P0171 ford - Request More Information. Body Style: Sport Utility. Model Code: U9G. Engine: 1.5L I3 12V GDI DOHC Turbo. Drive Type: AWD. Transmission: Automatic. Ext. Color: Agate Black …

 
1997-2006 Expedition & Navigator - 2003 Ford Expedition P0171 lean bank 1 - Hello! I have been having issues with the P0171 bank 1 lean code. My LTFT1 sits at about 13-15% idle, at 2500 RPMs it jumps to about 20%, and at 3500RPM it hits +25%. The first thing I thought of when i seen the the percentage jump with RPM.... Kendamil stage 2

P0171 - System Too Lean (Bank 1) Description: The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1, Powertrain Control Software Fuel Trim for more information. Possible Causes: Fuel System:Symptoms: P0171 + P0174 Ford F250. 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 F250 has codes P0174 and P0171. On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes. This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses ... The P0174 code means that the O2 sensor on bank 2 has recognized a too lean mixture, and the imbalance is too great for the O2 sensor to correct the issue on its own. The O2 sensor can correct a fuel mixture of +-15%. If the needed correction is out of this range, the P0174 code will be stored.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 ...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 ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈===== How to Fix P0171 =====Engine Code P0171 Saving Repair...2004 - 2008 F150 - Code P0171 and Code P0022 - Hey all, No posts for long time, however in my 2004 F150 with 125,000 on the clock I was driving around and it started bucking and not running well. Shut her down, restarted and it was ok. Then I drove on a bit and it started again, threw a light.May 22, 2023 · 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 most important aspects of this issue. This 2004 F-150 has leaned codes P0171 and P0174. Having both codes indicates that whatever is causing these lean codes is affecting both sides of the engine...Check engine code p0171 twinflamedesign. 1999 ford explorer p0171 and p0174 codes / expedition código p0171Check engine light with codes p0171 and p0174 Ford p0171 p0174 code solution problem forums truckSolution to my code p0171, p0174 problem. Explorer p0403 fault egrP0171 p0174 dtc decoded How to fix car hesitation …Mar 3, 2021 ... Someone scanned and found p0171 and p0174 and automatically changed the mass air the codes came back. I used a smoke machine and found the ... If your vehicle was a full-size pickup, like the Ford F-150, expect that number to rise to $500. Fuel injector cleaning services can go for between $100 and $200. 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. The P0171 code on your Ford vehicle indicates a system too lean condition in bank 1. This means that the engine is receiving too much air and not enough fuel. To diagnose and fix this issue, you should start by inspecting the intake system for any leaks or vacuum hose problems. Additionally, you may need to check the Mass Air Flow (MAF) sensor ... 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. P0171 is a diagnostic trouble code (DTC) for "System Too Lean (Bank 1)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 . 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.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. Fuel Injectors. P0171 indicates that your Ford F250 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.In this video, I fixed the source of the P0171 code on my 2001 Ford F-150. This code means the O2 sensors detected a lean fuel condition in bank 1 of the eng...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 …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 10, 2018 · Fuel Injectors. P0171 indicates that your Ford Explorer 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. Oct 9, 2018 · P0174 indicates that your Ford F250 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 P0174. It’s unlikely that you’ll see P0171 if this is the case. The P0174 code means that the O2 sensor on bank 2 has recognized a too lean mixture, and the imbalance is too great for the O2 sensor to correct the issue on its own. The O2 sensor can correct a fuel mixture of +-15%. If the needed correction is out of this range, the P0174 code will be stored.Jun 30, 2022 ... Share your videos with friends, family, and the world. 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. 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 Ford F150’s ECM will either draw in more oxygen or add more fuel to provide more combustion to keep the truck going. The code P0171 also signifies the ECM adding in more fuel during a lean condition. Although the problem is not as severe as some other engine issues, it is recommended to treat it as early as when you see the signs.Ford’s F-series of pickup trucks has been around for more than a century, and the model has been among the most popular vehicles for decades. The F-150 has been the best-selling tr...I will show you some tips and tricks I learned while fixing the lean codes on my 2003 Ford F150 with the 4.2L V6. A perpetual P0171 code was preventing me fr...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 ...Interference engines made by Ford include its 1.6-liter single overhead cam engine, 2.0-liter double overhead cam engine, 2.2-liter engine, 3.0-liter single overhead cam engine and...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. May 22, 2023 · 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 most important aspects of this issue. When he put fuel in he car it would stumble and die, I show how to test purge solenoid and replace it1997-2006 Expedition & Navigator - 2003 Ford Expedition P0171 lean bank 1 - Hello! I have been having issues with the P0171 bank 1 lean code. My LTFT1 sits at about 13-15% idle, at 2500 RPMs it jumps to about 20%, and at 3500RPM it hits +25%. The first thing I thought of when i seen the the percentage jump with RPM...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈===== How to Fix P0171 =====Engine Code P0171 Saving Repair...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.This 2004 F-150 has leaned codes P0171 and P0174. Having both codes indicates that whatever is causing these lean codes is affecting both sides of the engine...Feb 12, 2017 ... It is unusual to have both a lean and rich trouble code at the same time. In this video, I will show you the steps involved to identify this ...Apr 12, 2017 ... My car is throwing a P0171 code and I'm not sure why. A few Google searches have informed me that it could be a number of things causing ...