Gm p0172-00 - Aug 29, 2018 ... ANÁLISIS: P0172 CHEVROLET - Sistema de Entrega de Combustible Rich Banco 1 APREDEREMOS A RECONOCER ESTA CONDICION, identificar valores y ...

 
Sep 8, 2023 · Coming across a code P0172 essentially signals that your engine is drowning in too much fuel, a problem that wastes gas and risks damage. Keep reading to learn …. How to reset chevy infotainment system

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 further The method to fix P0172 varies depending on the underlying cause. Here are some potential fixes: Replace a faulty O2 sensor. Clean or replace the MAF sensor. Clean or replace the fuel injectors. Replace the fuel filter or fuel pressure regulator. Repair any vacuum leaks in the engine. Replace a failed fuel pump.How to Fix Code P0171. Addressing code P0171 is crucial to maintain your vehicle's performance and fuel efficiency. While some causes may require professional attention, there are steps you can take to diagnose and potentially resolve the issue on your own: 1. Check for Vacuum Leaks: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.Keep an eye on the oxygen sensor. Tip 1: Regular maintenance is key, and that includes keeping an eye on that air filter. A clogged air filter can cause the fuel system to run rich, which can trigger the P0172 code. Make sure to replace that air filter every 12,000 miles or 12 months, whichever comes first. 2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order. Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Encore’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.To keep the engine operating properly, the powertrain control module (PCM) attempts to compensate for the lean state by injecting more gasoline into the mixture in an attempt to maintain the proper 14.7:1 ratio. When these modifications become too large, the Chevrolet P0171 code is activated. What causes P0171 in a Toyota?GM said Wednesday that it will postpone its upcoming reveal of a GMC-branded electric Hummer due to the COVID-19 pandemic. The Hummer EV debut, which was scheduled to occur May 20,...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 …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. 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.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 …One of the most common causes of the P0171 engine code is a fuel system leak. When your fuel system leaks, more air and less fuel will enter the engine's cylinders. This results in your engine running lean because it can't get the necessary amount of fuel. Another problem with the fuel system is clogged fuel injectors.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 ...Problem:-Getting Check Engine Light Fault Code P0172 Fuel Trim System RichSymptoms:- - Smell Your Engine oil from your dip stick you will notice a mixture of... 2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order. Dec 15, 2018 ... Comments49 ; 2014 GM Truck 5.3 MIL on P0172, P0175. Phillip Bailey · 11K views ; GM 5.3 6.2 P0172 P0175 Fuel Trim Rich Diagnosis And TSB.While performing maintenance on your car, you may disconnect the radio from the battery in your GM vehicle. GM cars contain Delco radios that are protected by Theftlock, which lock...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 …The trouble code “P0172 system too rich” means there is too little oxygen in the exhaust. This error code is triggered by an oxygen sensor in bank one, the side of the engine with ...Jan 23, 2015 ... but the hard to start is still there along with the p0172 code. I have a guess that it could be my o2 sensor. I had a hole in the exhauset ...What does the P0171 code mean? A Code P0171 or system too lean bank 1 means either too much oxygen or too little fuel in the exhaust. This is a ‘lean’ condition or a ‘low fuel trim’ code. The P0171 OBD-II code indicates that the fuel system on the first bank of the engine is weak or that a vacuum leak exists near this side of the engine. A lean state happens …16 hours ago · 大麻取締法違反の罪に問われたレゲエ・ミュージシャンの米田洪二被告(39)の判決公判が15日、名古屋地裁岡崎支部であった。伊藤昌代裁判官は ... P0171 is a common fault code that indicates a lean condition on Bank 1 of the engine. The symptoms of P0171 can include poor fuel economy, rough idling, or lack of power. The underlying causes of P0171 can include a faulty sensor, restricted air intake, exhaust leaks, failed catalytic converter, or electrical issues. • 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 The most common cause of the P0171 code – and the P0170 and P0173-P0174 codes – is unmetered air entering the combustion system. Most of the time, this happens due to faulty or dirty mass ... Apr 25, 2020 · WATCH PART 2 REPLACING THE HIGH PRESSURE FUEL PUMP! Next video on the channel!In this video we cover GM Vehicle’s Fault Code troubleshooting for P0172 and P0... Sep 22, 2016 · 891. 183K views 7 years ago. In this video we discuss the most common cause of a GMC or Chevy flex fuel equipped vehicle with a check engine light illuminated …A P0172 code indicates that the fuel system is excessively rich or inadequate air in the engine’s air-fuel mixture. The code appears when there is too much fuel in the exhaust gas flowing from the combustion chamber. The code could imply the following. A vacuum leakage near the engine. The fuel system is operating weak.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 …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 …Oct 21, 2020 · =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix P0172 =====Engine Code P0172 Saving Repair P... On a good WOT pull the pressure climbed to 1800 - 2125 psi range. When coasting to a stop ( foot off the gas ) the fuel rail pressure briefly dropped to 280-350 psi range then returned to 425-440 range. On a cold start the pressure was 1800-2050 for the first 30 seconds or so.. Hope these number can help you out. J.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.A torn crankcase pressure control diaphragm would cause the tissue to be held against the port (smoke would be continuously drawn in) due to internal engine vacuum leaking through the diaphragm. 5. Check to see if there is vacuum at the PCV vent at the front of the PCV valve by placing a piece of tissue near it.Sep 28, 2023 · 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. Jun 24, 2020 ... C6 Corvette ZR1 & Z06 - P0172 Fuel Rich Code - Anyone else have issues with P0172 Fuel Rich Codes? 2006 Z06 with 40000 miles with a ... The most common cause of the P0171 code – and the P0170 and P0173-P0174 codes – is unmetered air entering the combustion system. Most of the time, this happens due to faulty or dirty mass ... 