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Chevrolet dtc p0171 00 - This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to many

The P0171 code is thrown when the bank one sensor o

2012 chevy equinox 2.4l ecotec, getting a P0171 code. MAP sensor vacuum line was broke.10 Causas del código DTC P0171. Sistema de combustible con fugas. Filtro de combustible obstruido. Inyectores de combustible defectuosos. Sensor de oxígeno (O2) defectuoso. Sensor de presión de combustible defectuoso. MAF o sensor de flujo de aire defectuoso. Válvula EGR obstruida o defectuosa.Los síntomas que se ven comúnmente cuando se presenta el código P0171 son los siguientes: La luz Check Engine en tu tablero se enciende. Problemas para arrancar el motor. Si el motor arranca, podrás ver un funcionamiento irregular. Problemas al ralentí y al acelerar. Illuminated - DTC P026D, P2A00, P0171, P0172, and/or P0300 Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Chevrolet Cruze 2014 2015 - - LUZ-Cruze 2018 2019 LH7 Equinox 2018 2019 LH7 Silverado 2017 2018 L5P Silverado 1500 2020 2020 LM2 Silverado 2500/3500 2019 2020 L5P Silverado 4500HD, 5500HD and 6500HD 2019 …Sep 12, 2017 · 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 P0420 definition : Catalyst system efficiency below threshold (Bank 1) 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 further damage to your emission system and possible engine damage. Diagnosis: The most …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 …Re: 2012 chevy cruze p0106, p0171, p0111 and p2270. Check out cruztalk forum could be the P0171 is the primary code for this problem. Engine running lean due to air leak intake manifold. In some Chevy Cruze, Trax, Sonic and Buick Encore with a 1.4L-turbo engine, a failed diaphragm or a missing check valve in the intake manifold can …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. 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. P0171 SymptomsDiagnose. Difficulty of Inspecting. Get Additional Help. A P0171 code is set by your vehicle’s powertrain control module (PCM) when it detects that the air-to-fuel ratio of your vehicle …The P0171 OBD-II code means that, on the first bank of the engine, the fuel system is running weak or a vacuum leak exists near this side of the engine. A lean condition occurs when the engine either receives too little fuel or too much air. What are the causes of the P0171 code? Causes of the P0171 code may include: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 …What Does Code P0174 Mean? P0174 definition: Bank 2 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. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the …With a Chevrolet P0171 code, the first step is to get it properly diagnosed to figure out what is causing the engine to run lean in Bank 1. Using the … See moreThe P2096 code shows that the post-catalyst fuel trim system is too lean on Bank 1. That simply means that it is getting too much air and not enough fuel to be perfectly balanced. This condition is recognized by the oxygen sensors and the code is generic across most manufacturers. On a four-cylinder or straight-six-cylinder engine, the Bank 1 ...What is the Cost to Diagnose the Code P015B Chevrolet? Labor: 1.0. The cost to diagnose the P015B Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Fault Location. Probable Cause. P0171. System too lean, bank 1. (Buy Part On Amazon) Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector (s), HO2S. We recommend Torque Pro.P0171 indicates that your Chevy Aveo 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 have one or more fuel injectors that have gone bad, that can cause ...Dec 26, 2022 · Chevrolet Cruze P0011 definition: Intake Camshaft Timing – Over-Advanced Bank 1. Issue Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid damage to multiple internal engine components. Diagnosis: This trouble code severely impacts the drivability of your vehicle. Code P0174 Chevrolet 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 ...Customer Concern: Malfunction Indicator Lamp (MIL) on. Powertrain Control Module (PCM) DTC P0171.Average Reported Mileage: 100343P0171 p0174 System Lean Trai...Diagnosing P0171 can be challenging, as there are many possible causes and symptoms. However, the following steps can help to narrow down the possibilities and identify the root cause of P0171: The diagnostic trouble codes (DTCs) are retrieved using an OBD-II scanner or code reader. P0171 is a generic code that indicates a lean condition on Bank 1.In this way, the O2 sensor will detect that system is lean, due to which the P0171 code is detected. The symptom of exhaust leaks is that you will hear a whistling noise. To detect exhaust leaks, you can read this guide. P0171 Code in Nissan, BMW, Ford and Chevy. In Nissan, BMW, Ford and Chevy, the P0171 code is caused by the …The cost to fix a P0013 code depends on the type of