Read more at: OBD-II DTC: P0171 System Too Lean (Bank 1) Chevy Cruze P1101 Causes Engine Wiring– A good place to start is to do an inspection of the area around where the mass airflow sensor plugs into the intake. Make sure that the wiring doesn’t look broken or disconnected. You’d be surprised, in the winter months a rodent can cause a ...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.Jun 16, 2018 ... Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and ...Subject: Information on Malfunction Indicator Lamp (MIL) Illuminated - DTC P0171 Set This Bulletin replaces PIP5197M. Please discard PIP5197M. Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick Encore 2013 2019 1.4L (LUJ, LUU, LUV) Cadillac ELR 2014 2017 Chevrolet Cruze 2011 2016 Sonic 2012 2019 Trax 2013 2019 Volt 2012 2015One of the most common trouble codes with the Chevy Corvette is P0171. It indicates that your Chevy Corvette 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.Code P0171 2017 Chevrolet Silverado Tech Notes. 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 ...Then check your engines history for misfires, you could have a bad plug or a bad contactor or even a bad coil. But these should give you an extra code P030 (1-4). Could also be a dirty MAF or an HO² going out of spec, even a leaky flex pipe can cause a P0171 but usually accompanied with a CAT code.Dec 29, 2018 · P0171 indicates that your Chevy Trax 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. Jul 18, 2018 · P0171 and P0174 occur when the air/fuel mixture on the vehicle gets too lean. They are both thrown when the oxygen sensors detect that there is not enough oxygen in the exhaust. The engine then makes adjustments to compensate and throws these codes, which trigger the service engine soon light. When these codes both appear at the same time, it ... In a previous video Marie diagnosed a lean running Chevy Sonic and figured out it was a leaking valve cover (PCV System) In this video she replaces the leaki...P0171 indicates that your Chevy Trax 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.Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Cavalier’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 P0171 2014 Chevrolet Silverado Tech Notes. 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 ...What Is P0171 Chevy Code. The P0171 is a diagnostics trouble code that indicates a problem with the lean air to fuel mixture on bank 1. Meaning that either bank 1 is affected on your V8 engine or if you run an inline engine there are all cylinders affected with lean air to fuel mixture. Causes For P0171 Chevy CodeWhat 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 …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, ...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. Definition. P0171: Fuel Trim System Lean (Bank 1). Symptoms. Check engine light, decreased fuel economy, misfire, hard to find idle. Common Causes. Hola amigos. Tengo un Chevrolet Onix 2015. Se encendio la luz de servicio y lo hize escanear y dio el codigo P0171. Me dijeron qué podia ser el combustible.despues de unos dias se apagó. Luego se volvio a encender,lo lleve a un taller (Bosch car service) me lo volvieron a scanear y arrojo el mismo codigo. Jul 23, 2023 · 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. Aug 24, 2018 · Te suministramos todo lo que necesitas saber sobre el código DTC P0171: ️ Descripción, ️ causas, ️ síntomas y ️ posibles soluciones.LEER SOLUCIÓN DEL CÓD... PROCEDIMIENTO DE DIAGNÓSTICO EN VEHICULO SONIC CON FALLA, LUZ CHECK (MIL) ENCENDIDA.GSCAN3 DE VENTA EN:MAQUINA DE HUMO DE VENTA EN: www.laredotools.comLAREDO... 6 posts · Joined 2017. #1 · Apr 27, 2018. I have a 2013 1.4 Turbo with the CEL on. The code is P0171 (too lean) It has 71,000 miles on it. I bought it with 51,000 miles on it, and about 12,000 miles later it started making a ticking noise. I was told it was probably the purge valve.solución de código p0171 entrada de aire no registrado por el sensor de flujoIgnoring or neglecting a P0171 engine code can have adverse effects on your vehicle: Reduced Fuel Efficiency: A lean mixture can result in poor fuel economy, costing you more at the pump.; Decreased Performance: Your vehicle's power and acceleration may suffer, leading to a less enjoyable driving experience.; Engine …Tech Notes. 