Jun 30, 2022 ... Share your videos with friends, family, and the world.Aug 12, 2010 ... The P0171 code means it's bank 1, which is the side that has cylinder #1. You could have an exhaust system leak, bad O2 sensor, intake manifold ...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. OBD-ii Code P0171 definition: Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time. The P0171 trouble code stands for System Too Lean (Bank 1) which means that the vehicle’s computer has detected insufficient fuel flow or increased oxygen flow in the first bank of the engine and both scenarios lead to ”lean condition”. ... Ford: Yes: $100 – $500: Fiat: Yes: $80 – $400: Peugeot: Yes: $100 – $500: What Repairs Can ...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 …P0171 indicates that your Dodge Ram 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 ...A P0171 code is set by your vehicle’s powertrain control module when the air-to-fuel ratio is too lean. This means that the engine is receiving too much air into the …The Ford Taurus usually has three engine mounts--one mount each on the left and right sides of the front of the engine, and one mount for the rear of the engine and the transmissio... P0171 and P0174 are diagnostic trouble codes that indicate the engine has a lean fuel mixture. They are triggered by the upstream oxygen sensors on the engine bank 1 or 2. The symptoms include surging, misfires, spark knock, rough idle and reduced power. The causes can be vacuum leaks, fuel issues, intake problems or MAF sensor problems. To diagnose the P0171 2010 Ford Fusion code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. El código P0171 Ford en español es bastante habitual en las camionetas y nos indica que el sistema es pobre. Es decir, se está dando una combustión incompleta con mezcla inadecuada de aire y combustible. Revisa todas las comprobaciones que te hemos indicado en este artículo para intentar solucionar el aviso de code P0171. 1 1. 1983 - 2012 Ranger & B-Series - 2.3L w/ P0171 code - I have had this truck for about 6 months now. When I first got it, it had the P0171 code and was running a bit loopy, popped the hood and sure enough the hose to the pvc valve was disconnected. That fixed that problem for a while.HI Everyone: This is a 2001 Ford Expedition with a 4.6 liter engine, no complaints from the customer other than the check engine light is on. This video show...In the most literal sense, the P0171 code means “System Too Lean (Bank 1).”. This trouble code points to a lean running engine condition on the first bank of cylinders. Keep in mind that even inline engines can have two “banks.”. For example, the first 3 cylinders of an inline-6 are sometimes defined as Bank 1, while the 3 cylinders are ...Dec 29, 2018 · P0171 indicates that your Ford Crown Victoria 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 ... The P0171 code in a Ford Explorer indicates a lean condition in bank 1 of the engine’s fuel system. This means that there is too much air and not enough fuel being supplied to the combustion chamber. This can lead to rough idling, decreased power, and increased fuel consumption. In order to diagnose and fix the issue, it’s important to ...System Too Lean (P0171, P0174) - Vacuum Leak Quick Test - Ford 5.4 ... This is a Ford Expedition 5.4 with a vacuum leak causing "System Too Lean" trouble codes ...Lester Glenn Ford is your go-to Ford dealership serving the Asbury Park, Eatontown and Tinton Falls, NJ areas. We can help you find your next new car, get you financing, find you the parts you need, and even service your current Ford vehicle. We have a large inventory of new Ford cars and trucks and used Ford cars in Ocean, NJ.Apr 13, 2019 · 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. Dirty MAF sensor, vacuum leak, O2 sensor. Sep 13, 2010 ... I wouldnt be surprised if the EGR code(s) come back, as Ford EGR valves rarely go bad. Failed DPFE sensor is by far the most common cause of 401 ...Ford p0171 trouble codePart 2 -troubleshooting p0171 and p0174 (ford 4.0l v6) P0171 p0174 oxygen hptuners o2 using cleaning accelerating sensors diagnosing codes although axleaddictDiagnosing trouble codes p0171 and p0174. Check Details. System too lean bank 1 repair cost.P0171: význam, příčiny, opravy. Chybový kód P0171 indikuje, že směs paliva a vzduchu je příliš chudá. Může to být způsobeno vstupováním příliš velkého množství vzduchu do motoru nebo nedostatečným množstvím vstřikovaného paliva. Narušení procesu vstřikování se obvykle vyskytne vlivem těchto selhání:The Ford Focus P0171 code indicates a system too lean condition in bank 1, which means there is an imbalance of air and fuel mixture. Popular Mechanics Magazine provides detailed explanations and guides on car diagnostic codes like this one.Here’s a breakdown of effective troubleshooting steps for a P0171/P0174 trouble code: Check all vacuum hoses for leaks, including seals, lines, and hoses to ensure they are properly attached and connected. You can either listen for hissing sounds created by escaping air while the engine is running, or use a vacuum gauge if you have access to one.Are you in the market for a used Ford F-150? If so, you’ve come to the right place. Finding the perfect used Ford F-150 at the best price can be a daunting task, but with a few tip...