About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Mitsubishi Canter. Enter the car make and car model for which you want to see an overview of engine codes. In the overview, you will then get a list of the engine codes with the years of construction and engine capacity. If there is a match with other car makes and car models, these will also be shown in the overview.The 2016 Chevrolet Silverado 2500 has 3 different fuse boxes: Engine Compartment Fuse Block diagram. Instrument Panel Fuse Block (Left) diagram. Instrument Panel Fuse Block (Right) diagram. Chevrolet Silverado 2500 fuse box diagrams change across years, pick the right year of your vehicle:What is the Cost to Diagnose the Code P01F0 2017 GMC Sierra? Labor: 1.0. The cost to diagnose the P01F0 2017 GMC Sierra 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 …Randomly recieved a check engine light on our Chevy Blazer. Today we diagnose the codes, determined what it was and found the fix! If you are running an afte...Replacing thermostats on a 2013 chevy silverado 2500hd duramax turbo diesel 6.6.P01f0 2015 duramax... P01f0 2015 duramax , dealer wants 500 to replace thermostats they say ther is two seams steep Mechanic's Assistant: Okay, I'll connect you to the Mechanic to go over that information regarding your GMC.P01F0 detects stuck open thermostat by monitoring for decrease of coolant temp below monitoring threshold. 2023 LZO Sierra 4x4 crew 6.5 box Sold 2021 LM2 Sierra 4x4 crew 6.5 box, 2018 L5P Sierra 4x4 SB, 2011 LML Sierra 4x4 CCSB, 2010 LMM, 2004.5 LLY. Save Share. Like. G2GBY.Nov 19, 2019 · Regardless, P0420 is related to HC (hydrocarbon (diesel)) conversion rate not a DEF problem. As wiilydmax indicated, there is likely some problem with the 9th injector (regen injector) not spraying correctly, so the fuel isn't being converted to enough heat to get the regen done. 2023 LZO CC std box 4x4. This video shows the step by step process I took to replace the coolant temperature sensor on 2016 to 2020 Chevy Camaro 3.6LBlessings everyone, if you found ...Jul 9, 2012 · You can actually ask them to run a remote diagnostic anytime. you just have to do it from your car (press the blue onstar button) Richard<br />2011 Ford Explorer XLT (for the wife)<br />2009 Honda Odyssey EX-L (for the nanny)<br />2009 GMC Acadia SLT-1 (for someone else to worry about...aka SOLD)<br />2008 Chevy Suburban LTZ (for the boat) Share. 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.Code P01F0 2016 GMC Sierra Description. The Engine Coolant Temperature Sensor is a 2-wire negative temperature coefficient thermistor. As the temperature of the …P01f0 coolant temperature dropped below diagnostic monitoring temperature. Monitored coolant temp on scan tool and the hottest it got was 160, operating ...My 2007 Mercedes, E-350 has this check engine light on, code P0000. What is wrong?... 1999 Merceds Benz V230 gas codes U0109, B078E, P01F0 & P0000 Hi, I have a ...One or more diesel exhaust fluid (DEF) warning messages are displayed. The malfunction indicator lamp (MIL) is illuminated. The engine may crank but not start. The engine may run rough or misfire. The technician may observe on a scan tool one or more of the following DTCs set as Current or in History: DTC. Description.Se esta temperatura for inferior a uma temperatura mínima calibrada (71 °C durante mais de 30 s), uma vez que o veículo tenha atingido o estado normal de …The engines in the XC90 have reportedly been prone to suffer from random or multiple misfires, which is shown by code P0300. This can be just an extensive issue as P0171. Anything that upsets the ideal air-fuel mixture or prevents the cylinders from igniting can cause this problem. The best way to solve this issue with your Volvo is to look for ...Oct 19, 2019 · P01f0 2015 duramax... P01f0 2015 duramax , dealer wants 500 to replace thermostats they say ther is two seams steep Mechanic's Assistant: Okay, I'll connect you to the Mechanic to go over that information regarding your GMC. Jan 12, 2020 · well, I have the P01F0 code on my 2015 GMC Sierra 2500 Duramax 6.6 LML. I hear plenty about the thermostats, but I checked the ref voltage circuit for the ECT sensor and I have 10 kOhm to ground. I lo … read more P0122 Throttle/Petal Position Sensor/Switch A Circuit Low Input. P0123 Throttle/Petal Position Sensor/Switch A Circuit High Input. P0124 Throttle/Petal Position Sensor/Switch A Circuit Intermittent. P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control. P0126 Insufficient Coolant Temperature for Stable Operation. I had found that out. I was wondering if it would be okay to drive. I know with gas fuel injection it can cause them to run rich. Apparently on the diesel it doesn't do that. It ran fine and got the same 14-15 mpg it gets on the road. I'll change the thermostats after the holidays. Work is killing all my time.Nov 8, 2021 ... Same code just popped up on my truck- 2021 sierra 1500, 43000 miles. Also got a p01F0 code at the same time. Probably going to call the dealer ...