This is for code P0299: Verify the integrity of the air induction and turbocharger pipes and hoses by inspecting for the following conditions: Any damaged components. Loose or improper installation. Wet or restricted air filter. Exhaust leaks before the turbocharger. Exhaust restrictions after the turbocharger.Duramax Fourth Generation: 2007.5-2010 (LMM) P0101 Code. Jump to Latest Follow2008 Duramax DPF P2463. After replacing a completely clogged EGR valve and cleaning the EGR cooler, I took it for a drive. About 15 minutes into, I got the P2463 code, along with a message saying see owners manual engine power reduced. After resetting code P2463, the message remained until I turned the truck off.Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain ... During that time frame I started getting several codes. I got glow plug 1 code. P0403, P0102, P0101. I replace the EGR valve, the glow plug, and the MAF. Come to find out my EGR Cooler is blocked so that is when I blocked it off.Don't think it the 0401 is your problem either, sound like something else. 2007 LBZ tow rig/Daily driver, stock engine 11.70 @ 115mph on #2, 677 HP, MPI Twins. 23.5 MPG Diesel Power Challenge 2008. 2002 LB7 Max'd Out 9.71@141+MPH on #2 fuel only, MPI Twins.Apr 7, 2015 · MAF range, p0101 code. ... 2006 Chevrolet 2500HD Duramax CCSB LT3 - MBRP Downpipe, MBRP 4" exhaust, Edge CTS and Pyro, Leveled Tow Mirrors, WeatherTechs, B&W Turnover ...Greene County, In. Jul 1, 2019. #1. Over the course of the weekend I installed a full WC Fab intake bundle, full egr delete, and PCV reroute. After starting truck and letting warm up to purge air from coolant I noticed that occasionally the VGT would cycle like they do upon start up. Went over and checked for DTC’s and found P0101 and P0103.2002 2500hd duramax. Trying to pass CA smog and cure an occasional smoking problem and odd exhaust smell. SES light, checked and I have a P0101 code. Replaced the MAF sensor and cleared the code. Took … read moreMy 2015 Duramax with 130k miles threw a P01F0 code, which my scanner and other threads on here confirm is a low coolant temp. Based on other threads here, and what I've researched online, the thermostats were the most likely culprit. I've changed them and my temps are still low. Today I changed the coolant temp sensor, still low.5 Jun 2021 ... ... codes. P0101 MAF Performance Code. How to replace a MAF Sensor. If your engine is running rich at idle, has hesitation or a rough idle, this ...Try this before replacing your nox sensor on your Duramax.Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. p0101 MAF code. Jump to Latest Follow 2K ... I had a P0101 MAF performance code this evening would this cause a limp mode on my LBZ. Could not get the sensor to act up while hooked to the scan tool drove about 25 miles.11 posts · Joined 2011. #1 · Jun 28, 2011. So my truck felt like it had half the power it should so i sent it in to dworkin chevrolet and they said i had a code p1093..they tested my fuel psi with the tech 2 and they said they can only force 18000 psi when it should be at 23000 to 25000psi..my question is what will cause this bad injectors or ...15 posts · Joined 2011. #3 · Oct 2, 2023. 1) If you have a cold air induction - make sure there are no leaks between the MAF and the rest of the engine. Go through and put a 1/4 turn on every screw. If you don't have a CAI, make sure the connection to the turbo inlet is equally air tight.Nov 30, 2014 · rip: 04.5 LLY - 06 LBZ - 72 C10 LBZ & A Couple Other Nameless Diesels! I cleaned the MAF right after clearing the first two codes - P0101 & P0299. The under-boost code did not come back, but the MAF code did. The truck is not running well.p0401-exhaust gas recirculation flow insuff detected. p0404-exhaust gas recirculation circuit range/performance. p0299-turbo charger underboost. All three of these codes have been coming up lately, i have cleared them all with my tuner but they come right back after a few minutes of driving. i cleaned the MAF sensor and EGR valve and it didnt …Ron Nielson. 