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 clogged fuel filter can cause the same issues as a fuel pump. Another part you may need to replace to help with a too-lean engine issue is the fuel pressure regulator. 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. The P0171 code is a serious issue. 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. 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. Other issues, such as a bad PCV valve, can contribute to the P0171 code, and a broken O2 sensor may not be the actual issue causing the engine to run lean. Labor: 1.0. With over 15 years in the automotive industry, scott has developed a deep understanding of the engine rebuild process. In order to maintain a proper air/fuel ratio, the vacuum and fuel pressure of the engine must be within the manufacturers specifications. 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. Check engine light can mean a lot of things and thats why scanning is a must. 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. Your engine would not like this. System Too Lean Bank 1 Repair Cost [ Labor & Parts], Cost Breakdown for System Too Lean Bank 1 Repair, Fuel Pressure Regulator Replacement Cost ($280), Mass Air Flow Sensor Replacement Cost ($275), Powertrain Control Module Replacement Cost ($950). Terms & Conditions - Privacy Policy - About Us - Contact 2023 CostHack.com - All Rights Reserved. Yes, engine overheating can result in engine self-destruction quickly if not taken care of immediately. This will result in balancing the air to fuel mixture and the engine will keep on working. This results in problems like this with the system too lean bank 1 problem to appear. This extra gas is going to worsen your fuel mileage. When you are having a rough idle, the engine as well is going to try to stall sometimes. Motor Verso is an automotive website; for car enthusiasts, run by car enthusiasts. The average cost to replace a fuel injector is around $675, where the cost of parts is about $475 and the cost of labor is about $200. Some possible causes of a P0171 engine code are. When you put your key on the ignition you should hear a click from the back. If the needed correction is out of this range, the P0174 code will be stored. A system too lean error can result from a number of different problems with the fuel intake or the exhaust. Fuel injectors are the next most common cause of a lean bank error. The code ideally results in the engine running badly, which the driver will notice as a high idle, a misfire, a loss of power, or even engine stalling. Brandon showed up ahead of schedule, was very personable and diagnosed my problems. Can a dirty air filter cause a P0171 code? This is a lean condition or a low fuel trim code. This bank is where cylinder number 1 is located, thats why in the error message it says bank number 1. Two main areas for this would be the intake system, usually after the MAF sensor, or a vacuum leak somewhere in the intake. Made with in Silicon Valley. As we said, when the air to fuel mixture is not 14.7 to 1, it means that some symptoms are going to develop. How To Pre-qualify For An Auto Loan And Is It Worth It? We will cover this basic in the following section to help you determine whether the P0171 error code is serious or not. All our repairs are backed by our 12-month / 12,000-mile warranty. But if you decide to perform DIY work on your car, you can save money on the labor and also learn some things about cars. 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. This is yet another source of the System too lean bank 1 error. This problem often happens because of a dirty MAF sensor that is located on the intake. Can You Pump Gas With Your Car On? The first thing you need to check when dealing with the P0171 code is the MAF sensor. What are the primary causes for the P0171 code? Keep in mind that all these symptoms can be linked to various other options, and it's hard to tell whether it's a P017 code unless you use, recommendations on how to fix the P0171 code at home. This is the case because the fuel pump is not sending enough fuel into the cylinders. William was courteous, and attentive to the issue. Average Cost of Fuel Pump Replacement (Parts) The estimated cost of each repair includes the cost of the relevant parts and the cost of labor required to complete the repair. This is the case because the O2 sensors are located in the exhaust. This is for you to have a better idea of what could go wrong with your engine. This is one of the most common trouble codes in V-6 and larger engines. This, in turn, results in a lean running state. It is not recommended to drive with a P0171 code as it could cause costly engine damage and damage to the catalytic converter. It Hi and thanks for contacting YourMechanic. Imagine that there is too much air into the cylinders, and this air is not ignited. In most cases, the P0171 code is caused by something easy as a vacuum leak or a bad PCV valve. The Truth Revealed! Thats why a lean air to fuel mixture can appear and ruin your engine performance. