p0171 and p0174. Guys, I need some help here. I have a 2004 Silverado, 2500HD 4wd. The knock sensors were bad so I replaced them. I got a new intake gasket when I put it back together and ever since I've been blowing these two codes. When I keep the engine under 2K RPMs it is fine, but under a load it loses power and starts to backfire.Dec 15, 2022 · How to fixes a Chevy Silverado 5.3L engine with a P0171 Code System Too Lean (Bank 1)Read here for more information: https://www.backyardmechanic.org/fixes-f... 13 posts · Joined 2017. #17 · Jan 2, 2018. I put in a new Delphi fuel pump and Maf sensor.The P0171 and P0174 codes went away.It could have been the Maf sensor or the crappy K&N intake might have been leaking.The fuel pressure is still low 50 with a new pump.I'm getting P0300 code at idle.When I hooked scanner up it's misfiring on 1,3,5,7.So a chaffing or rub-through on a wiring harness can cause multiple trouble codes due to grounding on the 5-volt reference signal circuit. Check wiring harness to correct Chevrolet Silverado P0106, P0107, P0174. GM can’t seem to get their act together when it comes to protecting the integrity of wiring harnesses.May 14, 2018 · P0171, P0174, P0300. Hello everyone, first time on this forum but my trucks got me stumped. Im trying to get my truck to pass emissions, but I've got DTCs and that's an automatic fail where I live. The previous owner sold it because he couldn't get it to pass emissions either, so far I've changed the intake manifold gaskets and MAF sensor, the ... Oct 18, 2017 · 6 years 6 months ago - 6 years 6 months ago #13991. 2008 Chevy Silverado 2500hd 6.0 P0174 and a p0171 was created by drogan. 2008 Silverado 2500 6.0 has a p0171 and a p0174. Intake was smoked with no leaks truck came to me with 8 new injectors a new fuel pump new map and mass air flow sensor and new intake gaskets. I have been getting an code for P0171 and P0174 for a few months now. It comes and goes away all the time ... 2001 Chevy Silverado Z71 5.3 with almost 260,000 miles Performance Tuned, Carven R, Ported Throttle Body. 1971 C10 350V8, Turbo 350 Trans with True Dual Flowmaster Original 40 Series, Longtube Headers. Save Share.I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. ... A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! ...What Causes the P0174 Code? The most common causes of the P0174 code are the following: Vacuum leak due to damaged intake manifold gaskets or punctured vacuum and positive crankcase ventilation (PCV) hoses; Malfunctioning mass airflow (MAF) sensor; Clogged fuel filter; Failing fuel pump; Clogged fuel injectorsJuly 2, 2021 by Jason. P219B is a generic OBD2 trouble code. This code indicates that your Chevy Silverado’s air/fuel ratio is out of balance (too rich or too lean) on the bank 2 side of the engine in question. Your Silverado is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are ...2002 Chevy Silverado CHECK CODE P0171 AND P0174. Home. Chevrolet. Silverado. Trouble Codes. P Codes (Powertrain) P0100 - P0199. P0174.The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1...The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 code, it is highly likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the Mass Air Flow (MAF) Sensor.I had posted on December the 1st in anothers post that I also got the P0171 and P0174 codes, both banks lean. Cold Weather Probs ... Chevy Silverado and GMC Sierra Forum. A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, …Maintaining your Chevy Silverado is essential for ensuring peak performance and reducing the risk of costly repairs. A professional tune-up is a great way to keep your vehicle running safely and reliably. This article will discuss the benefits of a professional tune-up for your Chevy Silverado with trouble code P0121.I have a 2004 Silverado Z71, 5.3 with 154K miles. Other than this problem the ruck runs great. I had the fuel lines and fuel pump replaced two months ago and after that, I started to get the P0171 and P0174 (bank 1 and 2 lean) and the long term fuel trims "LTFT" are 18-25% (both) There were no signs of issues cold or warm.P0157 Causes: Chevy Silverado. Here are the most common issues that cause the P0157 code in the Chevy Silverado. They are presented in order (somewhat) of most to least likely to cause the problem. Bad Oxygen Sensor– The O2 sensor itself is one of the most likely reasons that