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, “system” refers to faults in the air/fuel metering system that cause, or contribute to an ...Causes Of P0171 Code In Ford Vehicles. 1. Faulty Mass Airflow Sensor (MAF) The Mass Airflow Sensor measures the amount of air entering the engine to calculate the proper air-to-fuel mixture. If it’s giving incorrect readings, it can cause the engine to run lean.Learn what the code P0171 means for Ford vehicles and how to fix it with this helpful video. Expert tips and clear explanations in Spanish.El código P0171 es genérico nos da a entender que se ha detectado una condición muy baja en el sensor de ... El código P0171 es común en: BMW, Chevrolet Captiva, Chevrolet Sonic, Chevrolet Trax, Chrysler, Ford Explorer, Ford F-150, Ford Focus, Ford Windstar, Honda Civic, Lincoln, Mazda 3, Nissan, Toyota 4Runner, Toyota Camry ...For the Ford F-150 to run efficiently the timing needs to be checked routinely during a tune-up. This will ensure the best performance and gas mileage for the F-150. The procedure ...P0171 indicates that your Ford Flex 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 ...Aug 12, 2010 ... The P0171 code means it's bank 1, which is the side that has cylinder #1. You could have an exhaust system leak, bad O2 sensor, intake manifold ...F150 5.0 P0171 P0174. For the last few months my truck has been throwing an intermittent check engine light due to the same code every time - P0171. The dealer has allegedly checked everything and has given me the "We have done all we can do" speech. Lead tech even suggested that since today's fuels have alcohol in them, that a check …Sep 6, 2022 · In the most literal sense, the P0171 code means “System Too Lean (Bank 1).”. This trouble code points to a lean running engine condition on the first bank of cylinders. Keep in mind that even inline engines can have two “banks.”. For example, the first 3 cylinders of an inline-6 are sometimes defined as Bank 1, while the 3 cylinders are ... Sep 7, 2018 · Fuel Injectors. P0171 indicates that your Ford Taurus 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. Sep 10, 2018 · Fuel Injectors. P0171 indicates that your Ford Windstar 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. Feb 21, 2022 · P0171 is a trouble code that indicates the engine is running lean due to too much air or not enough fuel. Learn how to diagnose and fix this code with FIXD sensor and app, or find a certified shop for professional help. Feb 13, 2011 ... I do need to pull & clean the IC, never been done I think, however the motor was replaced by Ford just under 50K miles. I doubt that they ...In this article, we’ll discuss the common causes of the P0171 code and provide some valuable tips and tricks to help you troubleshoot and get your Ford F-150 running again. We’ll also provide a table summarizing the …Oct 19, 2023 ... This engine is used on the Ford Explorer, Flex, Taurus, Edge, F-150 and more.Symptoms: P0171 + P0174 Ford Edge. There aren’t always drivability issues associated with these codes. For most people the first sign that anything is wrong at all is the service engine soon light coming on. Here are the typical symptoms that something is wrong when your Edge has codes P0174 and P0171.Jan 15, 2018 ... Another case of P0171/P0174... · 1. Fuel system clogged/dirty. Check/replace Fuel Filter. · 2. Exhaust Leak. Check for leaks at the exhaust ...Jul 7, 2020 · 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. Fuel Injectors. P0171 indicates that your Ford Mondeo 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 Ford C-Max 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 …Mar 23, 2015 ... Do you have a 1996-2006 Ford 4.6L or 5.4L engine equipped vehicle with a check engine light and stored codes P0171 and P0174?Definition. 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 …Jul 27, 2014 ... Here's that vacuum elbo on Amazon for about $10 ...Welcome to Ford Ranger Forum Thread Tools: Search this Thread #1 11-23-2017, 08:30 PM louisvilleranger95. Ford Motor Co ... Posts: 161 p0171. 1995 4.0 4x4. i am getting a po171 code for lean on bank one. i have changed 02 sensors on both sides fuel filter and pump and had a shop check for vacuum leaks and found none. i have also …Sep 10, 2018 · Fuel Injectors. P0171 indicates that your Ford Escape 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. Popular Mechanics Magazine can recommend trying a few troubleshooting steps to resolve the P0171 code in a Ford F150. One technique is to check for vacuum leaks using a smoke machine or by spraying carburetor cleaner around the intake manifold and vacuum lines while the engine is running. Another suggestion is to clean or replace the Mass Air ...The Ford Taurus usually has three engine mounts--one mount each on the left and right sides of the front of the engine, and one mount for the rear of the engine and the transmissio...1997 - 2003 Ford F150 - 02' 5.4L F150 Help with code P0171 - I've read all the threads on where to find the most common vacuum leaks and checked all the possibilities still not sure if I've pinpointed the