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...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.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 ...I had a fuel smell and and engine miss. codes p1450,p0136,p0156,p1131. P0171 ford f150 code fix P0022 ford f150 5.4 code ford p0171 codes 1999 f150 sensors p0135 o2 How to replace maf sensor on ford f150 fix lean codes p0171 p0174Fuel 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.Nov 30, 2023 · The most common problems that trigger the P0171 fault code are: Bad MAF (mass airflow sensor) Bad injectors. Bad O2 sensors. Vacuum leak. A malfunctioning or bad PCM. Clogged fuel filter. Weak fuel pump. Bad fuel pressure regulator. 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 ... 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. 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 …Jul 21, 2023 · Descripción del código P0171 Ford. Este código es un código de diagnóstico de problemas (DTC) que indica que el sistema de inyección de combustible de su vehículo no funciona correctamente, especialmente en la Serie 1. En pocas palabras, significa que el motor no está recibiendo suficiente combustible para la cantidad de aire que está ... Fuel Injectors. 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.Rivian's stock price fell more than 17% Monday, a drop prompted by a CNBC report that Ford was selling 8 million shares of the EV automaker. Rivian’s stock price fell more than 17%...Dec 18, 2019 ... Amazon Affiliate link below https://www.amazon.com/shop/influencer-16c863d5?ref=ac_inf_hm_vp http://www.milwaukeetool.com/ #flatratemaster ...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 …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...Descripción del código DTC P0171 FORD Ford. El código DTC P0171 en tu vehículo Ford indica que la proporción o mezcla aire/combustible no se está realizando de ...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 ... Let's have a look at this 97 Ford F150 with the classic P0171 "Lean Bank 1" code that seems to happens to these Fords more often than not. Typically it is a ...Jul 7, 2020 · 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 ... 1997 - 2003 Ford F150 - p0171, p0302 - Trying to figure this one out. I know 0171 is lean on bank one, and 0302 is a misfire on cylinder 2. Replaced spark plug and coil pack on cylinder 2. 2002 f150 5.4 240k miles Engine runs nice and smooth most of the time, but when the code pops up will stumble at an idle, and just...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 ...Aug 18, 2023 · A 4 Cylinder has only Bank-1. Possible Causes of a Ford P0171 Code: Dirty Air Filter Mass Air Flow Sensor (Codes P0100, P0101, P0102, P0103, P0104) Clogged Fuel Filter Fuel Pressure Regulator... 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. 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 ...Mar 4, 2021 ... Ford Shelby GT500 Forum. in this thread in ... P0171 System Too Lean Bank 1 Issue resolved ... For a solid year or more id been trying to tackle the ...Whether you already own a Ford vehicle or you want to be a Ford owner, you can find a Ford dealer near you to purchase a car or get service for the one you own. Use these tips to f...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...The Ford Ranger code P0171 refers to a diagnostic trouble code that indicates an engine running too lean on bank 1. This means that the fuel mixture in the engine is not providing enough fuel for combustion. A lean fuel mixture can lead to a variety of issues, including poor fuel economy, rough idle, and decreased engine performance. Ford DTC P0171. The adaptive fuel strategy continuously monitors the fuel delivery hardware. This DTC sets when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1, Powertrain Control Software, Fuel Trim for additional information. View the freeze frame data to determine the operating conditions when the DTC was set. Fuel Injectors. P0171 indicates that your Ford Mustang 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. 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. 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 ...Meaning. Causes, Symptoms, & Fixes. Causes Identification. Repair Cost. What Does The P0171 Code Mean? Diagnostic trouble code (DTC) P0171 stands for “System Too Lean” (Bank 1). The air-fuel …Whether you already own a Ford vehicle or you want to be a Ford owner, you can find a Ford dealer near you to purchase a car or get service for the one you own. Use these tips to f...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 ...Fuel Injectors. P0171 indicates that your Ford Explorer 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 Transit Connect 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. Code P0171 is very common for high mileage Ford cars and any car pretty much. The code stand for P0171 Fuel System Too Lean Bank 1. We will explain the most …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.May 25, 2022 · Tools needed for diagnosing advanced P0171 code causes: OBD II scanner or code reader. Carburetor or throttle body cleaner. 1. Disconnected or Leaking Hoses. Air Intake Hose: Find the air intake hose that connects to the engine. Grab and shake it so you can feel if anything is loose. I'm getting codes p0171 and p0174. 2004 - 2008 Ford F150 - 2006 f150 5.4 p0171 - I got a 06 f150 that is consistently throwing a lean code p0171 and sometimes a p0174. When I first got truck it had a issue with running and a new fuel pressure regulator sensor fixed that issue. I've smoked tested for vacum leaks coming off the brake booster … 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 18, 2023 · A 4 Cylinder has only Bank-1. Possible Causes of a Ford P0171 Code: Dirty Air Filter Mass Air Flow Sensor (Codes P0100, P0101, P0102, P0103, P0104) Clogged Fuel Filter Fuel Pressure Regulator... 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. 1997-2006 Expedition & Navigator - 2003 Ford Expedition P0171 lean bank 1 - Hello! I have been having issues with the P0171 bank 1 lean code. My LTFT1 sits at about 13-15% idle, at 2500 RPMs it jumps to about 20%, and at 3500RPM it hits +25%. The first thing I thought of when i seen the the percentage jump with RPM...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.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 …

