If you're searching for how to fix the P0172 code, this code indicates that your engine bank 1 is running with too much fuel. Too much fuel might be related to a lot of fuel supply or insufficient air supply. Whatever the causes, all you need to do is confirm the issue by using an OBDII scanner then, either clean the MAF sensor or replace the ...The P0172 code is indicative of a System Too Rich (Bank 1) condition in the engine’s air-fuel mixture ratio. It signals that the Powertrain Control Module (PCM) has detected a richer than ideal air-fuel mixture in Bank 1 – the side of the engine with cylinder number one. This imbalance implies that there is too much fuel or too little air ... • P0172: Fuel System Rich • P026D: Injection Quantity Too High • P0300: Engine Misfire Detected • P2A00: HO2S Performance Sensor 1 Correction If you encounter such a situation,DO NOTreplace the fuel system as described in Service Bulletin #16-NA-102. Please perform the following fuel system flushing procedure prior to performing further Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.Common Reason: Code P0172 is often related to a vacuum leak. Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. Too much air and/or too little fuel results in the engine running lean setting P0171 or P0174 trouble codes, while too much fuel and/or too little air results in the ...P0172 and P0175. So I recently put in a new thermostat and coolant temp sensor. Afterwards, I figured I'd go ahead and change the engine/cabin filters. I have a scan tool so I ran it, all seemed ok. About 1-2 days later I got the above codes. I looked around and saw the right PVC valve tubing was cracked, so I tracked down a new one and put it …P0172 And P0175 Chevy Silverado Codes: Possible Reasons & Fixes. In short, P0172 refers to bank 1 having a rich fuel mixture to the engine. It’s the same for P0172 but for bank 2 instead. Both of these get …Greetings viewers. In this video I dove into a 2014 Chevy Express with the 5.3L engine having a check engine light illuminated and stored codes P0172 and P01...P0171 – Fuel Trim System Lean → Bank 1: P0171 indicates that the side of the engine with the first cylinder (Bank 1) is running lean. P0174- Fuel Trim System Lean → Bank 2: P0174 indicates that the side of the engine with the first cylinder (Bank 2) is running lean. On inline engines, this code is not available, since there is only one ...• P0172: Fuel System Rich • P026D: Injection Quantity Too High • P0300: Engine Misfire Detected • P2A00: HO2S Performance Sensor 1 Correction If you encounter such a situation,DO NOTreplace the fuel system as described in Service Bulletin #16-NA-102. Please perform the following fuel system flushing procedure prior to performing furtherOct 26, 2023 · P0172 and P0175. So I recently put in a new thermostat and coolant temp sensor. Afterwards, I figured I'd go ahead and change the engine/cabin filters. I have a scan tool so I ran it, all seemed ok. About 1-2 days later I got the above codes. I looked around and saw the right PVC valve tubing was cracked, so I tracked down a new one and put it on. This article will therefore deal with code P0171 as it applies specifically to GM vehicles. OBD II fault code P0171 is a generic trouble code that is defined as “System too lean – Bank 1” and is set when the PCM (Powertrain Control Module) detects an air/fuel mixture that is too lean on bank 1. Note that in the context of this code ...Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.The most common repairs needed to fix the P0171 engine code are as follows: Replacing the fuel pump. Replacing the fuel filter. Replacing the fuel pressure regulator. Replacing the powertrain control module. Replacing one or more injectors. Replacing one or more oxygen sensors. Replacing the mass air flow sensor. Repairing a vacuum leak.Customer Complaint: This 2019 Chevrolet Traverse with a 3.6 liter engine came into the shop with a complaint of a check engine light and stalling problem. The customer states that the vehicle will randomly shut off. The codes in this vehicle were: P0171 - Fuel Trim System Lean Bank 1. P0174 - Fuel Trim System Lean Bank 2.The ideal air/fuel ratio is 14.7:1 (14.7 parts air to one part fuel). Your vehicle’s fuel trim system manages the air/fuel ratio and adjusts it when the powertrain control module determines it’s necessary (it can range anywhere from …Indicator Lamp (MIL) Illuminated - DTCs P0300-P0308, P050D, P0171, P0172, P0174, P0175, P2099, P219A, and/or P219B Set Attention: This bulletin applies to V6 and V8 Gasoline Engines ONLY. Brand: Model: Model Year: VIN: Engine: Transmission: ... GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They …Jul 10, 2018 · 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. Does anyone know if the I can check to see if service update #06162 (virtual flex fuel sensor) was actually installed in my truck as GM says it ...Vehicles affected by P0172 trouble code are listed in Service Bulletin #PIP4783B. 2010-2012Buick Lacrosse 2.4L engine 2011 Buick Regal 2.4L engine 2012-2017 Buick Verano 2.4L engine 2012-2016 Chevrolet Captiva 2.4L engine 2010-2017Chevrolet Equinox 2.4L engine 2010-2017 GMC Terrain 2.4L engine ©, 2020 Rick MuscoplatTech Notes. The P0175 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0175 is set in along with the P0172 code, it is highly likely that the problem is caused by leaking fuel injectors. If there are no leaking fuel injectors, the next step is to replace the air filter and clean the Mass Air ...Difficulty: 1/5. Time required: 5 minutes. Tools Required: Piece of paper or tissue. Remove the engine cover and locate PCV valve. With the engine running at idle, hold a small piece of paper or tissue in front of port. If the paper is drawn to the port, vacuum is present and the PCV valve is faulty.Come along with Eric O. at the SMA shop as he has a look at this 2006 Chevrolet Silverado Flex Fuel with the engine light on and codes P0172 and P0175 Rich o... 2006 GMC Yukon with P0172 P0175 Here is the history: 2006 GMC Yukon 5.3L Code Z for flex fuel. Approx 107000 miles on the clock. I first had an evap issue P0449. I wound up having to replace the purge valve solonoid. During this time I also developed P0172 and P0449 codes. The P0449 code is now gone, and I am now trying to cor... I have a 2017 Cruze with the 1.4L turbo. Check engine light came on and when I checked the code, I initially had a P1101. I opened up the air filter box and cleaned it out, inspected the filter and MAF sensor, looked for any signs of damaged electrical wiring or hoses, etc. Decided to go ahead and order a MAF sensor and new air filter (not sure ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈===== How to Fix P0171 =====Engine Code P0171 Saving Repair...Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.Codes Related to P0172. While diagnosing DTC P0172, you may also run across these other DTCs: P0170 – Fuel Trim Malfunction (Bank 1) P0173 – Fuel Trim Malfunction (Bank 2) P0175 – Fuel System Too Rich (Bank 2) P0101 – Mass Air Flow Circuit Range / Performance. P0104 – Mass Air Flow Circuit Intermittent. P030x – Cylinder Misfire ...The My GM Rewards Card offers high earning potential, but it likely only makes sense if you want to redeem your points toward GM-related purchases. We may receive compensation from...Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.Engine light P0172-Fuel trim system rich (bank1) I removed my cold intake and installed back the stock. Seems new impalas aren't made for high air flow. I erased the code than 5 days later pops up again. So, went back and saw the MAF connector was lose, but if the connector was lose or a hose, the codes should start from P0101-P0103, why …P0171 definition: Bank 1 has too much air or not enough fuel. Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid damage to spark plugs, pistons, and catalytic converters. Diagnosis: It is important to complete the entire diagnostic ...Causes of Code P0172. There are several reasons why this problem could exist. The most common reasons include a faulty oxygen sensor or a dirty mass air flow sensor (MAF). In addition, here are some additional causes of throwing code PO172. Faulty fuel injectors leaking fuel into the combustion chamber.Mar 20, 2022 ... This 2018 GMC 5.3 was running rough and misfiring on all cylinders on bank 1. It had set a code for running rich on bank 1, bank 1 sensor 1 ...The P0172 code indicates that there is too much gasoline being detected in the exhaust gasses exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF), oxygen sensors, and manifold absolute pressure (MAP) to monitor the air-fuel ratio of the engine.Your car is equipped with a lot of engine sensors that are essential to keeping your vehicle running. The OBD-II code P015b indicates the PCM has detected a delayed response from the bank 1 sensor 1 oxygen (O2) sensor.If your scanner logs this code, the guide below will help you address it.Jul 23, 2018 · Start by taking a look at the vacuum lines and seeing if you have a leak. The most common causes of P0171 are a bad Oxygen sensor, a vacuum leak, or a dirty MAF sensor. Definition. P0171: Fuel Trim System Lean (Bank 1). Symptoms. Check engine light, decreased fuel economy, misfire, hard to find idle. Common Causes. 