problem? Yesterday, just when I thought I'd confirmed no vacuum leaks I heard my pcv valve making an extremely...Mar 23, 2015 ... Do you have a 1996-2006 Ford 4.6L or 5.4L engine equipped vehicle with a check engine light and stored codes P0171 and P0174?Jul 27, 2014 ... Here's that vacuum elbo on Amazon for about $10 ...El código P0171 es genérico nos da a entender que se ha detectado una condición muy baja en el sensor de ... El código P0171 es común en: BMW, Chevrolet Captiva, Chevrolet Sonic, Chevrolet Trax, Chrysler, Ford Explorer, Ford F-150, Ford Focus, Ford Windstar, Honda Civic, Lincoln, Mazda 3, Nissan, Toyota 4Runner, Toyota Camry ...P0171 indicates that your Ford C-Max 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 …Location: Houghton, MI & Chicagoland. Re: 2002 ford F-150 Code P0171. by Chris's FX4 » Wed Nov 13, 2013 10:52 pm. Try cleaning the MAF first and check the PCV valve itself. Follow the PCV line from the valve on the passenger side valve cover to the back of the intake. There's an elbow back behind the intake up under the firewall, its hard …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 ...Sep 7, 2018 · P0171 indicates that your Ford Fiesta 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 ... Code P0174 Ford Tech Notes. If the P0174 is combined with the P0171 code, the problem is likely caused by an intake leak or the Intake Plenum Gasket and seals. If there are no intake leaks, the next step is to replace the air filter and clean the airflow meter. If the problem persists, the front oxygen (O2) sensor may need to be replaced.Fuel Injectors. P0171 indicates that your Ford Windstar 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.The "Check Engine" light was turned on yesterday on my '98 Expedition EB. I got two codes at the same time: 1. P0171- System Too Lean (Bank 1), and. 2. P0174- System Too Lean (Bank 2). I know either one of these codes can mean something is wrong with air intake, fuel system, or O2 sensor. 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. P0171 and P0174 are diagnostic trouble codes for lean condition in bank 1 and bank 2, respectively. These codes indicate that the engine is receiving too much air or not enough fuel, resulting in a lean air/fuel mixture. The potential causes include a vacuum leak, faulty oxygen sensor, clogged fuel injectors, or a malfunctioning mass airflow ...Senior Master Grease Monkey. Supporting Member. Article Contributor. Ford Technician. TRS 20th ...Oct 2, 2023 · 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. 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.Nov 18, 2019 ... Thanks for the follow up! :cheer: Glad to hear it got fixed. Please Log in or Create an account to join the ...May 3, 2010 ... P0171 - System to Lean (Bank 1) The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The test fails when the adaptive fuel ...Introducing “Ford Engine Code P0171: Understanding the Common Diagnostic Trouble Code” As a Mechanics teacher and enthusiast, it’s crucial to stay updated on the latest developments in automotive technology. In this article, we delve into the notorious Ford Engine Code P0171.This diagnostic trouble code (DTC) is commonly encountered in …The code P0171 means the engine air-fuel mixture is too lean or too rich. It can cause engine problems such as stalling, rough idle, knocking, or low fuel pressure. The web page explains how to diagnose …Oct 2, 2023 · 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. Fuel Injectors. P0171 indicates that your Ford Falcon 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.Ford's got an updated PCV hose for that (rear one in particular) and you can shop online with one of the discount sources or at the Dealer for that one. Generic hose/elbows can be used as well, and aftermarket too. DO need something that works, that's the only requirement.The P0171 code is a generic powertrain code that indicates a lean condition in the engine’s air-fuel mixture. In the context of a Ford Ranger, it specifically points to Bank 1 being too lean. This means that there is either too much air or insufficient fuel getting into the engine on the first bank of cylinders.Ford TSB 23-2195. Some 2021-2023 F-150 vehicles equipped with a 3.3L engine may exhibit an illuminated MIL in the instrument panel cluster (IPC) with DTC P0171 stored in the powertrain control module (PCM). This may be due to the software level of the PCM. To correct this issue, follow the Service Procedure to reprogram the PCM to the latest ...Sep 10, 2018 · P0171 indicates that your Ford Ecosport 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 ... Code P0174 Ford Tech Notes. If the P0174 is combined with the P0171 code, the problem is likely caused by an intake leak or the Intake Plenum Gasket and seals. If there are no intake leaks, the next step is to replace the air filter and clean the airflow meter. If the problem persists, the front oxygen (O2) sensor may need to be replaced.P0171 Ststem to Lean. The adaptive fule strategy continously monitors fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Possible causes. Fuel system. Excessive fule pressure. Leaking/contaminated fuel injictors. Leaking fuel pressure regulator. Low fuel pressure or running out of fule.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, “system” refers to faults in the air/fuel metering system that cause, or contribute to an ...Ford's got an updated PCV hose for that (rear one in particular) and you can shop online with one of the discount sources or at the Dealer for that one. Generic hose/elbows can be used as well, and aftermarket too. DO need something that works, that's the only requirement.System Too Lean (P0171, P0174) - Vacuum Leak Quick Test - Ford 5.4 ... This is a Ford Expedition 5.4 with a vacuum leak causing "System Too Lean" trouble codes ...