vehicle and the issue. – The exhaust solenoid costs between $20 and $60, while labor costs are in the range of $75 and $150. – The camshaft position sensor costs between $40 and $60. The price of a mechanic is between $100 and $130.Re: 2012 chevy cruze p0106, p0171, p0111 and p2270. Check out cruztalk forum could be the P0171 is the primary code for this problem. Engine running lean due to air leak intake manifold. In some Chevy Cruze, Trax, Sonic and Buick Encore with a 1.4L-turbo engine, a failed diaphragm or a missing check valve in the intake manifold can …The P0171 OBD-II code means that, on the first bank of the engine, the fuel system is running weak or a vacuum leak exists near this side of the engine. A lean condition occurs when the engine either receives too little fuel or too much air. What are the causes of the P0171 code? Causes of the P0171 code may include:What Does Code P0171 Mean? 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.12 chevrolet sonic with a 1.8l cust complaint is a check engine light, veh has p0171 fuel trim system too lean stored, this video shows how to identify a pro...27-Feb-2023 ... The P0171 Chevy is a DTC trouble code. The simple definition for the P0171 code is System Too Lean (Bank 1). But what does this means in the ...The powertrain control module (PCM) uses that reading along with other sensor parameters to ensure proper fuel delivery at any given time for optimum power and fuel efficiency. This P0102 diagnostic trouble code (DTC) means that there is a low condition detected in the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF ...Diagnostic trouble code (DTC) P015B stands for “O2 sensor Delayed Response – Lean to Rich (Bank 1, Sensor 1). ... For example, repair steps for a P015B code in a Chevy Cruze may vary from the repair steps for a P015B in a Nissan Sentra.The OBDII trouble code P0171 - System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel. Driving a car with the code P0171 can cause more …20-Apr-2022 ... Chevy Sonic Owners Forum · J · 1.4L Radiator Replacement??? Latest: Jski; Yesterday at 12:00 AM. Maintenance and Care · Members online. No ...108 satisfied customers. 2009 Chevy Cobalt 2.2 L engine. My Son called and said car. 2009 Chevy Cobalt 2.2 L engine. My Son called and said car wouldn't start. Check Engine Light on and DTC P0171. Changed fuel filter and … read more.P1000 – P1099 (Fuel and air metering and auxiliary emission control) P1011. Intake camshaft position (CMP) actuator, bank 1 -incorrect park position. Engine oil level/pressure, mechanical fault. P1012. Exhaust camshaft position (CMP) actuator, bank 1-incorrect park position. Engine oil level/pressure, mechanical fault. P1013.Questo codice di diagnosi del problema (DTC) P0171, è un codice powertrain generico ed è applicabile a tutte le marche e modelli di veicoli. Di solito implica che un sensore di ossigeno nel banco 1 abbia rilevato una condizione di malfunzionamento, cioè troppo ossigeno nello scarico. P0171 è uno dei codici di errore più frequenti. What Repairs are Needed to Fix a P0171 Code Issue? The repairs for the P0171 code will depend on what the mechanic finds which could be any of the following. Replacing the fuel pump, fuel filter, or fuel pressure regulator; Fixing a vacuum leak, mass airflow sensor, or the oxygen sensors; Replacing one or more fuel injectorsDefinition. 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 …Feb 17, 2020 · 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. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry. 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...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 …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 ... Customer Concern: Malfunction Indicator Lamp (MIL) on. Powertrain Control Module (PCM) DTC P0171.Average Reported Mileage: 100343P0171 p0174 System Lean Trai...Fuel trims and Equinox P0171 or Terrain P0171 trouble code. A P0171 FUEL METERING TOO LEAN code can mean the engine is getting too much unmetered air or too little fuel. So you want to see if the PCM is trying to add fuel. Refer to the short and long term fuel trim data on your scan tool. Short term fuel trims should vary as your drive …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 ...Fuel trims and Equinox P0171 or Terrain P0171 trouble code. A P0171 FUEL METERING TOO LEAN code can mean the engine is getting too much unmetered air or too little fuel. So you want to see if the PCM is trying to add fuel. Refer to the short and long term fuel trim data on your scan tool. Short term fuel trims should vary as your drive …Trouble code P0446 stands for an Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction. This code means that the car’s computer detected trouble with the EVAP system vent valve’s function. This vent valve is also known as the purge valve. The computer is responsible for monitoring and controlling the purge valve.Chevrolet GMC Involved Region or Country North America, Europe, Uzbekistan, Russia, Middle East, Iraq, Israel, Palestine, ... During service of a vehicle that came in with an engine related DTC that required a fuel ... • P0171 • P0172 • …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 …P1109 Diagnostic Trouble Code (DTC): P1109 - BARO Sensor Circuit Out of Range High ... P2A00 O2 Sensor Circuit Range/Performance · P2A01 O2 Sensor Circuit Range ...