P0157 is triggering your service engine soon light. …In this video I have a look at a 2008 Chevrolet Silverado 1500 5.3 that came in with codes P0171 and P0174 indicating that the engine is running lean. It doe...Then I moved to the intake gasket to fix the P0171 and P0174 codes. I figured this was the problem, but before going through the effort of changing them I decided to smoke test my intake. Unfortunately a smoke machine is very expensive so I had to make my own from hardware store supplies (took ~$10). This worked like a charm.Chevrolet Silverado 1500 (New Model) 2019 2019 Equipped with 5.3L or 6.2L Engine (RPOs L84, L87) All GMC Sierra 1500 (New Model) Involved Region or Country North America Condition Important: If the customer did not bring their vehicle in for this concern,DO NOT proceed with this EI. Some customers may comment one or more of the following condition:The 2015 Chevy Silverado 1500 is a dependable and powerful truck that can handle all your needs. Whether you’re hauling heavy loads, towing a trailer, or just running errands aroun...I have been getting an code for P0171 and P0174 for a few months now. It comes and goes away all the time ... 2001 Chevy Silverado Z71 5.3 with almost 260,000 miles6 years 6 months ago - 6 years 6 months ago #13991. 2008 Chevy Silverado 2500hd 6.0 P0174 and a p0171 was created by drogan. 2008 Silverado 2500 6.0 has a p0171 and a p0174. Intake was smoked with no leaks truck came to me with 8 new injectors a new fuel pump new map and mass air flow sensor and new intake gaskets.Nov 22, 2018 · Oxygen Sensor – The P0175 code is thrown when the B2S1 O2 sensor does not register the right amount of oxygen in the exhaust. The computer will still adjust the air/fuel mixture to compensate. A bad O2 sensor will show a lean mixture more often, though. Mass Air Flow Sensor – Your Silverado’s mass air flow sensor calculates the volume of ... I have a new body style 2007 GMC sierra vortec max and recently have been getting P0171/P0174 lean conditions in bank 1 and bank 2 and I cant figure it out. SYMPTOMS: Check engine light. Stabilitrak/Traction control off/service randomly comes on, mostly at a stop or lower speeds. Stall/sputter @ idle, especially if started with the …The following are the most common causes of the P0174 code. Faulty mass airflow (MAF) sensor. Blockage in the fuel filter and fuel injectors. The fuel pump is getting weak. Weakening fuel pressure regulator. The vacuum connector or PCV line may have cracks or damage. Defective oxygen sensor. Issues with PCM.The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1...Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Silverado’s engine is running lean. The sensor on or right after the exhaust manifold is typically the sensor that reports the lean condition. If it is malfunctioning, it can cause a false P0171 code. Swap Test.Code P0174 applies to V engines as they will have two banks, Bank 1 and Bank 2. When the code says that the Fuel System is "too lean," it means that the computer has been adding more and more fuel, which is called Long Term Fuel Trim. Ideally, the Long Term Fuel Trim should be close to 1 to 2 percent. When a code P0174 is set, it means that the ...Chevy Silverado Forum (GMC Sierra) P0171, P0174, P0420.. Help!! Jump to Latest Follow 25K views ... I have a 2000 Silverado 5.3 with the codes P0171, P0174, P0420. I am completely stumped right now. My mechanic replaced the intake manifold gasket, which was blown, as well as the MAF.The most common fix for P0420 in the Chevy Silverado is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Silverado into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. Here’s a good P0420 diagnostic order for the Chevy Silverado: 1. Check for Other CodesIt’s official: a fully electric Chevy Corvette is coming — with new battery technology to boost its range, acceleration and efficiency. When it arrives, the battery-electric sports...Engine Code P0171, P0174. Jump to Latest Follow ... Chevy Silverado EV Forum 2K+ members. Home. Forums. Truck Talk. Engine. Vortec 5300 5.3L V8 ...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.Truck Talk. Engine. Vortec 5300 5.3L V8How to fix a Ford P0174 engine code: Fuel Injection System Too Lean Bank 2A lean condition exists if the engine is getting more air than fuel in the cylinder...P0138 is a common OBDII code that occurs in many vehicles, including the Chevy Silverado. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0138.Apr 12, 2024 ... I'm going to go over some common issues causing the P0171 and P0174 error codes in Chevy and GM vehicles, indicating a system too lean in ...Mar 1, 2024 · 8 posts · Joined 2024. #1 · Mar 1, 2024. Hello, 2004, 2500HD, 6.0L, 4X4 with 131,000 miles all original no after market modes. I have P0171 and P0174 codes. My effort. New -. Fuel Tank Pressure Sensor, Gas Cap,Canister Purge Valve, Evap canister vent solenoid, fuel pump (55psi running), Mass flow sensor, air filter. Basically every item new ... Sold - 2017 Silverado LTZ - Diablo i3, Airaid MIT, E2 Catch Can, 5% Tint, 2.25" Readylift w/ucas, 17x8.5 Icon Alloy Rebound w/ LT285/70r17 Falken Wildpeak, N-fab RS Steps, Borla Xr-1 Cat Back Save ShareSep 27, 2009 · The following diagnosis might be helpful if the vehicle exhibits the described symptoms. Check Engine Light with a P0300 due to 2 - 4 cylinders misfiring on the same bank of the engine. DTCs P0171, P0172, P0174 or P0175 may also set for the misfiring bank. Perform a fuel injector balance test for all 8 cylinders. The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module has detected an incorrect gear ratio or neutral condition when the low and reverse clutch and the 4-5-6 clutch is commanded ON. This condition must occur 3 times. P0796 2017 Chevrolet Silverado Code - Pressure Control Solenoid Valve 3 Stuck Off.P0171 2016 Chevrolet Silverado Code - Fuel Trim System Lean Bank 1 - Code Popularity: 743 Views - Repair Importance Level: 3/3 - Repair Difficulty Level: 3/3. ... If the P0171 is set in along with the P0174 code, it is highly likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air ...I have a 2004 Silverado Z71, 5.3 with 154K miles. Other than this problem the ruck runs great. I had the fuel lines and fuel pump replaced two months ago and after that, I started to get the P0171 and P0174 (bank 1 and 2 lean) and the long term fuel trims "LTFT" are 18-25% (both) There were no signs of issues cold or warm.2004 Chevy Silverado 1500Z71 5.3 Vin ***** this truck has 2 codes P0171 and P0174 I done some testing on this truck fuel pressure key on is 56psi fuel pressure at idle 1500 rpm 62 psi MAF … read moreA fundamental tool in resolving the P0446 code in Chevy Silverado is the OBD-II scanner. In essence, this scanner retrieves the DTC (Diagnostic Trouble Code) from the engine control unit (ECU), offering further data on engine parameters to analyze the cause-effect relationship of the problem. It helps in identifying anomalies within the EVAP ...Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Silverado’s engine is running lean. The sensor on or right after the exhaust manifold is typically the sensor that reports the lean condition. If it is malfunctioning, it can cause a false P0171 code. Swap Test.Dec 16, 2008. #1. I have a 2002 Avalanche 1500 with 90,000 miles. Mods include KN filter, Hypertech Power Programmer. Lately the truck has been running VERY rough, throwing the P0171, P0174 and P0300 codes, being way down on power and getting terrible mileage. After doing extensive research here, I checked the O2 sensors, injectors, and did a ...The generic description for the P0174 trouble code is System too lean, bank 2, which effectively means the engine is getting too much air or insufficient fuel. As a …Jun 14, 2011 ... ... P0174 codes Slight Rough Idle ... Causes and Fixes Chevrolet GMC P0174 Code: System Too Lean (Bank 2) ... 2007 Chevy Silverado 5.3L P0171 and P0174!Chevrolet Silverado 1500: I have lean codes on a 2001 chevy. I have lean codes on a 2001 chevy silverado motor is the 4.8 codes are p0174 and p0171. I've changed the valve by tank the valve on the top … read more. ZZDaryl. Lead Auto Tech.Engine Code P0171, P0174. Jump to Latest Follow ... Chevy Silverado EV Forum 2K+ members. Home. Forums. Truck Talk. Engine. Vortec 5300 5.3L V8 ...A P1174 & P1175 trouble code means that your air to fuel ratio is either running too lean or too rich. Engines will have two banks. In traditional V-shaped engines, the 2-4 cylinders (depending on whether it is a V4 or V8, etc.) on the left side are considered “Bank 1” and the cylinder on the left are considered “Bank 2”.If rough idle (I also got P0300, with P0171, P0174 codes) 1. Check the fuel pressure regulator on the drivers side fuel rail by pulling the vacuum line