain P1404 code 2002 lb7. Jump to Latest Follow ... I Have a 2002 chevy 4x4 LB7 completely stock. I was getting a P0101 code took it to the dealer and they check the EGR valve said it was good and cleaned it and put it back on truck.Cranked the truck and threw my scanner on it and pulled 2 codes. P064C and P163C. I can clear them with my EFI Live autocal but they keep coming back. Truck runs like normal only issue is the check engine light as far as I can see. I googled the codes and P163C all I can find is it says bad O2 sensor, I did have the sensor disconnected …Jun 21, 2018 · P0101 MAF sensor performance. P11CB Nox Sensor 1 performance signal high. P140C Exhaust gas recirculation (slow response) The correction for these code is to start with the MAF sensor, A faulty MAF will set a P11CB and P140C.. When it comes to the MAF sensor inspect for a secured MAF air duct in being secured. 0. The video focuses on the basic GMC specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight into prog...My truck got stuck a week ago and about 30 miles after getting pulled out the CEL came on, same p140c code. ... 2012 4x4 CC/SB Duramax. Fold-A-Cover Hard Tonneua. Ultra Goliath chrome Wheels. Husky Mud Guards. GM rear "wheel-well" inner liners. Monroe 2969 steering stabilizer.W. will92104. 317 posts · Joined 2006. #9 · Feb 28, 2017. After I had the EGR valve replaced and took it in and they replaced the NOX 1 sensor. two days later the CEL came back on and they ran tests and found the NOX 2 sensor and the EGR bypass cooler was also shot. It has been at the dealer for two days getting fixed.Try this with the key off and out of ignition: Detach the negative cable from BOTH batteries, wait for 10 minutes, and then reconnect. Your code very well may be gone. If it isn't you will need a code reader/clearing tool. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot ...Discover everything you need to know about Urchin Tracking Module (UTM) codes and how to create UTM tracking URLs on Google Analytics. Trusted by business builders worldwide, the H...Elon Musk suggested during a Twitter Spaces with Ford CEO Jim Farley that Tesla might offer its automotive operating system to others. Elon Musk suggested Thursday during a Twitter...2D barcodes are being used in some interesting ways. Visit HowStuffWorks to learn everything about 2D barcodes. Advertisement In the summer of 1974 at a grocery store in Troy, Ohio...Dec 10, 2021 · 107,494 POSTS. Hi, The code indicates a slow response decreasing flow. Often times this isn't related to the EGR but instead the MAF sensor (mass air flow). Also, a restriction in the air inlet tubes can be an issue as well. Remove the MAF sensor (see pic 1 below) and inspect it for dirt. I would service it and see if that makes a difference. Resolved. Emissions. 2013 Chevrolet Silverado 3500 HD LT 6.6L (8 LML) 6-spd (1000) P11CB. Hi, I have a 2013 Duramax thats throwing a P11CB, pervious shop replaced both inlet and outlet NOx sensors, and DEF heater, light still coming on. brought the truck here, and I checked a few things so far, could not pinpoint the problem, any help will be ...If the voltage is too high, it will set the generic code P040D. The common causes of the P040D code include a damaged or faulty EGR temperature sensor, circuit issues, or a PCM issue. The common symptoms of the P040D code are an illuminated check engine light or engine performance issues.Cranked the truck and threw my scanner on it and pulled 2 codes. P064C and P163C. I can clear them with my EFI Live autocal but they keep coming back. Truck runs like normal only issue is the check engine light as far as I can see. I googled the codes and P163C all I can find is it says bad O2 sensor, I did have the sensor disconnected …Your vehicle's key code is necessary if you need to replace your car keys through a dealership or locksmith. Your vehicle's key code is usually stored in your owner's manual, as lo...Some customers may comment that the MIL is illuminated. Some technicians may find one or more of the following DTCs set in the Engine Control Module (ECM): P0421: Catalyst 1 Low Efficiency. P0422: Catalyst 2 Efficiency Below Threshold Bank 1. P0480: Cooling Fan Speed Output Circuit. P119E: NOx Sensor 2 Signal Circuit Low. Engine-Codes.com Code: P11CC. Definition: NOx Sensor 1 Performance - Signal Low. Description: P11CB or P11CC DTCs P0101, P0234, P0299, P0401, P0402, P140B, P140C, P2228, or P2229 are not set. The DPF Regeneration is not active. The BARO is between 75-106 kPa (11-15 psi). The ambient air temperature is between -7 to +38°C (19-100°F). 