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), …BrianC115. Owner/Operator. Associates in Automotive C... 77 satisfied customers. Check engine light came on when temps dropped below freezing. Check engine light came on when temps dropped below freezing and reading code P01F0. Coolant temp dropped below diagnostic monitoring temp. … read more.Jul 30, 2020 · The GMC code p01f0 means Coolant Temperature Dropped Below Diagnostic Monitoring Temperature. It is a sign of a problem with the coolant thermostat, such as a faulty or stuck thermostat, bad coolant temp sensor, or radiator fan issue. The likely fix is to replace the thermostat and flush the engine block and radiator. Chris_H. 16 posts · Joined 2015. #4 · Nov 23, 2015. I have a 2013 Sierra 2500HD. I just bought it with 125,000 miles on it, and it threw the P21DD code as well. It was about 28F this morning. Went to Autozone to get the code read, because turning around to return home wasn't as convenient. The heater doesn't look too bad to replace, H&S has ...Jun 9, 2020 · 4106 posts · Joined 2019. #58 · Jan 27, 2023 (Edited) This P0128 code and indication of an ECT sensor and/or failing thermostat have been showing up on other GM vehicles like the Colorado/Canyon and Camaro cars that use the same 3.6L LGX engines and same symptoms. The 2016 Chevrolet Silverado 2500 has 3 different fuse boxes: Engine Compartment Fuse Block diagram. Instrument Panel Fuse Block (Left) diagram. Instrument Panel Fuse Block (Right) diagram. Chevrolet Silverado 2500 fuse box diagrams change across years, pick the right year of your vehicle:Step 3: Inspect The Reduction Tank Heater Control Module. Sometimes a fault or defect in the control module of the tank triggers the P21DD. Due to the lack of signal sent from the sensor to the Power Control Module, it happens. This control module is located just above the heater tank. You need to remove three Allen bolts.How to Make Your Duramax Diesel Engine Bulletproof. Here Comes the Hurricane: This 500HP+ Twin Turbo Inline Six is the Replacement for the Hemi V8. 1. Snapped Crankshaft. Perhaps the most devastating of all Duramax failures is a broken factory crankshaft. Not only does this mean game-over for the engine, but it results in a …What Does the P01F0 2016 GMC Sierra Code Mean? The Engine Coolant Temperature Sensor is a 2-wire negative temperature coefficient thermistor. As the temperature of the …The 2.3-litre diesel engine is our favourite – Iveco offers it in 116bhp, 136bhp and 156bhp forms. The entry-level 116bhp version is certainly adequate, but its peak torque arrives a lot later ...How to Make Your Duramax Diesel Engine Bulletproof. Here Comes the Hurricane: This 500HP+ Twin Turbo Inline Six is the Replacement for the Hemi V8. 1. Snapped Crankshaft. Perhaps the most devastating of all Duramax failures is a broken factory crankshaft. Not only does this mean game-over for the engine, but it results in a …JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. P01F0 code 2015 Duramax, I've cleared the code multiple times. Chevy 2500 4X4, Just clearing the code with my code - Answered by a verified GMC Mechanic. Code: P01F0. System: Powertrain (Covers functions that include engine, transmission and associated drivetrain accessories) Category: ISO/SAE (It is core DTCs and applied to most manufacturers. A common fault message is assigned …Remove thermostats and verify proper operation. Bring to boil in a pot of water and see what temps they open and close at. Start opening ~ 160 Fully open at ~ 180 Degrees F roughly. Could also be a bad ECT Sensor. You can do a resistance check at various temps. At 0 degrees F Res = 9420 ohms At 50 degrees F Res = 973 ohms at …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0670 Saving Repair Parts...Check out the DIY repair and maintenance tutorials for the 2013, 2014, 2015, 2016, 2017, 2018, 2019 & 2020 Infiniti QX60 SUV - https://www.paulstravelpicture...How to Fix P01F0 Code On Duramax (A Comprehensive Guide) Diagnostic Trouble Codes (DTC) will tell you about the problem with your car. These trouble codes on…Nov 29, 2022 ... P0128 or p01f0 may be set in ecm. this job can be performed in about 1hr it would be considered and easy repair. thanks for watching, hope ...Nov 9, 2017 · LML Thermostat Replacement Tips. With the cooler nights, I've got the P01F0 code for low coolant temp/open thermostat. I replaced my thermostats in my old LLY but this will my first time working on the LML. I see that theres more stuff in the way, the hose comes out of the top instead of the back, and it looks like you have to remove the fan ... Jun 9, 2020 · 4106 posts · Joined 2019. #58 · Jan 27, 2023 (Edited) This P0128 code and indication of an ECT sensor and/or failing thermostat have been showing up on other GM vehicles like the Colorado/Canyon and Camaro cars that use the same 3.6L LGX engines and same symptoms. Randomly recieved a check engine light on our Chevy Blazer. Today we diagnose the codes, determined what it was and found the fix! If you are running an afte...Apr 29, 2016 · キャンター エンジン不調 三菱ふそう トラックの整備修理なら兵庫県姫路市のオートガレージタイヨー. 停車中にエンジンが時々止まるそうです。. この車両は、今回初めて当社にご入庫です。. 早速、スキャンツールで故障診断すると（診断中の写真取り ... 2013 Silverado 5.3 Temperature Sensor Location. I changed out the thermostat so went ahead and switched out the temperature sensor to avoid have to drain coo...In my latest video I explain this mystery and everything else you need to know about the thermostat issues plaguing the XT5. Lots on info to help you to get the dealership to fix it right the first time, or even fix it yourself! 2023 Lyriq: RWD, Stellar Black Metallic/Noir, 20" Wheels. Build Date: 4/27/23 | Took delivery: 5/8/23 | Original TPW ...So why in the world does a faulty thermostat cause a "Steering Assist is Reduced" message? In my latest video I explain this mystery and everything else you ...If You have a code P01F0 that usually means that there is a coolant temperature sensor problem. This could mean that there is a sensor that is failing. This can also mean that the thermostat is stuck open in Your vehicle and it is letting all of the coolant go through the heater core. This can make the coolant cooler than anticipated. The ...P01F0; Engine Controls and Fuel; ENGINE CONTROLS AND FUELDocument ID:(###) ###-####iagnostic Instructions. Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides …The P203B fault code relates to the reductant level sensor circuit rangeperformance. The level sensor measures the tank level at three different heights using four high-grade stainless steel pins. The sensor can only detect liquid reductant and cannot detect frozen reductant. The measured level is used to update the calculation of remaining ...Replacing thermostats on a 2013 chevy silverado 2500hd duramax turbo diesel 6.6.Dec 10, 2022 ... I have a 2015 Chevrolet Silverado 2500HD LTZ 4x4 with the venerable 6.6 liter LML Duramax diesel. I had a check engine light come on and ...Most Nissan And Infiniti cars with CVT transmissions need a configuration file after replacement or repair if the TCM is new it will come with a calibration...Se esta temperatura for inferior a uma temperatura mínima calibrada (71 °C durante mais de 30 s), uma vez que o veículo tenha atingido o estado normal de funcionamento, o código de diagnóstico P01F0 OBD2. Sintomas do código de falha P01F0. Luz de verificação do motor.Run the engine through a complete operating temperature warm up (the thermostat should be fully open at 107°C (225°F). Pressurize the cooling system on a cold soak engine (after being warmed up to operating temperature). Inspect the suspect cylinder(s) with a blacklight borescope for evidence of the coolant dye.Cadillac’s parent company, General Motors, has issued a service update for a very small number of the 2021 Cadillac XT4 compact luxury crossover and the XT5 …Feb 18, 2023 · P01F0 code comes up replaced the sensor came back it heats up to 185 and doesnt overheat can't figure it out, 2015 2500 - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. 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. P01F0 detects stuck open thermostat by monitoring for decrease of coolant temp below monitoring threshold. 2023 LZO Sierra 4x4 crew 6.5 box Sold 2021 LM2 Sierra 4x4 crew 6.5 box, 2018 L5P Sierra 4x4 SB, 2011 LML Sierra 4x4 CCSB, 2010 LMM, 2004.5 LLY. Save Share. Like. G2GBY.The truck reviewed here is a two-step march up from the base $48,465 Sierra 1500 4WD Crew Cab SLT, which lives just below the Sierra Denali in GMC’s pecking order. The $2105 All Terrain package ...P01F0 detects stuck open thermostat by monitoring for decrease of coolant temp below monitoring threshold. 