1 hour ago · キーウを訪れていたブリンケン米国務長官は15日、 ウクライナ に総額20億ドル（約3100億円）の資金を提供する新たな軍事支援を発表した ...Jul 14, 2018 · It indicates that your Chevy Cruze is running lean on the bank one side. It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most common causes of P0171 are the purge valve or a vacuum leak. Definition. P0171: Fuel Trim System Lean ... The Hummer H3 comes standard with the Homelink system. This system consists of a transmitter and a small control panel that you can program to your home's garage door. This allows ...Oct 26, 2023 · P0172 and P0175. So I recently put in a new thermostat and coolant temp sensor. Afterwards, I figured I'd go ahead and change the engine/cabin filters. I have a scan tool so I ran it, all seemed ok. About 1-2 days later I got the above codes. I looked around and saw the right PVC valve tubing was cracked, so I tracked down a new one and put it on. Gm’s 1.4L turbocharged 4-cylinder engine, commonly found in the Chevy Sonic, Cruze and Buick Encore, has a well-known issue resulting in a lean code, P0171, ...P0172 is a diagnostic trouble code (DTC) that indicates a fuel system rich condition in the Chevy Equinox. The code is triggered when the powertrain control module (PCM) detects a fuel-to-air ratio that is too rich for efficient engine operation. This condition can be caused by a variety of factors, and it is important to identify and repair ...Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.Dec 4, 2020 · P0172 GM Service Bulletin #18-NA-246 — TSB Fix P0172 GM Service Bulletin #18-NA-246. GM has issued a service bulletin #18-NA-246 to address a P0172 code on the vehicles listed below. This Bulletin applies to the vehicles that have fuel enriched engine oil due to short driving intervals. The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. 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 filter and clean the Mass Air Flow (MAF) Sensor.On rare occasions, some customers may experience a hard start cold, brief rough running on cold start, black exhaust color, and/or SES light. If a SES light is experienced, DTCs P0172 and/or P0175 may be stored. If driveability symptoms are experienced, they will generally diminish within 1 minute of start up.Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.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. On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes. This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses ... Sep 28, 2023 · A P0172 trouble code indicates that the system is too rich at bank 1. That means that too much fuel is used in the combustion process. Bank 1 shows that the …Code Number Code Description Related Codes; P0171: System Too Lean (Bank 1) P1101 - Intake Air Flow System Performance P2097 - Post Catalyst Fuel Trim System High Limit P2277 - Barometric Pressure ...Te suministramos todo lo que necesitas saber sobre el código DTC P0172: ️ Descripción, ️ causas, ️ síntomas y ️ posibles soluciones.LEER SOLUCIÓN DEL CÓD...What can cause P0172/P0175 Rich DTC? The Delphi Training Series breaks it down for you. To see the whole webinar, visit https://youtu.be/PRD7Z-gUUw4.For more...Your fuel system can be a major source of issues. A failed fuel pressure sensor, pump, or clogged fuel filter can cause the P0171 trouble code. Anything that restricts the fuel pressure, or causes an obstruction within the system will prevent the engine from getting the fuel it needs . Vacuum Leak.P0172 is a time-consuming and labor-intensive repair job. However, the cost of the replacement parts is fair enough. Here are the probable parts you will replace to fix the problem. Clean mass air flow sensor $75 to $100. Replace mass air flow sensor for $150 to $200. Vacuum leaks $100 to $150.Possible solutions include: Inspect all vacuum and PCV hoses, replace if necessary. Cleanthe MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner.P0172. I did a search on this code, and found the service bulletin regarding dirty injectors. I also googled it and came up with a couple hits regarding dirty MAF or stuck canister purge valve. The deal is, I've got an 06 3.5 that was having evap leak codes as well as this one. I replaced the canister vent solenoid, and the evap leak codes are ...Aug 21, 2022 · The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. 