6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) 6.2L Diesel Engine Fuel System, Air, Exhaust & Emissions Upgrades Top Contributors this Month View AllP2510 is a generic code. That means the power relay gives an atypical voltage to the ECM/PCM, which is incompatible with the manufacturer’s specification. Breaking down the code, we get something like what is stated below. P = Powertrain, the system of components that propels your car forward.Starting in 2011 the Duramax LML engine featured a much larger EGR and EGR cooler. Cooling the exhaust gas is a crucial piece of emissions equipment working. Colder temperatures mean more air can be compacted into a given area which helps reduce combustion temperatures. 3. Clean tunes mean little to no smoke.• P140C: HO2S Slow Response Rich to Lean Sensor 1 Cause This condition may be caused by ice forming on the TMAP sensor. Information Important: It is recommended to use a …Restore the Power Control Module PCM) Replacing an outdated PCM solves the P2149 code most of the time. Update the PCM software to resolve the code. Sometimes fixing the broken PCM module fixes the P2149 code. Replace the Engine Control Module (ECM) ECM is the computer of a car. Fix or replace the ECM to clear up the P2149 code.Jan 28, 2020 · Engine code P06A3. I keeping getting this P06A3 engine code (P06A3 Sensor Reference Voltage D Circuit Open). That's the only code. The truck is a 2015 (early build) duramax with 126k. It is deleted with kory willis tune and Ez Lynk tuner and blocker plates. The truck has been deleted for over a year with no issues. Juanofakind Discussion starter. 3 posts · Joined 2019. #1 · Jan 2, 2019. Hello guys! I got 2017 3500HD 6.6 and wanted to know if anyone has came across this OBD2 code P133C ?Â. So I noticed the CEL this morning on my way to the store. I did do a 700 mile round trip the day before from So Cal to Phoenix Az.December 24, 2021 VXDIAGSHOP VXDIAG VCX NANO 0. Here’s the tip to solve 2013 LML Duramax emissions light and fault codes P204F and P20E8 problems. The first issues that came up was the CEL with P204F and P20E8 (Pump performance and Reductant Pressure Low) and then the emissions light came on a day or 2 later with the “Service Emissions ...The P245A code I will say is abnormal. The other codes expected, so it may be a good indicator of where we should be focusing. The ECM detects an open circuit condition of the EGR cooler bypass valve control circuit internal to the ECM for greater than 3 s. OR. The ECM detects an over temperature condition of the EGR cooler bypass …Feb 10, 2018 · 11 LML P140A code and delete questions. Hey guys, so I just got the CEL and got code P140A. The little that I can find about it is that it's a EGR cooler bypass valve problem. 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. Where is the downstream NOX sensor located on a 2013 Silverado HD 2500 with the 6.6 Duramax Diesel. getting is repaired by mechanic is obviously very expensive ... My check engine light and codes P140C and P11CB. Chevy 2500hd 2016 6 6 lol code p11cb. Read full answer. Jun 22, 2017 • Cars & Trucks.In the world of online shopping, consumers are always on the lookout for ways to save money. Coupon codes and promo codes are two popular methods that shoppers use to get discounts...P2599&P2263 Engine power reduced. My issue has been going on about a year. All started with all of the DEF codes and the 2599 and 2263. After three trips to the dealer and replacing the tank, heater, injector GM finally fixed the DEF