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 …If diagnosing for oil leaks and/or DTC P1101 with no engine oil leaks and excessive positive crankcase pressure exists, an obstructed PCVorifice (1) would be suspect requiring a PCVorifice replacement. 5519694 1. Remove the camshaft cover (1). Refer toCamshaft Cover Replacement in SI. 2. Remove the PCVorifice (2) and inspect for blockage. 3.21-Jul-2020 ... 2010 Malibu LT 2.4. 147k miles. Recently replaced the throttle body, exhaust manifold, up and downstream O2 sensor, Catalytic converter, ...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.While some trouble codes leave vehicle owners with a plethora of possible causes, the P0449 code likely only has one of three possible causes. First, the vent valve in the evaporative emissions system might be faulty. Second, the connection, wires, or circuits in the system might be having a connectivity issue that is causing a false reading.Valvosider srl is an Oil and Gas, Industrial Machinery & Equipment, and Settore Metalmeccanico company located in Borgosesia, Piemonte with $3.00 Million in revenue and 44 employees. Find top employees, contact details and business statistics at RocketReach.Jul 14, 2018 · The most common causes of P0171 are the purge valve or a vacuum leak. 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. Save. MyShibbyEco Lifetime Premium · #3 · Aug 4, 2013 (Edited by Moderator) AutumnCruzeRS said: P0171 - Fuel System Too Lean Bank 1. Monitor Strategy Description; Determines if the fuel control system is in a lean condition, based on the filtered long-term and short-term fuel trim. Malfunction Criteria;One 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.30-Mar-2022 ... 2013 Chevy Sonic please help (error code p0171-00) just changed the O2 sensor and did not help. Almost seems worse. This video cannot be ...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. It's not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes...Qué significa code DTC P0171 Chevrolet en español. Este código de falla en las camionetas Chevy lo que nos indica es que hay una combustión incompleta. El detector de oxígeno en el banco 1 del motor indica que hay un exceso de oxígeno en los gases de escape. Esto quiere decir que la mezcla de aire y combustible no es la adecuada ...Hi in this video I will show you how to fix a p0171 on your Chevy Aveo LTP0013 on Some Chevrolet Vehicles. Code P0013 may appear on some Chevrolet vehicles like the 2016 Chevrolet Equinox L 2.4L L4. Conditions for running DTC P0013 in a 2016 Chevy Equinox can include: The ignition voltage is greater than 11 V. The ECM has commanded the camshaft position actuator solenoid valve 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. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the …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 …If diagnosing for oil leaks and/or DTC P1101 with no engine oil leaks and excessive positive crankcase pressure exists, an obstructed PCVorifice (1) would be suspect requiring a PCVorifice replacement. 5519694 1. Remove the camshaft cover (1). Refer toCamshaft Cover Replacement in SI. 2. Remove the PCVorifice (2) and inspect for blockage. 3.To fix the P1516 code, you will need to diagnose the throttle actuator control module and its wiring. If you find any problems with these, you need to repair or replace them. You’ll also want to inspect the pedal position sensor and throttle body. You should also clean the throttle body if it’s dirty.Proper diagnosis is key to repairing a DTC. However, not everyone has access to the tools and expertise needed to fix trouble codes like the P0752. If you’re not familiar with DTC repairs and troubleshooting, it’s best to have a certified mechanic do the job for you so you can avoid even more complicated problems later on.Feb 17, 2020 · 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. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry. Diagnostic trouble code (DTC) P2463 stands for “Diesel Particulate Filter Restriction – Soot Accumulation.” Diesel particulate filters remove about ninety percent of carbon particles (or soot) from a vehicle’s diesel exhaust. Most of these filters include a DPF housing that contains a filtration element.One 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.I have no hesistation, loss of power or any other issues. 2006 Chevrolet Equinox LT AWD Maintenance & Repair. 