2023 LZO Sierra 4x4 crew 6.5 box Sold 2021 LM2 Sierra 4x4 crew 6.5 box, 2018 L5P Sierra 4x4 SB, 2011 LML Sierra 4x4 CCSB, 2010 LMM, 2004.5 LLY. Save Share. Like. G2GBY.Jan 7, 2023 · The P0102 code is related to the mass air flow sensor and in most cases, it means that there’s a problem with the MAF sensor itself. However, there are other potential problems, such as a dirty air filter or a poor electrical connection, which is why a professional diagnosis is needed before replacing any parts. The 2.3-litre diesel engine is our favourite – Iveco offers it in 116bhp, 136bhp and 156bhp forms. The entry-level 116bhp version is certainly adequate, but its peak torque arrives a lot later ...JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. I am getting code P01F0 on my Chevy Duramax 2500HD. I have added coolant and the check engine light is still on. The - Answered by a verified Chevy Mechanic.13 hours ago ... Fnia Foxy Jumpscare · 2024 Enko scvp chie · P01f0 Code · Seriöse gewinnspiele mit lösungen · Professional Skills for Everyone | ASU&nbs...Changing ECT sensor on 2017 L5P. Hey everyone, I just bought this truck used with 90k miles. Of course about 100 miles into me having it, it throws a P01F0 code which supposably has to do with the coolant temperature sensor. Upon trying to fix …Chris_H. 16 posts · Joined 2015. #4 · Nov 23, 2015. I have a 2013 Sierra 2500HD. I just bought it with 125,000 miles on it, and it threw the P21DD code as well. It was about 28F this morning. Went to Autozone to get the code read, because turning around to return home wasn't as convenient. The heater doesn't look too bad to replace, H&S has ...Nov 9, 2017 · LML Thermostat Replacement Tips. With the cooler nights, I've got the P01F0 code for low coolant temp/open thermostat. I replaced my thermostats in my old LLY but this will my first time working on the LML. I see that theres more stuff in the way, the hose comes out of the top instead of the back, and it looks like you have to remove the fan ... Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/166/ad/thermostat-housingThis video shows you how to install a new TRQ thermostat and housing in your ...Code: P01F0. System: Powertrain (Covers functions that include engine, transmission and associated drivetrain accessories) Category: ISO/SAE (It is core DTCs and applied to most manufacturers. A common fault message is assigned to this code.) Component: Fuel and air metering. Jun 9, 2022 · What is the Cost to Diagnose the Code P01F0 2015 Chevrolet Silverado? Labor: 1.0. To diagnose the P01F0 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. DTC P01F0 Coolant Temperature Dropped Below Diagnostic Monitoring Temperature. Engine running for 15 min with the A/C OFF, increase the engine speed to 3,000 RPM. Verify the scan tool ECT Sensor parameter is greater than 79°C (174°F) . If less than 79°C (174°F) Replace the Engine Coolant Thermostat.Replacing a fuel pressure sensor on a Volvo XC90 with P0190 code.It's a very simple fix and requires a mini-ratchet with a torx25 bit.Applies to most Volvos ...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...Jan 14, 2019 · 89 posts · Joined 2016. #2 · Jan 14, 2019. I looked up that code I don't know if it is truck pacific but came up thermostat stuck open. 2019 GMC Sierra 3500HD CC SB 4X4 6.6 SLT SRW. Red Quartz Tintcoat Dark Ash Interrior Z71 Gooseneck/5th wheel Prep. 2017 Coachmen Chaparral 336TSIK 5th wheel. Save Share. Mitsubishi Canter. Enter the car make and car model for which you want to see an overview of engine codes. In the overview, you will then get a list of the engine codes with the years of construction and engine capacity. If there is a match with other car makes and car models, these will also be shown in the overview.Cadillac’s parent company, General Motors, has issued a service update for a very small number of the 2021 Cadillac XT4 compact luxury crossover and the XT5 …Ron Nielson. 10164 posts · Joined 2009. #4 · Jan 15, 2019. If you search this website for that code, I'm pretty sure you will find some information that is helpful. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different. 2008 Silverado LT, Crew Cab, 2WD,LB.C0379 is all about the axle actuator control circuit. Should be 12V on the brown wire at the actuator, and the TCCM should see 12V coming through the actuator on the light blue wire. When the TCCM grounds the light blue wire the actuator locks the axle. If either circuit is open, grounded, or shorted to voltage you will get that code.Randomly recieved a check engine light on our Chevy Blazer. Today we diagnose the codes, determined what it was and found the fix! If you are running an afte...Jan 23, 2022 · Sounds like some air in the coolant system. Keep driving it and monitor the system. Add coolant when necessary till the air is purged. 