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 ...Fuel Injectors. P0171 indicates that your Chevy Captiva 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.Trouble Code - P0171, P0174. Been getting occasional P0171, P0174 codes but the truck (07-13 Silverado 1500) runs great, idles great and is otherwise not having any performance issues at all. I cleaned the MAF, and throttle body, and installed 4 new Oxygen Sensors (Denso) and still getting occasional P0171, P0174 codes.The 2022 Chevy Bolt EUV may look like a larger, slightly longer Chevrolet Bolt, but under that boxy exterior lies a whole lot of tech that’s both affordable and very advanced. With...The cause of a P0171 code could be as simple as dirty airflow sensors, but you might also be dealing with defective sensors, plugged up fuel filters, jammed fuel …Bill Saporito test-drives the new Chevy SS, a flashback to the time of stick-shift muscle cars. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and i...The Engine Control Module measures the amount of oxygen in the exhaust system via the oxygen sensors and makes adjustments by adding more or less fuel to the mixture. When the adjustments become too large to maintain the proper mixture, the fault codes P0171 and P0174 are logged. They are logged together since, in V8 and V6 (and …Te suministramos todo lo que necesitas saber sobre el código DTC P0171: ️ Descripción, ️ causas, ️ síntomas y ️ posibles soluciones.LEER SOLUCIÓN DEL CÓD...The P0171 diagnostic trouble code indicates the vehicle's computer or Engine Control Module (ECM) has picked up too little fuel or too much air in the system. To do this, the computer constantly ...In this video you'll see location and possibilities on how to fix error code P0171 do not change mass air flow sensor or O2 sensor without checking for vacuu...El Código P0171 indica “Sistema demasiado pobre en el banco 1".Esto significa que hay demasiado oxígeno o muy poco combustible en el escape, lo que se conoce como una condición "pobre" o un código de "ajuste de …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, ...Brian Eslick from How to Automotive http://www.howtoautomotive.com takes you step-by-step through the process of diagnosing code P0171-P0174 lean bank 1 and ... 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 ... 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.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, … PROCEDIMIENTO DE DIAGNÓSTICO EN VEHICULO SONIC CON FALLA, LUZ CHECK (MIL) ENCENDIDA.GSCAN3 DE VENTA EN:MAQUINA DE HUMO DE VENTA EN: www.laredotools.comLAREDO... Oct 24, 2016 ... First the MAF sensor was bad, so I replaced it. Also, it was time to replace the cats, so I did that. After all of that work I got two new codes ...Technician may find Diagnostic Trouble Codes P0171 and or P1101 set. Technician will need to inspect the Air Cleaner Housing. ... 2018-2019 Chevrolet Colorado & GMC Canyon. Information on General Guidelines to Address Sunroof Waterleak Issues – 2016-2020 Cadillac CT6.P0171 is one of the hardest codes to solve because so many things can cause a lean condition. From mice nesting in the airbox to multiple sensors being on the border to corroded connectors. ... A forum community dedicated to Chevy Trax owners and enthusiasts. Come join the discussion about performance, troubleshooting, maintenance ...Problem is, you aren’t sure how to fix Silverado P0171 problems in your Chevy truck. Not to worry, because today I’ll be showing you how to clear your Silverado check engine light and fix your P0171 trouble code. The P0171 GM OBDII DTC Trouble Code relates to the Powertrain Control Module (PCM) seeing too much air from the …The P0174 trouble code is set when the air-fuel mixture for bank 2 is lean to the extent that the ECU cannot compensate by adjusting the fuel trims. The ECU assesses this using a signal from the oxygen sensor. Symptoms you may experience with a P0174 trouble code include rough idle, hesitation on acceleration, misfire, or overall poor …Your car or truck has either a P0171, P0174 lean fault code or both stored in the pc, these codes derive from Oxygen Sensor (O-2) readings. A lean code or codes suggest that there surely is too-much air in