system. On my last trip pulling about 12K 5er and ATV behind the trailer.LAS VEGAS, Oct. 4, 2022 /PRNewswire/ -- If you're reading this, you know companies need to keep up with increasingly stringent regulations like th... LAS VEGAS, Oct. 4, 2022 /PRNew...Save on your password security with Keeper Security promo codes. Get the latest on Keeper Security promo codes, coupons, and May sale on PCWorld. PCWorld’s coupon section is create...May 10, 2021 · Purchased a 2020 Silverado with 3.0 Duramax Dec 2020. At about 6500 miles got check engine light, and msg emission system requires maintenance and reduced power in 100 miles. Mar 2, 2020 · DTC P2510. Engine Control Module Relay Circuit. Diagnostic Fault Information. Circuit/System Description. The ignition relay is normally an open relay. The relay armature is held in the open position by spring tension. When the ignition switch is turned to the Run or Start position, current will flow through the relay coil. Where is the downstream NOX sensor located on a 2013 Silverado HD 2500 with the 6.6 Duramax Diesel. getting is repaired by mechanic is obviously very expensive ... My check engine light and codes P140C and P11CB. Chevy 2500hd 2016 6 6 lol code p11cb. Read full answer. Jun 22, 2017 • Cars & Trucks.Oct 7, 2018 · Oct 9, 2018. #6. FC5452 said: Egr valve is stuck closed, things you can try for the 0400 and 140b code, check your air filter (clean or replace, clean maf) sounds odd but the flow is calculated by air intake flow. Sent from my iPhone using Tapatalk Pro. P0140 P0138 Code Chevy Truck, If you have a P0140 or a P0138 code in your chevy truck this video is for you. I will be showing you a few things you should ch...Try this with the key off and out of ignition: Detach the negative cable from BOTH batteries, wait for 10 minutes, and then reconnect. Your code very well may be gone. If it isn't you will need a code reader/clearing tool. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot ...Aug 30, 2019 · Took a day to replace both itmes and all old codes went away and truck ran great. We are now getting codes P154D and P154B. Any ideas what this could be related to. Checked all connections and wires and seem to be good. Bo signs of corrosion or wear. TIA!!! Like. Sort by Oldest first. Took a day to replace both itmes and all old codes went away and truck ran great. We are now getting codes P154D and P154B. Any ideas what this could be related to. Checked all connections and wires and seem to be good. Bo signs of corrosion or wear. TIA!!! Like. Sort by Oldest first.Aug 11, 2020 · Diesel mechanic. Associates. 298 satisfied customers. 2015 Chevy 2500 HD 2015 Duramax. 85000 miles, P11CB keeps. 85000 miles, P11CB keeps randomly setting, NOx sensor 1 has been replace, EGR valve has been replace, been to dealer multiple time for this … read more. 6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) 6.2L Diesel Engine Fuel System, Air, Exhaust & Emissions Upgrades Top Contributors this Month View AllThe easiest way to tell the exact Duramax model is by the VIN code. The 8th digit in the VIN code will tell you the Duramax model such as LLY or LBZ. Which Duramax engine do I have? First created in 2001, was the Duramax 6.6L Turbo Diesel “LB7” with 300 hp and 520 lb-ft of torque in ¾ and 1-ton trucks. GM then released the LLY halfway ... Engine-Codes.com Oct 4, 2016 · ChristianH1123. CEO/Lead Technician. Associates of Applied Scien... 2,687 satisfied customers. Codes p245a, p140a, and p02e0 - these are in the same area. codes p245a, p140a, and p02e0 - these are in the same area under hood, a common wire or circuit? Duramax … read more. Postal ZIP Codes - ZIP codes are five digit numbers that represent specific locations in the United States. Learn about ZIP codes and find out why ZIP codes were created. Advertise...Modified. Released January 20, 2021. GM bulletins are intended for use by professional technicians, NOTa "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment ...Jun 21, 2018 · P0101 MAF sensor performance. P11CB Nox Sensor 1 performance signal high. P140C Exhaust gas recirculation (slow response) The correction for these code is to start with the MAF sensor, A faulty MAF will set a P11CB and P140C.. When it comes to the MAF sensor inspect for a secured MAF air duct in being secured. 