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230. Finding a trusted mechanic at a reasonable price can be extremely difficult. Our guides, vetted by experts, ensure you are paying a fair price for whatever it is you are looking for. Another factor is the labor cost. Possible Repair Costs for P0172 Start with the easiest things first. In doing so, it will save you thousands on mechanics that often misdiagnose cars, and you will not have to pay a lot of cash to fix problems that do not exist. . System too lean bank 1 have you ever gotten this issue code regarding your vehicles engine? Repair costs can go extremely high if what's triggering the error code is a bad fuel injector. Here, it can be difficult to replace a powertrain control module without going to the dealer. Most common from the top. Bad or clogged fuel injectors can also be one of the culprits for this specific problem with the lean air to fuel mixture. Its a computer in your vehicle that monitors engine functions, so if it isnt correctly monitoring the air-fuel mixture, then this mixture could get imbalanced. The problem is most likely related to mass air flow sensors, faulty vacuum leaks, or bad oxygen sensors. This is the case because the MAF sensors are relatively expensive and cost a lot. In addition, it wont always be necessary to replace the fuel pressure regulator itself. The only way to do so is by scanning the car for codes. This is the case because the fuel injectors do not inject the right amount of fuel if they are clogged. It is very useful to have a code reader and scan the car by yourself. The oxygen sensor is usually located connected to the catalytic converter. In this case, there is too much air in the engine and there is a lack of fuel inside. Here, youll either have to reset the software or replace the control module. Save my name, email, and website in this browser for the next time I comment. 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. Professional Car Scrapping and Recycling: The Ultimate Guide, How To Get The Highest Payout For My Scrap Car? There are basically indicates that there is more air than fuel in this mixture, which is not good, and we usually refer to it as the system running lean. You just plug in your OBD2 scanner into the port and scan the car for codes. In any case where your first bank of cylinders is receiving too much air in the mix, youll get this notification. Learn more about fuel pump replacement costs here. More specifically, with the issue of the system too lean bank 1 problem. This means youll have to diagnose the cause of the error code before you can get a good quote. In most cases, you can replace this part for $300 or less. Cost of diagnosing the P0171 code. Simply put; yes, get it checked out, if the gasket gets bad enough it will cause the engine to randomly . P0171 or System Too Lean Bank 1 indicates a lean condition, caused by too little fuel or too much oxygen in the exhaust. This article explains the P0171 code causes, symptoms, and its fixing cost. Ask me anything. However, youll still have to check the pump, the filter, and the pressure regulator. Here, most dealerships will charge around $145 per hour. Inspect it and check for any dirt on the sensor. P0171 Chevy Cruze - Fuel System Too Lean (Bank 1) Meaning Your engine needs the proper mixture of fuel and air to operate effectively. If this doesnt help, it means that there is something wrong with the sensors. If you see this generic code, it's likely a problem in the exhaust system. However, it also means that the cause of the issue can vary, and this will impact the cost of repair. This check engine light can be pretty annoying and you are probably will not enjoy it when you see it on your dash. If the valve is stuck open or closed, vacuum pressure will change, meaning that you could have too much or too little air in the fuel mixture. Im saying this because a new O2 sensor is fairly expensive, and if you replace it by mistake you will waste your money. If all of these tests are completed, and no problems are detected, the issue is most likely with the powertrain control module. Junk Car Buyers with No Hidden Fees: Maximize Your Profits Today! 10 Tips, Sell Your Junk Car Online: The Pros And Cons, The Process of Scrapping A Junk Car for Cash: A Detailed Guidance, Trustworthy Junk Car Buyers with Free Towing: Free Junk Car Pickup. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. The older your vehicle, the less likely it is to have an onboard diagnostic. The fuel pump is a little more expensive and costs somewhere between $1300 and $1700. On the other hand, normal shops often charge around $50. The P0171 code will require a diagnostic check. However, its always a good idea to check the regulator. Learn more about our writers on our about us page. Mr. Dan Barber was quite patient, courteous and quite knowledgeable. However, its very common that simply cleaning the fuel injectors will resolve the issue. A dirty MAF sensor is one of the most common causes of P0171 in a Ford. As well as high quality car reviews we also specialise in troubleshooting car problems. It all depends. Another symptom that comes along with the low engine power is the rough idle. For example, if the mass airflow sensor is damaged, you can expect to pay a hefty price of $200 for a new part. What the P2113 P0171 is a diagnostic trouble code (DTC) for "System Too Lean (Bank 1)". Most auto repair shops charge between $75 and $150 per hour. In this article, we are going to learn everything about the P0171 