the exhaust. Bear in mind parts shops have staff members having good motives nonetheless they may not have the experience …P0171 Definition: Fuel Trim System Lean Bank 1. P0171 is a generic code, meaning it has the same definition for the Chevy Silverado as any other vehicle. Fuel …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.P0171 indicates that your Chevy Trax 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.Illuminated - DTC P026D, P2A00, P0171, P0172 and/or P0300 Set Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Chevrolet Cruze 2014 2015 — — 2.0L Diesel (LUZ) — Cruze 2018 2019 1.6L Equinox 2018 2019 Diesel (LH7) Silverado 2017 2018 6.6LTurbo Diesel (L5P) Silverado 1500 2020 2021 3.0L Diesel (LM2) Silverado …Then check your engines history for misfires, you could have a bad plug or a bad contactor or even a bad coil. But these should give you an extra code P030 (1-4). Could also be a dirty MAF or an HO² going out of spec, even a leaky flex pipe can cause a P0171 but usually accompanied with a CAT code.May 17, 2023 · It receives data from various sensors and uses it to control the fuel delivery system, ignition timing, and other engine functions. If the PCM detects an issue with the fuel system or air/fuel mixture, it may set a P0171 code. The PCM will also store the trouble code and freeze frame data, which can be used to help diagnose the issue. FAQs On P0171 Chevy Cruze How To Fix P0171 Code. System Too Lean (Bank 1) is the diagnosis trouble code (DTC) for P0171. Numerous things can cause this; thus, a technician must identify the precise cause in your case in order to clear the code. What Is Code P0171This 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...2015 Chevy cruze LT 1.4 code P0171. The car had a bad PCV valve so i have replaced the cover as well as the PCV hose and still have this code. Ive checked all the hoses and no leaks. The O2 sensor is functioning properly and the MAF sensor has also been replaced and the puel pressure reads 40-50 on the obd2 scanner. Im at a loss here.What Is a Chevy Cruze P0171 OBDII engine code and what are the fixes?Read here for more information: https://www.backyardmechanic.org/what-is-a-chevy-cruze-p...Jan 6, 2017 ... Engine & Transmission - Check Engine codes, P0171/P0174 HELP - Hey guys, I have a 2001 Chevy Blazer with about 134000 miles on it.The mass air flow sensor calculates the volume of air entering the engine. If it has gone bad, the air fuel mixture will be off and the P0174 and/or P0171 codes will show. It’ll be located between the air filter and the throttle body. It’s easy to find. It will have a wiring harness plugged into it.The P0171 code indicates that the fuel system in part of the engine is running weak or there is a vacuum leak near that side of the engine. This happens when the engine is getting too little gas or too much air. Now let’s go over a bit of Chevy Cruze history. Then we will go into more detail about the P0171 code.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 …The DTC number is a number that is issued in connection with Depository Trust Company transactions. The number, known as an International Securities Identification Number, or ISIN,...Code P0171 2014 Chevrolet Silverado Tech Notes. 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 ... Hola amigos. Tengo un Chevrolet Onix 2015. Se encendio la luz de servicio y lo hize escanear y dio el codigo P0171. Me dijeron qué podia ser el combustible.despues de unos dias se apagó. Luego se volvio a encender,lo lleve a un taller (Bosch car service) me lo volvieron a scanear y arrojo el mismo codigo. The most common causes of codes P0171 and P0174 include: Vacuum Leaks: Vacuum leaks occur when there's an unintended gap or hole in the intake system of the engine, allowing extra unmetered air to enter it. This disrupts the air/fuel mixture, leading to a lean condition and triggering codes P0171 and P0174.The mass air flow sensor calculates the volume of air entering the engine. If it has gone bad, the air fuel mixture will be off and the P0174 and/or P0171 codes will show. It’ll be located between the air filter and the throttle body. It’s easy to find. It will have a wiring harness plugged into it.The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Monte