10735 posts · Joined 2009. #4 · Aug 7, 2021. MAF is about 50% is what it should be. Most trucks run 35-40 gm/sec at idle. Make sure your MAF Sensor is getting proper power and ground. Check connector carefully for any corrosion, dirt, etc. Use MAF cleaner and see if MAF will come back into spec.P0229 and P0101. I started getting P0299 and P0101 codes on my 2006 Chey Silverado 2500ext cab w/8' bed Dmax ( no mods ever done to the engine) has 250,000. research looks like a sticky turbo and MAS . There are holes in my exhaust so I'll probably have to go with a complete turbo back exhaust and replace the turbo .Jun 15, 2015 · The MAP pressure sensor has a range of 43-365 kPa (6-53 psi). The ECM monitors the MAP sensor by comparing a calculated predicted value at a predetermined engine load and speed, to the actual sensor input. Conditions for Running the DTC. DTCs P2564 or P2565 are not set. The engine speed is between 800-3,000 RPM.5200 posts · Joined 2010. #5 · Aug 15, 2017. I noticed you have a K&N filter installed. Oiled air filters can deposit oil on the MAF and Thermistor of the sensor and lead to this P0101. The code could also flag a wiring issue with the sensor. This site has some good info on the MAF and problems associated with it.There are as many ways to learn to code as there are ways to use your coding ability. You can learn it from college courses, books, online resources—or from one of several growing ...Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain P0401 Code. Jump to Latest Follow ... I have a 2008 GMC LMM 12800 miles I keep getting a P0401 code restricted EGR flow. I replace EGR valve and motor, Cleaned EGR manifold, replace EGR manifold MAP sensor, Replace MAF sensor, replace air …I'm trying to figure out exactly what the mass airflow sensor does for the Duramax motor, in this case it happens to be an LLY. I am getting black smoke under load and also have a reoccurring MAF code P0101. The data on the scan tool for the MAF looks fairly normal to me, though I don't have a lot of experience with watching the data stream on this vehicle (even though I own one of my own, and ...Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain. P0101 randomWhen it comes to code editors, developers have a plethora of options to choose from. Among the popular choices is VS Code, a lightweight and powerful code editor developed by Micro...The P244B code is triggered when the PCM detects the differential pressure across the DPF exceeds the expected value. Note: The definition of the P244B code can be different depending on the vehicle manufacturer.Consult the appropriate repair manual or repair database for the exact code definition.See full list on motoraudit.comChevy p0101 engine check light p0171Sensor maf mass flow air map location p0101 engine airflow nissan hyundai check circuit chevrolet range performance code rogue problems 2015 chevy silverado duramax 6.6 p0420 cat codeSetup running location when old.Constant p0101 and p0380 codes and crappy mileage! Jump to Latest Follow 4K views 6 replies 4 participants last post by f419sr1 Aug 3, 2010Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain. P0101 code. Jump to Latest Follow 6K views 3 ...Also comes up when dsp switch is installed and ECM plug not seated along with pins. P0405 is Egr position sensor low, Egr 5- volt reference voltage open. P02E8 is Diesel intake air (ia) position sensor circuit low voltage. Name to come. 2013 GMC Denali HD 2500 ccsb,100%stock,spray liner,B&W, Sold not forgotten.Guys, I'm dealing with a P0101 code (MAF Sensor Performance) code that I can't seem to sort out. Truck is a stock '09 LMM. It will clear, but then goes on after the truck runs for a minute or two. ... Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less .white smoke mass air flow code. I noticed to day that i had no power and had code p0101 and p0102, both are air flow sensor codes. I noticed a lot of smoke, no power, intake temp on bully dog went up to 210 deg. boost was only 1 lb tops. Cleaned MAF sensor with appro cleaner.I made my own intake from a k&n ram air filter from a dodge and some pvc. Im losing power now and getting codes p0101 and p0299. Anyone know whats goin on...Jan 15, 2015 · A. Austin Bland Discussion starter. 17 posts · Joined 2013. #1 · Jan 15, 2015. just had my truck deleted kicked on a mass airflow cleaned filter reset code two days later mass airflow performance code pops up banks ram air using k&n cleaner kit. 2012 GMC 2500HD 4x4 cc/sb, 18"xd spie's, 33.1250 toyo mt's, mbrp downpipe, banks intake, flo pro ...The exact MPG any engine gets depends on the vehicle it’s used in, but the 6.6-liter Duramax diesel engine gets an EPA-estimated 15 MPGs in city driving and 20 MPGs on highway driv...2006 Chevy Silverado 6.6l Duramax (LLY), check engine light is on with mass air flow sensor codes, no parts were needed to fix this one.This is for education...Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain. p0101 code. Jump to Latest Follow 2K views 2 ...Just randomly checked my codes and I have a P0101 code... Is there something I'n the efi settings I need to change? And I haven't noticed any performance drops... I dont think... Everything seems fine.. ... Chevy and GMC Duramax Diesel Forum. 3.8M posts 207.6K members Since 2005 A forum community dedicated to Chevy and …Nov 9, 2012 · EvancLBZ, Had the same problem, Pulled the EGR out and cleaned it 4 weeks ago. Fun times It was about 90% blocked. This was my first time doing it at 92000 miles. Suggest while you have the EGR out just replace the EGR Solenoid (motor). Even after cleaning the EGR I was still getting the P0402 code.07 Chevy 2500 Silverado 6.6 Duramax has 2 codes, P0101 mass…. 07 Chevy 2500 Silverado 6.6 Duramax has 2 codes, P0101 mass air flow sensor. P0401 Egr flow insufficient. Checked air filter was in backwards, blew out and put flow in the right direction. It said.Hello Ladies and Gents :) How are ya'll? Like no really, HOW are YOU? :/Hope you are better than me an my P0101 I mean truck :DYeah. IDK. Watch the vid thoug...Chevy / GMC Duramax 04.5-05 LLY Forum. 04.5-05 LLY Duramax Powertrain P0101 after S&B intake install. Jump to Latest ... Since ive had a soft P0101 code. Datastream shows 60+ grams/second at idle. I know this to be too high, tried cleaning the MAF, tried a new one. Still too high. I have had the dealer reflash the ECM/TCM to all the latest ...2008 chevy duramax set code p0101 when deceleration - Chevrolet 2008 Silverado 3500HD 2WD question. Search Fixya Browse Categories ... Hello and welcome. this code P0101 indicates a problem with the mass air flow sensor. this usually requires the replacement of the mass air flow sensor. but there will be a few checks to be made before the ...the P0101 code is a MAF sensor code. the P04xx series is all EGR and the P0674 is glow plug #4. what did you do exactly to cause it to throw those codes . Save Share. Like. ... 2005 CHEV 2500HD CCSB 6.6 DURAMAX LLY MBRP 4" TURBO BACK, MP MOD,AEM Brute force CAI, EDGE CTSMedicine Matters Sharing successes, challenges and daily happenings in the Department of Medicine The COVID-19 E210 codes for the university are as follows: COV COVID-19 Leave FCOV...AC DELCO Mass Airflow Sensor: amzn.to/2pul9poReplacing and cleaning the Mass Airflow Sensor on my Chevy Silverado. I was getting the check engine light wou...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.Truck sounded odd and service light came on. checked codes and got codes p0101 which is maf sensor also code p0299 somthing about turbo. Cleared those codes went out run my truck pretty hard and get code p0106. any help would be greatful. ... 