0. Mar 2, 2020 · DTC P2510. Engine Control Module Relay Circuit. Diagnostic Fault Information. Circuit/System Description. The ignition relay is normally an open relay. The relay armature is held in the open position by spring tension. When the ignition switch is turned to the Run or Start position, current will flow through the relay coil. Starting in 2011 the Duramax LML engine featured a much larger EGR and EGR cooler. Cooling the exhaust gas is a crucial piece of emissions equipment working. Colder temperatures mean more air can be compacted into a given area which helps reduce combustion temperatures. 3. Clean tunes mean little to no smoke.All Season Diesel Performance, Your Duramax diesel performance headquarters by Tony Burkhard owner of the Dirty Hooker so thanks, and we'll see what works... 2006 Chevy Silverado 2500HD Crew Cab, 6.6L LBZ, Amsoil Dual Bypass Oil Filter, Banks Ram Air Box, EGR Delete and Intake Heater Delete and finger stick by All Season …Causes for this P040C engine code may include: Defective or damaged EGR (Exhaust Gas Recirculation) temperature sensor. EGR temperature sensor gasket leaking. Cracked or leaking exhaust pipe in which the sensor is mounted. Burnt wiring harness and/or sensor. Damaged wire (s) (open, short to power, short to ground, etc.)Drain Discussion starter. 45 posts · Joined 2007. #1 · Oct 13, 2021. 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 ...Well I fixed my duramax! After replacing the EGR I got that p1404 code, and it turns out the 2 hoses going to the vent valve control solenoid PN: 1997254 were swapped. I found a decent picture and diagram of the EGR routing on the following link: EGR Sensor question LB7 - Page 7 - Diesel Place : Chevrolet and GMC Diesel Truck Forums.Aug 30, 2019 · Took a day to replace both itmes and all old codes went away and truck ran great. We are now getting codes P154D and P154B. Any ideas what this could be related to. Checked all connections and wires and seem to be good. Bo signs of corrosion or wear. TIA!!! Like. Sort by Oldest first. Chevrolet diesel trucks use the 6.6 liter Duramax engine, which is prone to intermittent fuel starvation, water pump failure, overheating, injector failure and injector harness cha...Kennedy Diesel-owner More than just a salesman-I use and test the products that I sell on a daily basis! Superflow Lie Detector in house 2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help 2005 Chev K3500SRW D/A CC Long LT(SOLD) 2007 Chev K2500 Classic EC Short LT (Sold) 2012 GMC K3500SRW …P11cb code. 2013 3500 6.6 duramax 62000 miles - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... Recurring P11CB and P140C codes. The P11CB occurs more often. 83000 miles. Dealer has replace EGR valve and Nox #1 sensor.2015 Chevy 3500HD, 4x4, crew cab, 151768 miles. I keep (over a year) getting trouble code p140c predominantly along with p24c4, ... 1,001 satisfied customers. 2015 Duramax 6.6, getting 2 codes for the EGR bypass valve. 2015 Duramax 6.6, getting 2 codes for the EGR bypass valve. Looking for diag & repair info for these two codes.To fix the automobile fault code p11cc, follow these steps: 1. Check the possible causes mentioned above. 2. Visually inspect the wiring harness and connectors related to the fault code. 3. Look for any damaged components. 