1996 K3500 6.5L, ( "F" Eng #141 cast block) NV4500, crewcab, dually,Diamond Eye 4" Turbo Back Exhaust w/2.5" Flo-Pro Crossover, AirDog II DF165 w/ tank sock,delete,TD-Max boost controller,OPS extension hose,Glow ... I have a 2015 Chevrolet Silverado 2500HD LTZ 4x4 with the venerable 6.6 liter LML Duramax diesel. I had a check engine light come on and checked it out to be... What is the Cost to Diagnose the Code P01F0 2016 GMC Sierra? Labor: 1.0. To diagnose the P01F0 2016 GMC Sierra code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type.Was bedeutet der Fehlercode P01F0? Das Zeichen "P" in der ersten Position des Diagnostic Trouble Code (DTC) steht für den Antriebsstrang, d. h. Motor und Getriebe (P steht für Powertrain) , "0" in der zweiten Position bedeutet, dass es sich um einen Allgemeiner Fehler nach SEA/ISO OBD-II (OBD2) DTC handelt. "1" in der dritten Zeichenposition in einem …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...10: Hněv afrustrace 89 Obrázek ... predmetu [ HNEV. vůči ... Obrázek č. 10: Hněv a frustrace Obtíže. https://is.muni.cz/th/p01f0/DP-Laznickova.pdf. Významné ...
Engine Code P01f0. Hello everyone. Our 2019 Acadia is producing a p01f0 code. I took it is and the shop said it passed all the tests at the time but he suggested we …. Mlb minnesota twins
2015 2500 check engine code P21DD. I have a 2015 Duramax only with a leveling kit. I've had the truck since new and it has been flawless. Only regular scheduled maintenance, no fuel additives or anything done, run like the factory intended. I knew it was only a matter of time for something to happen with the DPF, I got the code from the ...Run the engine through a complete operating temperature warm up (the thermostat should be fully open at 107°C (225°F). Pressurize the cooling system on a cold soak engine (after being warmed up to operating temperature). Inspect the suspect cylinder(s) with a blacklight borescope for evidence of the coolant dye.Flawless quality, they look like and feel as good as the OEM thermostats, took care of the P01F0 code for low engine temperatures. The wife is happy about the ...Jan 12, 2020 · well, I have the P01F0 code on my 2015 GMC Sierra 2500 Duramax 6.6 LML. I hear plenty about the thermostats, but I checked the ref voltage circuit for the ECT sensor and I have 10 kOhm to ground. I lo … read more Mar 22, 2021 · P01F0 code comes up replaced the sensor came back it heats up to 185 and doesnt overheat can't figure it out, 2015 2500 Duramax ... 4106 posts · Joined 2019. #58 · Jan 27, 2023 (Edited) This P0128 code and indication of an ECT sensor and/or failing thermostat have been showing up on other GM vehicles like the Colorado/Canyon and Camaro cars that use the same …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. ...2013 Silverado 5.3 Temperature Sensor Location. I changed out the thermostat so went ahead and switched out the temperature sensor to avoid have to drain coo...What is the Cost to Diagnose the Code P01F0 2016 GMC Sierra? Labor: 1.0. The cost to diagnose the P01F0 2016 GMC Sierra 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 ... Descripción del código DTC P01F0 El código de diagnóstico P01F0 OBD2 se refiere a un problema relacionado con el Sensor ECT (Engine Coolant Temperature) en el motor de un vehículo. Este sensor es un dispositivo que mide la temperatura del refrigerante del motor y se encuentra instalado en el bloque del motor, cerca de la caja del termostato.2015 Chevy Duramax LML 6.6L Failed inspection for P01F0 trouble code. I asked about this with another tech and he told - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website.P1407 EGR Air Intrusion In Exhaust Supply To EGR Valve - Read Our Article on EGR Valve Codes For Help With This Chevy Check Engine Light Code. P1408 Intake Manifold Pressure Sensor Circuit. P1409 EGR Vacuum System Leak - Read Our Article on EGR Valve Codes For Help With This Chevy Check Engine Light Code.Well, I have the P01F0 code on my 2015 GMC Sierra 2500 Duramax 6.6 LML. I hear plenty about the thermostats, but I - Answered by a verified GMC Mechanic. We use cookies to give you the best possible experience on our website.JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. P01F0 code 2015 Duramax, I've cleared the code multiple times. Chevy 2500 4X4, Just clearing the code with my code - Answered by a verified GMC Mechanic. To recap, code P0101 indicates a malfunction in the Mass Air Flow (MAF) sensor or circuit. The ECM of the Duramax calculates the MAF value. When it detects that the frequency signal from the MAF sensor is outside of the expected range, it stores the code. Let’s go over the code in more detail, so you get a clearer idea of how the code appears ....