off. (It is bad if wet with fuel) 2. Check EGR valve is working properly, gasket is good, and the tubes don't have a leak with carb cleaner.Jun 2, 2021 ... This 2015 GMC was brought in due to rough idle and the MIL on. Scan retrieved codes P0171 and P0174. Problem was under reporting MAF sensor ...Customer: 2003 Chevy Silverado CK Engine Code P0171 and P0174 THIS IS A FUEL SYSTEM LEAN BANK 1 AND 2 WHAT IS THE FIX FOR THIS TROUBLE CODES. Specialities include: Dog Veterinary, Cat Veterinary, Bird Veterinary, Large Animal Veterinary, Small Animal Veterinary. Thanks for using Just Answer.Trouble Code - P0171, P0174. Jump to Latest Follow ... I have code 0174. Brand new 02 sensors, brand new maf. I have a 2009 chevy silverado. Save Share. Like. 21 - 22 of 22 Posts. 1 2. ... A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, …Dec 15, 2022 · How to fixes a Chevy Silverado 5.3L engine with a P0171 Code System Too Lean (Bank 1)Read here for more information: https://www.backyardmechanic.org/fixes-f... Yes, a vacuum leak can cause P0507 in a Chevy Silverado. Vacuum leaks can lead to an increase in the engine’s idle speed, as the engine’s computer tries to compensate for the extra air entering the system. This can result in the P0507 code being triggered. It’s important to inspect and repair any vacuum leaks in your vehicle to resolve ...P0171 Code Chevy Silverado. P0171 is a common trouble code for a Chevy Silverado with an engine that is running lean. This can be caused by a number of different things, but the most common cause is a vacuum leak. ... P0174 Code Chevy. If your Chevy is displaying a P0174 code, it means that the engine is running too lean. This can be …Test drive Used Chevrolet Silverado 1500 at home in Ashburn, VA. Search from 489 Used Chevrolet Silverado 1500 cars for sale, including a 2011 Chevrolet Silverado 1500 LT, …Apr 5, 2019 · A P0174 is a code that says it all. Something is wrong with the exhaust, but until its fixed the car will expunge more fuel. However, what if it was the oxyg... Dec 7, 2019 · 182 posts · Joined 2015. #3 · Dec 7, 2019. 171 and 174 are lean codes both banks as you already know. you need to smoke test the intake system to find the leak. There are a few other reasons that can cause these codes such as a dirty maf sensor, weak fuel pump. Try looking at the brake booster vacuum hose for leaks. 1. Check For Other Codes. Additional codes can offer critical info about your Silverado’s condition. Rarely does P0175 Chevy show up alone (if it does look for a vacuum leak, bad O2 sensor, or dirty MAF).. 2. Spot The Weird Odor. While the engine operates, a strong gas smell could be coming from a leaky injector or a fault with fuel regulation.Chevy silverado 2006 4.3 stalling Codes p0118 p0174 p0171 - Answered by a verified GM Mechanic We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.Mar 5, 2021 · So today I was driving my 04 GMC Sierra 1500 4.8L V8 and the check engine light started blinking and it began to misfire. Used a code reader and got codes P0101 MAF Sensor Performance, P0171 Fuel Trim System Lean Bank 1, P0174 Fuel Trim System Lean Bank 2, and P0300 Engine Misfire Detected. I cleaned the MAF sensor and the problems still persisted. Dec 16, 2008 ... I took it to autozone and had it computered, and it showed a P0171 and P0174 code. Their print out suggested the MAF was bad. After putting ...I have a new body style 2007 GMC sierra vortec max and recently have been getting P0171/P0174 lean conditions in bank 1 and bank 2 and I cant figure it out. SYMPTOMS: Check engine light. Stabilitrak/Traction control off/service randomly comes on, mostly at a stop or lower speeds. Stall/sputter @ idle, especially if started with the …Test drive Used Chevrolet Silverado 1500 at home in Ashburn, VA. Search from 489 Used Chevrolet Silverado 1500 cars for sale, including a 2011 Chevrolet Silverado 1500 LT, …Failed or Faulty Oxygen Sensor (bank 1, sensor 1) Sticking/Plugged or Failed Fuel Injector. Low Fuel Pressure (possible plugged/dirty fuel filter!) Exhaust Leak between Engine and first Oxygen Sensor. Possible Solutions: A lot of Times, Cleaning the MAF Sensor and Finding/Fixing Vacuum Leaks fixes the Problem.Sold - 2017 Silverado LTZ - Diablo i3, Airaid MIT, E2 Catch Can, 5% Tint, 2.25" Readylift w/ucas, 17x8.5 Icon Alloy Rebound w/ LT285/70r17 Falken Wildpeak, N-fab RS Steps, Borla Xr-1 Cat Back Save Share