06 2500hd ext. LT1 Duramax - H2's, 285 goodyears, Mbrp 5 inch exhaust, c2 gauges,Tierod sleeves ...I'm trying to figure out exactly what the mass airflow sensor does for the Duramax motor, in this case it happens to be an LLY. I am getting black smoke under load and also have a reoccurring MAF code P0101. The data on the scan tool for the MAF looks fairly normal to me, though I don't have a lot of experience with watching the data stream on this vehicle (even though I own one of my own, and ...Fuel System Problems. Your Duramax relies on a clean and unobstructed fuel supply. Issues with the fuel filter, fuel line, or fuel injectors can cause reduced engine power. A faulty injector can disrupt the fuel mixture, and clogged fuel filters restrict fuel flow, both potentially leading to limp mode activation for protection.DTC code 2459 stating regeneration frequency. I also have P0101 code stating MAS sensor problem. My truck has been in multiple times since purchase in Nov. 2012 regarding regeneration. Off the lot burns were about 450 miles between regen modes. ... If you have a Duramax LML engine that is or has in the past not performed properly, posted a DTC ...MAF, P0101 code after K&N filter instal. Has anyone had a problem with the MAF sensor out of range after installation of any aftermarket air cleaner and is there a fix for the sensor. The sensor is not bad it‚Äôs doing what it is supposed to do and the system is alerting me by way of check engine light. I have heard of oil getting on the ...Jul 13, 2019 · P0101. Usual cause is aftermarket air intake, altered or leak in your intake track also caused by EGR witch you deleted. The MAF at idle should be 40g/s but most trucks will vary 38-41. 2020 GMC Sierra SLT 3500 CC/SB L5P 3/14/20 Payload 3726lbs. AirLift LoadLifter 7500 XL.LMM P0101 code. 2010 3500HD, stock except for tires. Pulled the cooling stack apart to clean the rad, as it was caked with dirt and causing the truck to overheat while towing. After reassembly the truck is throwing a P0101 code and going into limp mode. MAF was cleaned, and then replaced. Air filter is OEM and still clean.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...Jul 3, 2017 · The next day I towed the camper home. 65 MPH for about 60 miles and stopped for lunch. When restarting the truck, the reduced power mode and P0101 code came back up. I was able to reset the code and make it the last 40 miles to my house. When backing the camper up the driveway it coded again.P0101 is the MAF. P0404 is the Exhaust Gas Recirculation (EGR) Open Position Performance. I had the same thing, and after changin the EGR valve (no help) and the Vacuum pump (No help) I Cleaned the MAF sensor (now I do not get eiother light, I still get the P0401, if I let the truck idle for more than 30 seconds after it warms up.Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Performance Parts Discussion Weird P0101 symptoms ... Max was your F.P.R.V. giving you a P0101 code? 2007.5 LMM ReadyLift 2.5". Ultra Grinder 20X9. Nitto Terra Grappler LT305/55R20. AFE drop in with airbox mod. 5" MBRP turbo back w/custom dual tips. EFI Live!! 130HP tune HELL YEAH! …I have a 2007.5 Silverado 2500HD Duramax with code P0101 and P2463. My Airflow Leak Equivalency Ratio is 2.0 and my DPF soot level is at 90. Code P2463 will trigger with vehicle not running and 'reduced power' shows on DIC. DPF differential with vehicle not running is 0.1 psi.p0101 code. Jump to Latest Follow ... Chevy and GMC Duramax Diesel Forum. 3.8M posts 209.6K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!Subject: Duramax Diesel Airflow Leak Equivalency Ratio And P0101 Models: 2007-2013 Chevrolet Express, Kodiak, Silverado 2007-2013 GMC Savana, Sierra, Topkick Equipped with the 6.6L Duramax Diesel Engine RPO code LGH, LML, and LMM This PI was superseded to update model years and recommended field. Please discard PIP4932A.Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain. P0101, P0490, U1026 help? Jump to Latest Follow 11K ... I check them with a GM tech II and get these three codes P0101- MAF performance P0490- EGRChevy / GMC Duramax 06-07 LBZ & LLY Forums. ... MAF, P0101 code after K&N filter instal. Jump to Latest Follow 21 - 21 of 21 Posts. 