Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Chevrolet, Cadillac, Buick, and GMC P0171. This article explains the P0171 code causes, symptoms, and its fixing cost. All our repairs are backed by our 12-month / 12,000-mile warranty. They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance., YourMechanic will come to wherever your car is to perform any of a wide variety of car maintenance and repair services, and will charge you less than you'd normally pay if you were to drop your car off at a garage., "YourMechanic will fix your car at your garage at a fixed hourly rate much lower than their brick-and-mortar counterparts.". The average cost to replace a fuel pressure regulator is $280, where the cost of parts is about $170 and the cost of labor is about $110. Denver, CO 80209. If you realize that your car has other troubles requiring very expensive repair, it's recommended that you evaluate the situation and see whether it's the right time now To sell your car to Cash Cars Buyer or not. We understood that you can experience symptoms like misfires, rough engine work, low engine power, increased fuel consumption. Here, the price of the parts normally depends on the age of the vehicle. Many people when they get the problem with the system too lean bank 1 decide to replace the O2 sensor since they get a bad reading but you shouldnt hurry with the diagnostics. For example, you may get a readout showing a fuel system error, which will narrow the issue down. Low combustion means a lack of power from the engine. And what about the costs? Another culprit for this problem can be vacuum leaks. However, other factors can potentially contribute to the P0171 error code. Engine misfires as well can be one of the possibilities when you are experiencing a system too lean bank 1 problem on your car. Normally that will cost you around $1,000 although prices can range from as low as $500 to as much as $2,000+ depending on your vehicle. Lean conditions are often caused by air entering the system somewhere where it cannot be monitored. Save my name, email, and website in this browser for the next time I comment. Check the fuel pump, fuel pump relay, and the P0162 P0162 code definition Trouble code P0162 is set when a malfunction is detected on the bank 2 sensor 3 oxygen sensor circuit. Diagnostic trouble code (DTC) P2187 stands for "System Too Lean at Idle (Bank 1)." It indicates that your vehicle's computer detected a potential issue with the fuel mixture at idle. Repair Information for P0171 Nissan code. In some cases, the system too lean error can be a powertrain control module issue. If not, you need to test your MAF sensor and see if its faulty. The fuel pressure regulator monitors the fuel pressure in the engine, and if it isnt working, you wont achieve the necessary air-fuel ratio. A lean condition occurs when the engine either receives too little fuel or too much air. The P0171 trouble code stands for "System Too Lean (Bank . Here, youll either have to reset the software or replace the control module. If your fuel filter is located inside the tank, you can expect repair costs to be somewhat higher. Start by checking the intake boot from the MAF to the throttle body. This issue will then show the P0171 System Too Lean Bank 1 code. Let's take a closer look at some of the recommendations on how to fix the P0171 code at home: Before we list the different DIYs to help you fix the P0171 code, it is important first to take a step back and confirm that your vehicle has this error. The codes get activated when the PCM detects excessive oxygen in the exhaust. This movement means that something in the combustion process is not right and needs checking. The P0171 code is linked to your car having clogged fuel injectors, implying the engine controller is sensing a lean state. The average cost to replace a PCV valve hose is about $80, where the cost of parts is about $25 and the cost of labor is about $55. A bad fuel pump can also be the cause for the system too lean bank 1 problem. As we indicated before, when your vehicle has a P0171 code, the problem could be related to very few fuel supplies or too much air supply. As experts, we recommend performing a thorough inspection using an OBDII scanner and testing multiple items that might cause the problem. For a lean condition to occur, the fuel system is not functioning properly. . Vehicle Make and Model. Welcome to Motor Verso. Some of the repairs well cover that can fix this problem include replacing a weak fuel pump, replacing a clogged fuel filter, replacing a malfunctioning fuel pressure regulator, replacing injector(s), replacing faulty sensors (mass airflow), replacing the powertrain control module, or fixing a vacuum leak by replacing the PCV valve hose. Convenient Car Removal For Busy Schedules: Same Day Car Pickup. By doing so, you will fix the problem and not waste so much money on gas. If the cause of this issue is still not found after the mechanic has performed these two tests, the problem likely lies with a sensor. If your onboard software is misreading data, youll get errors. Here, your issue is most likely clogged, gummed, or worn fuel injectors. The Truth Revealed! The fuel pump is a little more expensive and costs somewhere between $1300 and $1700. P0171 Code Diagnosis: Symptoms, Costs, and Fixes. The only way to do so is by scanning the car for codes. Usually, replacing the oxygen sensor is the 2nd common method to fix the P0171 code. But what are the causes for this lean air to fuel mixture? What Is The Fastest Way To Sell My Old Car For Cash? The check engine light may be linked to simple issues like a loose fuel cap and indicate a significant problem related to complete engine failure. This extra gas is going to worsen your fuel mileage. If that's the case, the problem is most likely due to a bad Fuel filter, faulty fuel injector, or malfunctioning