4. Check for broken, bent, pushed out, or corroded pins in the connectors.Bar codes are a machine-readable representation of data. They have expanded in complexity from the original data representation in varying widths and spacing of vertical lines to t...Jan 7, 2018 · P2599&P2263 Engine power reduced. My issue has been going on about a year. All started with all of the DEF codes and the 2599 and 2263. After three trips to the dealer and replacing the tank, heater, injector GM finally fixed the DEF system. On my last trip pulling about 12K 5er and ATV behind the trailer. #2 · Jul 30, 2013. Has the GPCM (Glow Plug Control Module) been replaced? If so you need to program the injector flow rates into the GPCM. DTC P160C: Engine Calibration … The Duramax code P01F0 is a red signal for your car. You should be aware of the signs of this code to solve the problem as soon as you can. Filling up the thermostat with coolant might solve the problem temporarily. It is best to replace the old one with a new thermostat. My problem is, I just purchased a 2011 Duramax 3500HD, the check engine light keeps coming on with a code of P2201, Nox sensor , this what OnStar has told me. I’ve taken it to the dealer and they have reset the code. In about four to five days the light comes back on, this has happen three times. They said that there is a short in the sensor ... P140C GMC Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis. Home GMCP140C GMC DTC P140C Make: GMC Code: P140C Definition: Exhaust Gas Recirculation (EGR ... Took a day to replace both itmes and all old codes went away and truck ran great. We are now getting codes P154D and P154B. Any ideas what this could be related to. Checked all connections and wires and seem to be good. Bo signs of corrosion or wear. TIA!!! Like. Sort by Oldest first.chevymech93. 2 posts · Joined 2015. #6 · Feb 3, 2015. working on a stock 08 duramax. came across the code P0456- EGT sensor 1 high voltage. i see all the after market egt sensors are on the manifold right next to the down pipe... is that where the stock sensors are located as well? Like. Ryan Kelley. Director of Transportation. Technical School. 202 satisfied customers. Just put in a block on a 2013 Duramax lml. Getting code. Just put in a long block on a 2013 Duramax lml. Getting code p128e and p0303. Engine runs rough and is in reduced power mode. … read more. P140C Code: Meaning, Causes, and Symptoms | OBD2 Codes. P140C – Exhaust Gas Recirculation Slow Response Decreasing Flow . P140C Possible Symptoms . Engine Light ON (or Service Engine Soon Warning Light) P140C Possible Causes Engine-Codes.com Mar 2, 2020 · DTC P2510. Engine Control Module Relay Circuit. Diagnostic Fault Information. Circuit/System Description. The ignition relay is normally an open relay. The relay armature is held in the open position by spring tension. When the ignition switch is turned to the Run or Start position, current will flow through the relay coil. P0114 Intake Air Temperature Circuit Intermittent. P0115Engine Coolant Temperature Circuit Malfunction. P0116Engine Coolant Temperature Circuit Range/Performance …Obviously p205b is reductant tank temperature sensor range/performance. Dealer says they need to order a new tank/pump Assy. Also reflashed with the latest updates. Hopefully I don't start getting frequent regens or something else goofy. 2011 chevy 3500hd cc 4x4 drw ltz loaded with snowplow prep.DTC P2510. Engine Control Module Relay Circuit. Diagnostic Fault Information. Circuit/System Description. The ignition relay is normally an open relay. The relay armature is held in the open position by spring tension. When the ignition switch is turned to the Run or Start position, current will flow through the relay coil.Aug 11, 2020 · Diesel mechanic. Associates. 298 satisfied customers. 2015 Chevy 2500 HD 2015 Duramax. 85000 miles, P11CB keeps. 85000 miles, P11CB keeps randomly setting, NOx sensor 1 has been replace, EGR valve has been replace, been to dealer multiple time for this … read more. Jan 12, 2022 · A brief view of the diagnostic trouble codes (DTC) on a Duramax LBZ 6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) 6.2L Diesel Engine Fuel System, Air, Exhaust & Emissions Upgrades Top Contributors this Month View AllRon Nielson. 10263 posts · Joined 2009. #2 · Jan 16, 2021. Hard to find information about this code, and the correct code seems to be P147B. There is information about this code for the 3.0 Duramax, but not yours. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different. | Cuwweigbeuzz (article) | Mrhly.