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 ...The oxygen sensors are always monitoring how much fuel and air is in the mixture. If there is a vacuum leak, it can cause excess air supply to the engine bay. Then, the O2 sensors will detect a rise in air. Also, broken oxygen sensors can trigger the P0171 code. They can do a false readout, which will trigger a code.May 29, 2022. I have the EXACT same issue as OP. 2016 GMC Duramax Denali bone stock. Bought it last December (2021) with 67,000 miles and a 4 year extended bumper to bumper warranty. Within the first few months of getting the truck I pulled my boat up a grade making a pass by a few trucks and it threw the P2263 and P0299 codes with the reduce ...This particular Cruze is a 2012 1.4 Turbo but this procedure is very similar to allot of Chevy ans other years Cruze's.Recently I had been felling the car ru...Chevrolet Cruze 2016 2019 1.4L (RPO LE2) Equinox 2018 2020 1.5L (RPO LYX) Malibu 2016 2020 1.5L (RPO LFV) Trax 2019 2019 1.4L (RPO LE2) Volt 2016 2019 1.5L (RPO L3A) GMC Terrain 2018 2020 1.5L (RPO LYX) Involved Region or Country North America, China, Thailand, GM Korea, Middle East, Israel, Europe, Brazil, Chile, Colombia, Peru, South …The fuel rail pressure sensor keeps the powertrain control module (PCM) aware of the pressure levels in the fuel rail, so that the computer knows how much fuel the engine needs. When the PCM receives an irrational signal from the fuel rail pressure sensor, the module logs the P0191 code. What Does the P0191 Code Mean?Causas del código OBD2 P0172 Genérico. El Sensor de Flujo de Aire Masivo (Mass Air Flow) pudiera estar sucio, o defectuoso. El filtro de aire está sucio o contiene aceite. Alguna fuga de vacío. Problema en la …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 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.Opel/VauxhallCorsa-E1.4Engine code: LDD/D14XELEngine code: LDD/B14XEL(X15)66 kW (90hp) 6000 rpmR-Cat (2018-2020)Part no 55566514P0171 System too lean bank 1 ...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 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 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 Flow (MAF ...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.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.A P0172 code indicates that the fuel system is excessively rich or inadequate air in the engine’s air-fuel mixture. The code appears when there is too much fuel in the exhaust gas flowing from the combustion chamber. The code could imply the following. A vacuum leakage near the engine. The fuel system is operating weak.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.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, ...I was curious who has experienced these "Rich Bank" codes P0172 & P0175. What was the solution? I'm wondering if it's the high pressure fuel pump. Tahoe runs fine, but I got the light last week. …GM is launching its own OnStar Insurance based on telematics and available to drivers of all brands of car. By clicking "TRY IT", I agree to receive newsletters and promotions from...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.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...Medicine Matters Sharing successes, challenges and daily happenings in the Department of Medicine Nadia Hansel, MD, MPH, is the interim director of the Department of Medicine in th...WATCH PART 2 REPLACING THE HIGH PRESSURE FUEL PUMP! Next video on the channel!In this video we cover GM Vehicle’s Fault Code troubleshooting for P0172 and P0...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 …Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Equinox’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.Fuel Injectors. P0171 indicates that your Chevy Sonic is either getting too much air or not enough fuel. A clogged or damaged fuel injector will cause the air-fuel mixture to lean out in one specific cylinder. You may see a cylinder misfire code or fuel injector-specific code with P0171.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 P0102 code is set when the Powertrain Control Module ( PCM) detects that the mass air flow (MAF) sensor frequency signal isn’t performing in the normal expected range set by the manufacturer. This trouble code indicates that there’s a low condition within the mass air flow sensor or circuit. This diagnostic trouble code (DTC) is ...The Stabilitrac light came on briefly and then the Check Engine Light came on shortly after. I went up to Advance Auto and read the code and it posted a P0172. Reading the code turned off the light. A quick scan of this forum yielded a few hits about MAFs and oiled filters, which the original owner installed.The automobile fault code P2068 can be caused by a faulty fuel level sensor. It can also be caused by an open or shorted fuel level sensor harness. Poor electrical connection in the fuel level sensor circuit can also trigger this fault code. A faulty instrument cluster can also be a cause of P2068. Lastly, a faulty engine control module (ECM ...Jan 10, 2022 · 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. 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 ...Cross reference GM parts numbers by entering the part number and selecting the make of the car on the Part Number Search page on GMPartsOnline.net. The site cross references the su...The oxygen sensors are always monitoring how much fuel and air is in the mixture. If there is a vacuum leak, it can cause excess air supply to the engine bay. Then, the O2 sensors will detect a rise in air. Also, broken oxygen sensors can trigger the P0171 code. They can do a false readout, which will trigger a code.The P0172 code stands for “Fuel System Too Rich (Bank 1)”. What this means in plain language is that there’s too much fuel being delivered to combustion chambers on bank 1, or not enough air. A car engine requires a 14.7:1 air to fuel ratio to work optimally. There are sensors that monitor the amount of air coming in, and the ECU …Causas del código OBD2 P0172 Genérico. El Sensor de Flujo de Aire Masivo (Mass Air Flow) pudiera estar sucio, o defectuoso. El filtro de aire está sucio o contiene aceite. Alguna fuga de vacío. Problema en la …Since it was a generic code with no related codes present I used my friends reader and cleared it. Fast forward two weeks and I get another CEL but with multiple codes, P0172, P0173, P0175. Tank fuel pressure 54psi, HP fuel 2000psi. O2 sensor readings acceptable but both banks showed -35 LTFT.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 ...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.