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 filter and clean the Mass Air Flow (MAF) Sensor. P0172 System Too Rich Bank 1. The P0172 Chevy code can be caused by a leaking fuel injector in the engine’s intake side. Excess fuel will go into the cylinders altering the air-fuel mixture. The oxygen sensor detects the rich condition in the cylinder, and the ECU sends the P0172 code. The P0172 code is a generic OBD-II trouble code and is ...3 days ago · A code P0172 may mean that one or more of the following has happened: The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can …The P0172 code appears when the ECU detects insufficient fuel in the combustion mix. Several symptoms will point that there is a problem with a too-rich mix condition in your engine: Check engine light is on. Fuel consumption is increased. Black smoke coming from the exhaust. The strong smell of fuel from the exhaust.What can cause P0172/P0175 Rich DTC? The Delphi Training Series breaks it down for you. To see the whole webinar, visit https://youtu.be/PRD7Z-gUUw4.For more...Aug 21, 2022 · The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. 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 filter and clean the Mass Air Flow (MAF) Sensor. Code P0172 indicates Bank 1 of the engine has a rich fuel mixture. P0175 indicates Bank 2 of the engine has a rich fuel mixture. Engine Bank 1 is the same side of the engine as Engine Cylinder 1. Engine Bank 2 is the opposite side of the engine.Definition. Both of these codes are generic, which means they have the same meaning regardless of the vehicle. P0171- Fuel Trim System Lean → Bank 1: P0171 indicates that the side of the engine with the first cylinder (Bank 1) is running lean. P0174- Fuel Trim System Lean → Bank 2: P0174 indicates that the side of the engine with the …Code P0300 is often related to bad spark plugs or spark plug wires but could be caused by a number of issues relating to ignition and the air-to-fuel ratio in the cylinders. When the air/fuel mixture in your cylinder (s) is not able to burn normally and the difference is severe enough, it may cause a misfiring cylinder problem in your vehicle ...P0172 and P0175. So I recently put in a new thermostat and coolant temp sensor. Afterwards, I figured I'd go ahead and change the engine/cabin filters. I have a scan tool so I ran it, all seemed ok. About 1-2 days later I got the above codes. I looked around and saw the right PVC valve tubing was cracked, so I tracked down a new one and put it …The P0171 code indicates that the oxygen (O2) sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is too lean to be corrected. The O2 sensors have the ability to correct a fuel mixture of +-15%. If it needs to be corrected more than that, the P0171 code will be stored.Gm gmc buick cadillac motors general chevy cycle company drive brand round complete september led global supply resist electric 2017 buick cascada 1.6l turbo P0171 lean too system sensor bank gm fuel troublecodes located where maf 2021 97 buick century 3.1 code p0401 fix ... position actuator for a 2015 buick verano is it the How i …Difficulty: 1/5. Time required: 5 minutes. Tools Required: Piece of paper or tissue. Remove the engine cover and locate PCV valve. With the engine running at idle, hold a small piece of paper or tissue in front of port. If the paper is drawn to the port, vacuum is present and the PCV valve is faulty. • P0172: Fuel System Rich • P026D: Injection Quantity Too High • P0300: Engine Misfire Detected • P2A00: HO2S Performance Sensor 1 Correction If you encounter such a situation,DO NOTreplace the fuel system as described in Service Bulletin #16-NA-102. Please perform the following fuel system flushing procedure prior to performing further P0171 is an OBDII trouble code. The code technically stands for: Fuel Trim System Lean Bank 1. The code is thrown when the oxygen sensors detect that there’s not enough oxygen in the exhaust system. This is commonly referred to as a “lean” condition. The vehicles ECM will add more fuel to the mixture in order to bring the air fuel mixture ...Oct 26, 2023 · P0172 and P0175. So I recently put in a new thermostat and coolant temp sensor. Afterwards, I figured I'd go ahead and change the engine/cabin filters. I have a scan tool so I ran it, all seemed ok. About 1-2 days later I got the above codes. I looked around and saw the right PVC valve tubing was cracked, so I tracked down a new one and put it on. GM provides two separate discounts to the family members and friends of GM employees. To receive the Family First discount, a purchaser must be a family member of a GM employee. Em...May 29, 2022 · The P0172 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0172 is set in along with the P0175 code, it is …First, we have to establish whether or not the P0171 code is active. You can have this done by most parts stores or by a quick scan from a local shop. If the only stored code is P0171, we can ...Jan 21, 2023 ... thank you for watching!!!!! If this video was helpful to you and if you would like to place a donation, here is my Venmo and PayPal ...The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. 