fuel pump. If their code wasn't removed, then the issue was not resolved, which could mean that you performed the DIY wrong or the DIY did not resolve the issue, and there's something else hidden. Further, parts tend to cost the same as or less than labor when replacing the fuel filter, so you may consider installing the part yourself to cut back on costs. The good news here is that these DIYs should work most of the time, which means that you don't have to worry about labor costs. When you are having a rough idle, the engine as well is going to try to stall sometimes. Replace any obviously damaged vacuum lines/hoses, and operate the vehicle normally before rescanning the system to see if any codes return. This check engine light makes diagnosing problems on your vehicle a breeze. Vacuum leaks, Dirty MAF, THEN check the O2 and A/F sensors. You must use the OBDII scanner and ask it to clear any inactive error code. Diagnosing the P0171 code is easy if you have the right tools to do it. I am here to help you with your car questions. And, because it normally takes less than an hour of work to replace, it can be a very quick fix. We will also discuss several factors that may affect the overall cost of these repairs and part replacements. Basically, the valves will not work properly and will be open for too long until they remove all the unburnt air from the combustion chamber. P0171 is a diagnostic trouble code (DTC) for "System Too Lean (Bank 1)". Repair the leaks if you find any. In many cases, youll have to input dealer codes to get them to work. Copyright 2023 Mechanic Base. Depending on the shop's labor rate, this typically costs somewhere between $75-$150. Issues with fuel pressure regulators require between $200 and $400. Therefore, you need to consider reviewing other items if none of the common DIYs help you fix the P0171 code. Removing the foot from the gas pedal will cause too much air to be consumed on one of the banks of the engine, and this can result in low combustion on bank 1. However, rates vary between $15 and $210 depending on the shop and your location. . To clear or reset the P0171 code, you need to use an OBD2 scanner. Depending on your vehicle, a new fuel pressure regulator will cost $140-$500. You will also incur different taxes depending on where you go to receive auto labor and where you buy your parts online. We have a team of writers working daily on common car problems. In fact, the cost to repair the system too lean bank 1 error can range between $80 and over $1,000. Bad readings from these O2 sensors can lead to bad air to fuel mixture and possible system too lean bank 1 error. When you take your car to a mechanic for diagnosis, most will begin with an hour of labor diagnosing your specific issue. As one of the most common issues behind a lean system error, vacuum leaks should be one of the first things you check. But then you try to start your car and discover that your Check Engine light is on and the engine is running rough. You can usually fix P0171 using the following steps: If your cars air filter becomes blocked or extremely unclean, it will hinder or restrict the flow of air. Some factors that might affect the overall cost of repairs include how many repairs/replacements your vehicle needs, what type of vehicle you own, your location, what type of engine you have, and more. So, you will have to pay for that in . But what does this mean? P0171 code is a very common error that you might notice in any vehicle, which is most likely related to a problem with the air-fuel mixture ratio. However, it is never recommended to drive your car for an extended time with this error because it might introduce engine overheating and result in engine damage. The mechanic would then run tests on the mass airflow sensor and the oxygen sensors using the manufacturers procedure. This issue is indicative of one or more problems related to your cars engine air-fuel mixture. After scanning the car if you have this issue, you are going to get the error P0171. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. A faulty O2 sensor is not a very common cause of the P0171 code, even if many people start to replace it directly when they see this code. This can cause delays until the problem becomes bigger and bigger. P1137 - Downstream Heated Oxygen Sensor 1 Malfunction; P1151 - System Too Lean (Bank 1) In some cases, you'll be able to repair the problem easier if you look at the trouble codes altogether. Test other components as well because you never know where the problem lies. Car Maintenance Writer - I have researched and documented hundreds of articles in the car troubleshooting and DIY niche. If you notice how the car becomes thirstier, its a clear sign that something has to be checked and repaired. A lean state happens when the engine receives either too little or too much fuel. When you are experiencing a problem like this, the best thing to do is to open up the throttle body and see its condition. To get better guidance, you can refer to of Eagles owners manual. On the other hand, if you tried one of the mentioned DIY's and it resolved your issue, you will end up with 0 costs to fix the P0171 code. But to get this message, you need to have a check engine light and scan the car for codes. As we said, when the air to fuel mixture is not 14.7 to 1, it means that some symptoms are going to develop. 300 S Monroe St The cost of fuel filter replacement for different vehicle models can really vary, but the general trend is that higher-quality or luxury vehicles have more expensive engine parts. It is a good idea to have this code diagnosed and repaired as soon as possible to have your vehicle running smoothly. This can be most pronounced when you remove your foot from the gas pedal. Ask me anything. Learn what Fuel Injection System Too Lean Bank 1 means, location and how to repair? Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. If cleaning the MAF sensor did not resolve your issue, check the oxygen sensor. Most auto repair shops charge between $75 and $150 per hour. Bad or clogged fuel injectors can also be one of the culprits for this specific problem with the lean air to fuel mixture. However, vacuum leaks change the air pressure in your fuel injection system. Check engine light is one of the most important elements that any driver must keep an eye on. Another symptom of the system too lean bank 1 problem is the low engine power. This check engine light can be pretty annoying and you are probably will not enjoy it when you see it on your dash. The P0171 error code's main definition is System Too Lean (Bank 1). To better understand this definition, it is crucial for you to go through the basics that involve when your fuel is lean versus when it's too rich. AI Car Expert: Vacuum leaks are considered the second most common cause of the system to lean error. In one of the next chapters, we are going to learn what could be the possible culprits for this problem, and how you can overcome this issue. Get your OEM Toyota oxygen sensors here. This loss of power can be a frustrating thing, especially if your car already has a low-powered engine. Catalytic converters are very expensive to replace, Kraftwerk Tour 2022 Brings 3-D Concerts to US Cities. Well start from the basics, and then we will move to the symptoms and the probable causes for this issue and how to solve them. Bank 1 means that the problem is in engine bank 1, which is usually the bank of cylinders located towards the front of your car, although this depends on your engine type. We and our partners use cookies to Store and/or access information on a device. Check here What are Code P2187 Hyundai Possible Symptoms? If its full of gunk, then you can give it a good clean. However, if the sensor goes bad, it can result in a bad air-fuel mixture. A common diagnostic mistake is to start replacing parts without making a proper diagnosis. Updated: July 10, 2021. Therefore, never attempt to replace the oxygen sensor and think it's the final solution to eliminate the P0171 code. P0014 Meaning, Fixes, Causes, Details & Troubleshooting. Dirty or damaged sensors can cause your fuel injectors to uptake more air, to take in less fuel, or to show readings that are inaccurate. In many cases, you wont even have to remove them from the engine. These scanner tools are fairly cheap and can be found anywhere online and in most car parts stores for $30. Possible Repair Costs for P0172 Does your Hyundai have Safety Recalls? In some cases, onboard software and sensors can malfunction and show false readings or can cause mistakes. Assuming no other fault codes are present, a mechanic can diagnose the P0171 by using a vacuum gauge to examine the engine for suction leaks. We learned that this problem happens on bank number one and it happens because the air to fuel mixture is too lean. They can save you a tremendous amount of time and work. If you start replacing MAF sensors, O2 sensors, etc., you will probably spend a lot of money without results. Continue with Recommended Cookies. This article provides you with all in just a note to understand the P0171 code. P0171 is an OBD-II code that indicates that the fuel system on the first bank of the engine is weak, or a vacuum leak exists near this side of the engine, causing either too much oxygen or too little fuel in the exhaust. The P0171 OBD-II codeindicates 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. An example of data being processed may be a unique identifier stored in a cookie. When dealing with a P0171 code, some suggested DIY's by professional mechanics and automotive experts to help you resolve the problem from home without needing a professional mechanic. The fuel pressure regulator monitors the fuel pressure in the engine, and if it isnt working, you wont achieve the necessary air-fuel ratio. Even though it took several attempts I'm so happy he was determined to fix it and he did! Remember that one of the biggest ways to save money on these repairs is to do them yourself. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Did you know that performing a diagnostic only might cost you about $100? From my observation, Mr. Barber appears to be quite professional. Flat rate pricing based on labor time and parts, Hand-picked, community-rated professionals, Trusted mechanics, rated by thousands of happy car The term "Bank 1" on vehicles with V-engine and flat layouts refers to the side where the number 1 cylinder is located. It does not include diagnosis costs. *Please note: These cost estimates are based on market rates from the time of writing in December 2022. FTC Disclosure 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. Ignition Lock Cylinder Replacement Cost: 2023 Price Comparison, Rear Bumper Replacement Cost: 2023 Price Comparison, Oil Pan Gasket Replacement Cost: 2023 Price Comparison, How Much Does The System Too Lean Bank 1 Repair Cost? If possible, try to check the valve inside it while you open and close it with your diagnostic tool. Labor is very cheap, so you might be better off letting the mechanics take care of this one. The O2 sensors have the ability to correct a fuel mixture of +-15%. Bank 1 refers to the oxygen sensor on the number one cylinder of a V-6 or V-8 engine. Yes, Vacuum or intake leaks, low fuel pressure, a defective PCV valve, or a faulty MAF sensor are the most typical reasons for the P0171 code. This is the case because the O2 sensors are located in the exhaust. This bank is where cylinder number 1 is located, that's why in the error message it says bank number 1. 47K views 2 years ago HOW TO FIX SYSTEM TOO LEAN BANK 1 OR BANK 2 ON FORD If you have Ford, your engine light is on and you have code that indicates that your fuel system is too lean.