5.27-Feb-2023 ... The P0171 Chevy is a DTC trouble code. The simple definition for the P0171 code is System Too Lean (Bank 1). But what does this means in the ...Nov 16, 2011 · Ricky Peters. Chevrolet Master. 2,620 Answers. Sounds like it could be weak fuel pump.First check the fuel pressure it should be 60-66 psi with key on engine off.It takes at least 52 psi to open the poppet valve inside the injector to allow fuel thru,so if the valve is only opening partially then it could be running lean. Posted on Nov 16, 2011. This diagnostic trouble code (DTC) indicates that your vehicle’s intake vacuum flow is unusually high. Follow along as we further define the code, discuss its severity and provide potential ...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 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 …Jul 18, 2018 · 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. Nov 16, 2011 · Ricky Peters. Chevrolet Master. 2,620 Answers. Sounds like it could be weak fuel pump.First check the fuel pressure it should be 60-66 psi with key on engine off.It takes at least 52 psi to open the poppet valve inside the injector to allow fuel thru,so if the valve is only opening partially then it could be running lean. Posted on Nov 16, 2011. The MAP sensor signal should be 1 to 4.5 volts, heading back to the PCM, depending on what load the engine is running at. If the P0106 code is set, it means that the signal went below or above that for a predetermined amount of time. This code is defined as generic by the SAE (Society of Automotive Engineers).If you have a P0171 code, it means that your engine is running lean. This can be caused by a number of different factors, but the most common cause is a vacuum leak. If you have a vacuum leak, it will allow more air to …Chevrolet, video recording | 90K views, 147 likes, 4 loves, 9 comments, 9 shares, Facebook Watch Videos from ScannerDanner: There are a lot of causes for a P0171 Fuel Trim System Lean fault code. A...Code P2635 Chevrolet Description. The Engine Control Module supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on.The voltage from the ECM to the fuel pump driver control module remains active for 2 s unless the engine is in crank or run. While this voltage is being received, the fuel pump …Qué significa code DTC P0171 Chevrolet en español. Este código de falla en las camionetas Chevy lo que nos indica es que hay una combustión incompleta. El detector de oxígeno en el banco 1 del motor indica que hay un exceso de oxígeno en los gases de escape. Esto quiere decir que la mezcla de aire y combustible no es la adecuada ... Chevrolet P0420 definition : Catalyst system efficiency below threshold (Bank 1) 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 further damage to your emission system and possible engine damage. Diagnosis: The most …20-Apr-2022 ... Chevy Sonic Owners Forum · J · 1.4L Radiator Replacement??? Latest: Jski; Yesterday at 12:00 AM. Maintenance and Care · Members online. No ...Apr 9, 2020 · Chevrolet. Sonic. 2020. Code p0171 in a Chevy Sonic means that the fuel system is running too lean. A lean condition means that the oxygen sensors detect that theres not enough oxygen in the exhauSTSystem. Your car's ECM will add more fuel to the mixture to bring the air-fuel mixture where it needs to be for optimal combustion. P0171 indicates that your Chevy Aveo 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 have one or more fuel injectors that have gone bad, that can cause ...The cost to fix a P0013 code depends on the type of vehicle and the issue. – The exhaust solenoid costs between $20 and $60, while labor costs are in the range of $75 and $150. – The camshaft position sensor costs between $40 and $60. The price of a mechanic is between $100 and $130.Questo codice di diagnosi del problema (DTC) P0171, è un c, What Repairs are Needed to Fix a P0171 Code Issue? The repairs for the P0171 code will depend on what the mech, What does the P0171 code mean? A Code P0171 or system too lean bank 1 , FIX CODE P0171 CHEVROLET CRUZE CHEVY SONIC SYSTEM TOO L, The diagnostic trouble code (DTC) P228C indicates “Fuel Pressure Regul, Code P2635 Chevrolet Description. The Engine Contro, The OBDII trouble code P0171 - System Too Lean (Bank 1) means that th, 27-Feb-2023 ... The P0171 Chevy is a DTC trouble code. The simple de, J. jt1996 Discussion starter · May 30, 2019. , Diagnostic trouble code (DTC) P015B stands for “O2 sensor Delayed , Jul 18, 2018 · P0171 indicates that your Chevy Impal, Subject: Malfunction Indicator Lamp Illuminated (MIL) - DTC P2635 and, 30-Mar-2022 ... 2013 Chevy Sonic please help (error, Get Additional Help. The OBD code P1101 is a trouble code , The P0171 OBD-II code means that, on the first bank of the e, Chevrolet Codes; Trouble Code Fault Location Probable Cause; B1325: , Fault Location. Probable Cause. P0171. System too le, Jul 27, 2018 · The most common causes of P0171 are a bad Oxygen senso.