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 filter and clean the Mass Air Flow (MAF) Sensor.Come along with Eric O. at the SMA shop as he has a look at this 2006 Chevrolet Silverado Flex Fuel with the engine light on and codes P0172 and P0175 Rich o...Jun 25, 2023 · Causes: Common causes include: - Faulty Air/Fuel ratio sensor. - Failed or dirty fuel injectors. - Engine oil level is too high. - Presence of fuel in engine oil due to short driving intervals. - Faulty Mass … CODE P0171 EXPLAINED ON CHEVY, CHEVROLET, GMC, BUICK, CADILLAC ENGINE LIGHT ON Great Car Scanner: https://amzn.to/2QmNBri Check out our Amazon Store for t... If you're searching for how to fix the P0172 code, this code indicates that your engine bank 1 is running with too much fuel. Too much fuel might be related to a lot of fuel supply or insufficient air supply. Whatever the causes, all you need to do is confirm the issue by using an OBDII scanner then, either clean the MAF sensor or replace the ...Definition. When P0172 is detected, it means that the exhaust system is too rich in bank one. This code may be accompanied by P0175, which monitors bank two. Meaning. …Dec 5, 2023 · The code P0107 in Chevrolet vehicles refers to a problem with the Manifold Absolute Pressure (MAP) sensor. This sensor is responsible for measuring the pressure inside the intake manifold and providing data to the engine control module (ECM) to determine the correct air-fuel mixture. When the ECM detects that the MAP sensor is not providing ... The numbers. Investors looked past the one-time charges that dragged down the headline numbers, and the underlying business looked strong. If you want to be a stickler for account...Diagnosing trouble codes: P0172 (System too Rich Bank 1) and/or P0175 (System too Rich Bank 2) can be a challenge on your GM 4.3L, 5.0L, 5.7L equipped GM pick-up, van, SUV or mini-van. What complicates getting to the bottom of what's causing these two codes to pop up, is that they don't accuse one specific component as being bad.P0172 is a diagnostic trouble code (DTC) that indicates a fuel system rich condition in the Chevy Equinox. The code is triggered when the powertrain control module (PCM) detects a fuel-to-air ratio that is too rich for efficient engine operation. This condition can be caused by a variety of factors, and it is important to identify and repair ...
It is also one of the most common codes. The most common causes of P0171 are a bad Oxygen sensor, a vacuum leak, or a dirty MAF sensor. P0171: Fuel Trim System Lean (Bank 1). Check engine light, decreased fuel economy, misfire, hard to find idle. Dirty MAF sensor, vacuum leak, O2 sensor.. Trevor kingston
Chevrolet Traverse 2012-2018 3.6 LFX, 3.6 LFY. GMC Acadia 2012-2017 3.6 LLT. GMC Canyon 2015-2016 3.6 LFX. GMC Terrain 2015-2017 3.6 LFX. Cause of P0171, P0174 and check engine light. GM has determined that a vacuum leak in the foul air tube, intake manifold or purge valve may be causing the P0171, P0174 condition. Diagnose …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix P0172 =====Engine Code P0172 Saving Repair P...The FIXD wireless OBD2 scanner and free app for iPhone and Android translates your check engine light into plain English so you can rest easy. In this video,...P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes. This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses ...intake manifold and gasket. valve cover. O2 sensor on bank 1. and it the code still comes on. A code P0171 may mean that one or more of the following has happened: The MAF (Mass Air Flow) Sensor is dirty or faulty Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled.Jan 5, 2016 ... Add a comment... 21:37 · Go to channel · GM GDI RICH codes P0172 P0175 (Diag & Repair). Pine Hollow Auto Diagnostics•81K views · 10:48 &mid...This article will therefore deal with code P0171 as it applies specifically to GM vehicles. OBD II fault code P0171 is a generic trouble code that is defined as “System too lean – Bank 1” and is set when the PCM (Powertrain Control Module) detects an air/fuel mixture that is too lean on bank 1. Note that in the context of this code ...Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.Nov 21, 2018 · Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich. Greetings viewers! In this video I highlight a 2017 Chevy Trax Premier 1.4L equipped AWD vehicle which arrived with the customer complaint of hard starting a....