Since it was a generic code with no related codes present I used my friends reader and cleared it. Fast forward two weeks and I get another CEL but with multiple codes, P0172, P0173, P0175. Tank fuel pressure 54psi, HP fuel 2000psi. O2 sensor readings acceptable but both banks showed -35 LTFT.. Award storage auctions

gm p0172-00

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.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 …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, ...A forum community dedicated to GMC Terrain, Chevy Equinox, and Cadillac SRX owners and enthusiasts. Come join the discussion about modifications, classifieds, troubleshooting, maintenance, reviews, and more! Diagnostic trouble code (DTC) P0172 stands for “Fuel System Too Rich (Bank 1)”. Your car’s computer may set the code when it detects that there is too much fuel or not enough oxygen in the engine. There are numerous methods for resolving code P0172, however the actual cause must be determined. 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.This video will list most of the symptoms you may notice with this code and the common cause and repairs perform when this code shows up.Please check out my ...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 …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 ...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 …This article explains the P0172 code symptoms, causes, and fixing cost. P0172 Code Definition. The P0172 code stands for “Fuel System Too Rich (Bank 1)”. Bank 1 represents the side of the engine that contains cylinder no. 1. The O2 sensor measures the amount of air in the exhaust gases that are in the engine cylinder. What Does the P0172 ...P0172 System Rich Codes Yes, gas fumes inside the car as well. ... The first mechanic charged me 382.00 and fixed the bottom 02 sensor and it did not fix the issue. When I went back the rip off told me the fuel injector needs replaced so I moved on. ... A forum community dedicated to GMC Terrain, Chevy Equinox, and Cadillac SRX …Opel/VauxhallCorsa-E1.4Engine code: LDD/D14XELEngine code: LDD/B14XEL(X15)66 kW (90hp) 6000 rpmR-Cat (2018-2020)Part no 55566514P0171 System too lean bank 1 ...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 ...Diagnosing and repairing GM and Chevy vehicles with the 5.3 L flex fuel engine. Most common customer complaint is Hard start cold, no start, rough running an...Diagnostic trouble code P0171 means System Too Lean (bank 1). That means the car computer noticed the engine is running lean. A lean system means the air-fuel ratio entering the combustion chamber is not what the engine wants. It means there is too much air or too little gas to balance the specified mixture ratio.Mar 13, 2024 · 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 …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 ....

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