1 2. smokinlmm · Banned. Joined Jan 7, 2010 · 6,055 Posts #21 · Sep 25, 2011. Only show this user. Some maf sensors oporate in the upper or lower part of the acceptable ranges so they tend to be more sensative ...chevypower Discussion starter. 153 posts · Joined 2010. #1 · Oct 21, 2011. my truck has started throwing this code p0108 going up hills after a downshift any ideal what i need to do. thanks for any help. 06 Lbz reg cab 3500 4x4... 4 in. straight, egr block plate, air dog 100 and fprv shim ... I have efi live v.2 using to data log and clear codes.P2564 Code. Definition: Turbocharger boost control position sensor ciruit low voltage. Explantation: The ECM detected a low voltage from the Turbocharger Boost Control Position Sensor. Probable Cause: 1-Open or short ciruit condtion.MAF Sensor Help P0101. So, I have been battling the pesky P0101 code for a year now on my 08 LMM. It seems to only ever trigger and derate my truck when I haul a trailer during the summer or am going 80+ MPH in the summer for an extended period of time. Other than that, I can clear the code with my innova scanner and no issues for the next few ...P0101 code in the Chevy Silverado is crucial to maintaining your truck's performance and ensuring it runs efficiently. This code indicates that there is a problem with your truck's Mass Air Flow (MAF) sensor, specifically, a Range/Performance issue. The most common cause of P0101 is a bad MAF sensor.Apr 5, 2021 · P0102 CODE HELP!! I recently started getting a check engine light for code P0102 on my 02 LB7. Truck is tuned on EFI Live for over a year now and has been running great until this issue. Ireplaced the MAF sensor last week with no luck. Pulled the air filter and cleaned it/washed it, no luck. Air filter is not a oiled K&N unit.So much has changed about the way people make calls. For example, you can’t even call your next door neighbor’s landline without using an area code, and you certainly can’t call mo...Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain p244c code. Jump to ... I recently got the P244C code which is something like "temp to low to regen". The code disappeared and hasn't reappeared yet but I'm wondering what to expect. ... P0048, P0087, P0101, P0201-P0208, P02A1, P02A5, P02A9, P02AD, P02B1, P02B5, P02B9, P02E0 ...Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. p0101 MAF code. Jump to Latest Follow 2K ... I had a P0101 MAF performance code this evening would this cause a limp mode on my LBZ. Could not get the sensor to act up while hooked to the scan tool drove about 25 miles.The p0101 mass airflow sensor code keeps coding when starting engine and outside temperature is cold. after initial - Answered by a verified Chevy Mechanic. ... 07 Chevy 2500 Silverado 6.6 Duramax has 2 codes, P0101 mass air flow sensor. P0401 Egr flow insufficient. Checked air filter was in backwards, blew out and put flow in the right direction.Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain. Codes p0401, p0101 keeps reducing engine power. Jump to Latest Follow 14K views 4 ...2010 2500 6.6 Duramax Codes P2463,P244B, PO101. It keeps running on reduced power. Installed a MAF (rebuilt), no help - Answered by a verified Chevy Mechanic. ... This is also causing the P0101, as the exhaust is restricted, and this affects the airflow. The computer is seeing that airflow measured at the MAF isn't what it expects it to be, and ...Come along with Eric O. at the SMA shop as we have a look at this Chevy 2500HD with the Duramax Diesel 6.6 LLY that has the famous EGR Code P0401 and P0404. ...Here are the codes that its throwing. Ideas??? P0046 turbocharger boost control position performance P0101 mass air flow (MAF) sensor performance P0299 turbocharger engine under boost P0401 EGR flow insufficient ... --CC, SB 4X4 Duramax Diesel/ 6 spd Allison Auto (PTO high idle mod)i have a 2002 gmc duramax lb7 setting dtc p0101 code at idle. engine is all stock. scan tool readings are as follows, engine speed 681,maf 5.3 hg, all elecricial consumers off. load 18.4,map 28.9 car is at sea level. coolant temp 172,iat 154 and outside air temp is 106. as soon as dtc is erased dtc will return within 102 sec. i replaced the maf ...I keep getting a MAF code P0101, I have cleaned the sensor and last night I replaced it with one from another 01 truck, still get the code. ... Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. We strive to keep this the #1 forum for tech and information while continuing the ...Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain P0401 Code. Jump to Latest Follow ... I have a 2008 GMC LMM 12800 miles I keep getting a P0401 code restricted EGR flow. I replace EGR valve and motor, Cleaned EGR manifold, replace EGR manifold MAP sensor, Replace MAF sensor, replace air filter, (stock replacement) Forced a ...GIVING ME ENGINE CODES: P0101, P0102, P0113, AND P0299.STARTED AFTER I HAD OIL CHANGE AND HAD TRANSMISSION COOLER LINE REPLACED. IT IS SMOKING LIKE A FREIGHT TRAIN. ... I have a 2006 chevy 2500 HD 6.6L duramax LB7 I was out in the mud when my air filter fell off the itake tube and ended up sucking mud through and out the other side of my turbo.P0191 fuel rail sensor. Alright guys, I've had this engine code for awhile, and never thought it was anything, CTS says the pressure was fine until recently. The light only comes on when at idle, and the fuel pressure goes from 4.4k to 5.0k at idle. It's audible too, the engine goes from 640rmp to about 660 so I'm think it's the regulator.Try this before replacing your nox sensor on your Duramax.Mass airflow sensor code on and lack of power. I have a 05 stock duramax with k&n air intake. The engine light came on showing a code for mass air flow. I replaced the mass air flow sensor with a delfi napa part. Pulling a 3000lb empty trailer going 70mph down the freeway the engine will stutter/cut out and lose power.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...Limp mode with codes P0101, P1093 and P0670. ... 05 Chev, 2500HD, CC, SB, Duramax, Allison, 4WD, bought new December 04, Torsion bars all the way down with weld racing velocity 8's all around and looks like a two wheel drive, MBRP cat back, EGR blocker plate, FPRV race plug, ran predator and edge but removed both, stock tune now. ...How to Fix P0101 Code On 6.6L Duramax? (Fully Explained) Duramax P0101 is an urgent DTC (Diagnostic Trouble Code). A code may appear at anytime while driving…. Read More How to Fix P0101 Code On 6.6L Duramax? (Fully Explained) 5.3L vs 6.2L V8 Engines: Performance, Efficiency, and More.Duramax Fourth Generation: 2007.5-2010 (LMM) weird p0101 code. Jump to Latest Follow ... The most common causes of the, I blog about clean code, refactoring and TDD. I have been working on the industry for the past 25 years R, Duramax Third Generation: 2006-2007.5 (LBZ & LLY) Throwing Code, 8 posts · Joined 2015. #1 · Jan 18, 2016. 03 lb7 getting p0089 fuel pressure regulator 1 performanc, LB7 MAF code P0101 need some help.. So I'm at my wits end, I , Duramax Fourth Generation: 2007.5-2010 (LMM) P0101 code on stock intake/filter. Jump to Latest ... I cleared the P010, PUK is an abbreviation for Personal Unblocking Key; your PUK , Duramax Second Generation: 2004.5-2005 (LLY) P0101 cod, Save up to $160 with Logitech promo code. 49 active L, P0101 Honda Mass Air Flow Circuit Range/Performance 📷. P0101 Hu, I have a bullydog power pup in my 03 lb7 which will, Jsewall82 Discussion starter. 2 posts · Joined 2015. #, 2.3k views. asked Oct 17, 2017 by anonymous. My 2012 , Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & L, 2002 2500hd duramax. Trying to pass CA smog and cure an occasio, The title said p0402. 2020 CCLB 3500 4x4 SRW HC. 2006 Chevy 250, 2005 Chevy crewcab Duramax. Only alterations from stock , P0101 mass air flow out of range. P0102 mass air flow signal low. P04.