It’s important to diagnose the root cause of P0171 before attempting any repairs, as misdiagnosis or improper repairs can lead to further damage or code recurrence. Sum Up. P0171 is a common fault code that indicates a lean condition on Bank 1 of the engine. The symptoms of P0171 can include poor fuel economy, rough idling, or lack of power. . Small business security systems

p0171 ford

contour98. I've had the CEL on for a while and took it to AutoZone and got the P0171 and P0174 codes. The AutoZone guy says that having both of these codes together (and no others) suggests a bad MAF sensor. With the engine running, he disconnected the MAF sensor then after a few seconds connected it again.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 …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...Nov 5, 2008 ... P0171=Lean Bank 1, P0174=Lean Bank 2. These codes are set when the fuel trims max out. This means the PCM is adding all of the fuel it can and ...Hi Ed, P0171 and P174 are fault codes for being too lean (Bank 1 and Bank 2). Are you by chance running a MAFia and, if so, when you returned to ...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.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... It’s important to diagnose the root cause of P0171 before attempting any repairs, as misdiagnosis or improper repairs can lead to further damage or code recurrence. Sum Up. P0171 is a common fault code that indicates a lean condition on Bank 1 of the engine. The symptoms of P0171 can include poor fuel economy, rough idling, or lack of power. 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?P0171 fuel ford lean bank too system toyota mixture fault air code causes injection sensor fix car ratio oxygen heated. P0171 code: vacuum leak test on my 2007 mustang gtFord sensor dpfe ranger location egr code codes valve p0171 p0174 lean gas engine v10 p1406 fix p1401 2008 exhaust Mustang ford p0340 code engineSolution to …P0174 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 P0174. It’s unlikely that you’ll see P0171 if this is the case.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 ….

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