The code P0171 means the engine air-fuel mixture is too lean or too rich. It can cause engine problems such as stalling, rough idle, knocking, or low fuel pressure. The web page explains how to diagnose …. Where can i watch fraggle rock
Sep 7, 2018 · P0171 indicates that your Ford Focus 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 ... A P0171 code is set by your vehicle’s powertrain control module when the air-to-fuel ratio is too lean. This means that the engine is receiving too much air into the …P0171 Ststem to Lean. The adaptive fule strategy continously monitors fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Possible causes. Fuel system. Excessive fule pressure. Leaking/contaminated fuel injictors. Leaking fuel pressure regulator. Low fuel pressure or running out of fule.F150 p0171 speedwayF150 2004 p0012 code fx4 Solution to my code p0171, p0174 problemP0171 code ford f150. 2006 f150 4.6 v8 p0174 and p21971997-2003 ford pickup p0171 p0174 system too lean bank 1 bank 2 Ford f150 codes p0171 and p0174. Check Details. Check Details. P0174 Code: System Too Lean (Cylinder Bank 2) Check …When he put fuel in he car it would stumble and die, I show how to test purge solenoid and replace itSymptoms: P0171 + P0174 Ford Freestyle. There aren’t always drivability issues associated with these codes. For most people the first sign that anything is wrong at all is the service engine soon light coming on. Here are the typical symptoms that something is wrong when your Freestyle has codes P0174 and P0171.P0171 indicates that your Dodge Ram 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 ...Introducing “Ford Engine Code P0171: Understanding the Common Diagnostic Trouble Code” As a Mechanics teacher and enthusiast, it’s crucial to stay updated on the latest developments in automotive technology. In this article, we delve into the notorious Ford Engine Code P0171.This diagnostic trouble code (DTC) is commonly encountered in …Diagnostic trouble code (DTC) P0174 stands for “System Too Lean (Cylinder Bank 2).”. Your vehicle’s powertrain control module (PCM) will log this trouble code if it detects a lean running condition in the engine’s cylinder bank 2. The usual causes of a P0174 code are outdated PCM software, vacuum leaks, a bad mass airflow sensor, …The P0171 engine code indicates a problem with your car’s fuel injection system: the air-fuel mixture ratio is too lean. This affects how efficiently the fuel is being used. An incorrect air-fuel mixture ratio can also cause the vehicle to lose power and the engine to overheat.P0171 indicates a lean air-fuel mixture in engine bank 1, causing low power and emissions issues. Common causes include faulty oxygen sensor, mass airflow sensor, PCV system leaks, vacuum leaks, bad air filter, clogged fuel filter, faulty fuel injectors, and exhaust leaks. Symptoms include rough idle, loss of power, misfires, poor acceleration ...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 …Ford p0171 trouble codePart 2 -troubleshooting p0171 and p0174 (ford 4.0l v6) P0171 p0174 oxygen hptuners o2 using cleaning accelerating sensors diagnosing codes although axleaddictDiagnosing trouble codes p0171 and p0174. Check Details. System too lean bank 1 repair cost.If you’re in the market for a used Ford F150, it’s important to know what to look for when searching for one near you. The Ford F150 is one of the most popular pickup trucks on the...Mar 27, 2021 ... P0171,P0172 LEAN BANK 1or 2. The silicone gaskets at the base of the intake to head lose elasticity an sealing. Google the codes and look at ...Aug 12, 2010 ... The P0171 code means it's bank 1, which is the side that has cylinder #1. You could have an exhaust system leak, bad O2 sensor, intake manifold ...Code P0174 Ford Tech Notes. If the P0174 is combined with the P0171 code, the problem is likely caused by an intake leak or the Intake Plenum Gasket and seals. If there are no intake leaks, the next step is to replace the air filter and clean the airflow meter. If the problem persists, the front oxygen (O2) sensor may need to be replaced.Sep 10, 2018 · Fuel Injectors. P0171 indicates that your Ford Windstar 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. Mar 23, 2015 ... Do you have a 1996-2006 Ford 4.6L or 5.4L engine equipped vehicle with a check engine light and stored codes P0171 and P0174?How to fix a Ford P0174 engine code: Fuel Injection System Too Lean Bank 2A lean condition exists if the engine is getting more air than fuel in the cylinder...P0171 indicates that your Ford C-Max 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 ….