Carlo’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.There’s a video on that a few paragraphs up in the P1101 section. Far and away, the most common trouble codes on the Chevy Cruze are P1101 and P0171. They are OBD-II trouble codes. It's usually a bad MAF sensor or air has gotten in where it should not have when these codes are combined. Jump to: P1101 P0171 P1101: MAF Out of Self Test Range.If you’re in the market for a new or used Chevrolet vehicle, finding the best dealership near you is essential. With so many options out there, it can be overwhelming to know where...The Engine Control Module measures the amount of oxygen in the exhaust system via the oxygen sensors and makes adjustments by adding more or less fuel to the mixture. When the adjustments become too large to maintain the proper mixture, the fault codes P0171 and P0174 are logged. They are logged together since, in V8 and V6 (and …Bank 1: Now, to be a little more specific, P0171 DTC tells you that bank 1 is the one having the issue. Bank 1 is the engine bank that holds the spark plugs for cylinders 1, 3, and 5 (V6 4.3L). Cylinders 1, 3, 5, and 7 (V8 5.0L, 5.7L). This bank is the one on the driver side of the engine. Bank 2: A P0174 DTC tells you that bank 2 is the one ...May 17, 2023 · It receives data from various sensors and uses it to control the fuel delivery system, ignition timing, and other engine functions. If the PCM detects an issue with the fuel system or air/fuel mixture, it may set a P0171 code. The PCM will also store the trouble code and freeze frame data, which can be used to help diagnose the issue. The mass air flow sensor calculates the volume of air entering the engine. If it has gone bad, the air fuel mixture will be off and the P0174 and/or P0171 codes will show. It’ll be located between the air filter and the throttle body. It’s easy to find. It will have a wiring harness plugged into it.P0171 is a lean code caused by a vacuum leak, mass airflow failure, faulty PCV valve, or low fuel pressure. What causes code P0171 in a Chevy? A vacuum leak, which brings more air into the air-fuel mixture, or a poor fuel system that does not inject enough fuel into the air-fuel mixture, can cause lean conditions in a Chevy.Today, we’ll be looking at a Chevy Trailblazer with a check engine light on and a stored code p0171. We’ll use the G scan scan tool to scan the code and diagnose the issue. The p0171 code typically indicates an engine vacuum leak or a faulty mass airflow sensor or O2 sensor.The P0171 code could either mean that the oxygen sensor detects too much oxygen or too little fuel in the air-to-fuel ratio. Some possible causes for the imbalance include vacuum leaks, malfunctioning mass air flow sensors, and a clogged fuel filter. Symptoms of the P0171 code include power loss, misfires, and rough idling.P0171 is a lean code caused by a vacuum leak, mass airflow failure, faulty PCV valve, or low fuel pressure. What causes code P0171 in a Chevy? A vacuum leak, which brings more air into the air-fuel mixture, or a poor fuel system that does not inject enough fuel into the air-fuel mixture, can cause lean conditions in a Chevy.One of the most common trouble codes with the Chevy Cruze is P0171. It indicates that your Chevy Cruze is running lean on the bank one side. It’s the most common air/fuel mixture-related code. ... Read more at: OBD-II Trouble Code: P0300 Random/Multiple Cylinder Misfire Detected "Don't just drive CRUZE!" ༼∵༽ ༼⍨༽ ༼⍢༽ ༼⍤༽It receives data from various sensors and uses it to control the fuel delivery system, ignition timing, and other engine functions. If the PCM detects an issue with the fuel system or air/fuel mixture, it may set a P0171 code. The PCM will also store the trouble code and freeze frame data, which can be used to help diagnose the issue.Feb 6, 2019 ... 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 ...The P0171 diagnostic trouble code indicates the vehicle's computer or Engine Control Module (ECM) has picked up too little fuel or too much air in the system. To do this, the computer constantly ...Jul 18, 2018 · P0171 and P0174 occur when the air/fuel mixture on the vehicle gets too lean. They are both thrown when the oxygen sensors detect that there is not enough oxygen in the exhaust. The engine then makes adjustments to compensate and throws these codes, which trigger the service engine soon light. When these codes both appear at the same time, it ... 