code. When the PCV valve and the EVAP solenoid fail, they allow too much air to be inserted into the engine. When the engine becomes too lean, then combustion chamber becomes very hot causing the head gasket to burn, valves begin to burn, and the rings being to seize up. The fuel pressure regulator monitors the fuel pressure in the engine, and if it isnt working, you wont achieve the necessary air-fuel ratio. But what about the culprits? If you dont have one, figuring out whats going wrong with your vehicle could require significant trial and error as you test and check every part that could potentially cause the issue. A guide on how to diagnose & repair problems causing the P0171 trouble code. The mass airflow sensor is the most common issue, because it easily accumulates dirt. Based on our experience, dealing with a P0171 code might cost you somewhere between $800 and $1500. The Air-To-Fuel Mix Too much fuel might be related to a lot of fuel supply or insufficient air supply. To fix the P0171 code, you need to check and repair vacuum leaks, repair low fuel pressure, or replace any faulty sensor that can cause a lean mixture on bank 1. Here, the regulator will have to lose pressure in order to cause problems. Symptoms of a P0171 code include a check engine light, loss of power, rough idling, misfiring, and white spark plug tips. Vacuum leaks are considered the second most common cause of the system to lean error. While the fuel pressure regulator monitors the engines fuel pressure, the fuel injector(s) have the job of regulating fuel pressure in each cylinder of the engine. Welcome to Motor Verso. Diagnosis: The most common cause of P0420 is a . And what about the costs? A Comprehensive Guide, 10 Junk Car Selling Tips: Get the Most Cash For Your Junk Car, Instant Cash for Junk Cars: Get Fast Offers for Your Old Vehicle. Most people wont have to go as far as replacing their vehicles PCM to alleviate the System too lean bank 1 problem. All our repairs are backed by our 12-month / 12,000-mile warranty. When you take your car to a mechanic for diagnosis, most will begin with an hour of labor diagnosing your specific issue. If a vehicle has this code stored in its powertrain control module, the engine of that vehicle simply will not run well. Driving a car with the code P0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion temperature is higher. Test other components as well because you never know where the problem lies. Get a fair and transparent estimate upfront. Local Junk Car Buyers: Who Buys Junk Cars Near Me? A vacuum leak or a poor fuel system that does not inject enough fuel into the air-fuel mixture can cause lean conditions in a Chevy, while a dirty or defective MAF sensor or a vacuum leak downstream of the MAF sensor may cause P0171 in a Toyota. Download the Way app for all Technical service bulletins specific to the car model should also be checked to avoid misdiagnosis. Youll also have to consider that if your job takes less than an hour, the shop will probably round the cost up to an hour of work. Labor is very cheap, so you might be better off letting the mechanics take care of this one. The fuel pressure regulator controls the pressure of fuel entering the fuel injection system. Below, well compare the average cost of these repairs among different vehicle makes and models to give a more comprehensive guide, looking at the price of both parts and labor. 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. 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 . for $154.99 Repairing the P0171 issue may require replacing parts such as a vacuum leak fix, MAF sensor, fuel pump, fuel pressure regulator, or oxygen sensor, with estimated costs ranging from $100 to $1700 depending on the repair. If your onboard software is misreading data, youll get errors. Depending on the shop's labor rate, this typically costs somewhere between $75-$150. Replacing the fuel injector is going to be pretty pricey, no matter what type of vehicle you own. One of the very common error codes that you might deal with is a P0171 code related to having more air than fuel in the air-fuel mixture. Most mechanics will check the mass airflow sensor first if youre having issues with fuel injection. Then, if you have them do the repairs, many, if not most, businesses will apply this diagnosis cost to any required repairs. All this extra air could not be properly ignited per one revolution of the engine. However, if you do, its going to be pretty expensive since youre replacing a small computer. He also scheduled my next appointments which will be with him. If the gasket on the intake manifold is too old, then replacing it with a new one will be a good idea. In some cases, you may need to turn to the powertrain control module to find the source of a System too lean bank 1 issue. Repair manuals and owner's manuals are very helpful for this purpose. Note that you can save a couple of hundred dollars by taking the DIY route, but even those with standard car models will have to part with a few hundred dollars for a new injector. However, other factors can potentially contribute to the P0171 error code. You must use the OBDII scanner and ask it to clear any inactive error code. A common diagnostic mistake is to start replacing parts without making a proper diagnosis.