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 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.P0301 + P0171. Look for a vacuum leak around the first cylinder or a bad fuel injector. P0171 is one of the most common trouble codes there is. While there are many potential causes for P0171, the most prevalent is a vacuum leak. When your Malibu has P0301 and P0171 together, it’s often caused by a clogged or underperforming fuel injector.P0171 and P0174 both indicate that there is a lean condition present in your Chevy Corvette. By themselves, these are some of the most common OBD2 codes. When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning.
P0171 and P0174 both indicate that there is a lean condition present in your Chevy Corvette. By themselves, these are some of the most common OBD2 codes. When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning.. Mohawk burst fade
When the P0171 code sets, the oxygen sensors are detecting too little oxygen in the exhaust (running "lean") and the control module is adding more fuel than normal to sustain the proper air/fuel mixture. Rich Mixture = Too much fuel, not enough air. Lean Mixture = Too much air, not enough fuel. Driving with this trouble code is not recommended.Code P0171, also known as the "Fuel Trim System Too Lean (Bank 1)," is a diagnostic trouble code that your vehicle's onboard computer (ECU) generates when it detects an imbalance between the air and fuel mixture in the engine's cylinders. To fully grasp the implications of P0171, let's break it down: P0171 is triggered by the engine bank 1 “upstream” oxygen sensor and P0174 is triggered by the engine bank 2 “upstream” oxygen sensor. The oxygen sensor alerts your system when the condition is too lean meaning there’s too much oxygen in the exhaust. The symptoms and causes will help you determine the exact issue and how to fix it. In this video we discuss common causes and repair for code P0171. the subject vehicle is a 2006 Chevy Equinox equipped with the 3.4L engine. Also shown, a 20...System Too Lean (Bank 1) is the diagnosis trouble code (DTC) for P0171. Numerous things can cause this; thus, a technician must identify the precise cause in your case in order to clear the code. ... The P0171 Chevy Cruze indicates that the combustion chamber is either too airy or too fuel-starved, causing the engine to run lean. ...Fuel Injectors. P0171 indicates that your Chevy Captiva 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.What Does Code P0171 Mean? OBD II fault code P0171 is a generic code that is defined as P0171 – “System Too Lean Bank 1”, and is set when the PCM (Powertrain Control Module) receives input data from the #1 oxygen sensor or air/fuel ratio sensor on bank 1 indicating that the air/fuel mixture has been too lean for an extended period of …What Does Error Code P0171 Mean? Diagnostic trouble code P0171 means System Too Lean (bank 1). That means the car computer noticed the engine is running lean. A lean …It receives data from various sensors and uses it to control the fuel delivery system, ignition timing, and other engine functions. If the PCM detects an issue with the fuel system or air/fuel mixture, it may set a P0171 code. The PCM will also store the trouble code and freeze frame data, which can be used to help diagnose the issue.2015 Chevy city express 2.0L has code p0171 - Answered by a verified Chevy Mechanic. By chatting and providing personal info, you understand and agree to our Terms ... 2015 Chevy Truck City Express L4-2.0L ***** abs dtc u1002:00 this are the only code on this car no other modules has any codeson abs live date the steering anlge …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.Codigo de falla P0171. Chevrolet Tracker 2019 5 puertas 70000 kms. Código P0171 Bobina. Se inspecciono con escáner y presenta esta falla P0171, el vehículo presenta fluctuación constante en el relánti (rpm) y me dicen que esta fallando la bobina que por cierto ya averigué y es bastante costosa, por el momento se sigue inspeccionando para ... 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 ... .