Po171 ford - P0171: jelentése, okai, javítások. A megfelelő levegő/üzemanyag arány fenntartása érdekében a motor vákuum- és üzemanyagnyomásának a gyártó által előírt értékeken belül kell lennie. A P0171 kód azt jelenti, hogy a motor első sorában az üzemanyagrendszer gyengén működik, vagy a motor ezen oldalának közelében ...

 
January 24, 2023 by Jason. One of the most common trouble codes with the Ford Crown Victoria is P0174. It indicates that your Ford Crown Victoria is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list .... Harry potter and the escape from gringotts ride

Code po171 7 po174. your computer is reporting bank 1 and 2 too lean, usually caused by the mass air flow (MAF) sensor, you can usually clean this sensor and reset the light. Clean it with electric cleaner or brake cleaner, make sure it is dry before reinstalling, also take care not to damage it.2007-2010 ford fusion p0351, p0352, p0353, p0355, p0356. the misfire P042 ford fusion P0001 code 2013 fusion 2.0 ecoboost. reset many times. p0001 and i'm Overhauled ford fusion 1.4 16v manual engine. ... P072 fusion Vin 3l l4 Free 1.5 liter ecoboost short blocks from ford customer satisfaction. Code po171 ford f150.Re: P0171 P0174 What I have done and What Next? ... Codes 171/174 are Ox Sensors both banks 'telling you' the intake is running with excess ' ...Ford engineer Victoria Schein has some great advice for young girls....F Victoria Schein was the only woman in her internship group at Ford (F) "I learned that it's ok to be the on...The Ford Motor Company is one of the most iconic and recognizable car companies in the world. It has been around since 1903 and has been producing some of the most iconic vehicles ...A 1955 Ford Thunderbird convertible is a classic American collectible, with style, power, and charisma. Learn more about the 1955 T-bird convertible. Advertisement Style, power, an...P0171And P0174 99 Ford F150 My truck is a 99 ford f150 and starting to pee me off. The codes are P0171 and P0174(running lean in bank 1 and 2). I've done the intake gasket, new pcv pipe behind the intake, new injector assembly kit, new MAF sensor, spark plaugs o2 sensors, fuel pump and a fuel filter.Feb 1, 2010 ... PAY IT FORWARD . . . Please help me keep all my resources FREE for everyone to learn from and use.How to determine the cause of a lean condition on a Ford 5.4 engine. How to locate a vacuum leak without a smoke machine.For more information on this topic, ...Symptoms: P0171 + P0174 Ford Flex. 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 Flex has codes P0174 and P0171.2004 TB EXT, 5.3 L. The last couple of winters, when the outside air is cold, would throw the P0171, but I never noticed any change in performance, and it would not throw a code on warm days, so I ignored it. This winter, about four times has gone into REP mode. After the first time, I cleaned the MAF sensor—would still throw the P0171 on ... 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 . Dec 4, 2020 ... One video said it was fuel injectors and lots of comments some from ford techs are saying p0171 is 99% of the time fuel injectors on the 2.0 ...Jul 7, 2020 · 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. 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...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.P0171 is a diagnostic trouble code that indicates the fuel injection system is too lean. It can be caused by intake air leaks, oxygen sensor problems, fuel injectors, exhaust …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 …The most common cause of the P0171 DTC is having an aftermarket intake that is not tuned for. Other common causes include vacuum leaks, exhaust leaks, a clogged fuel system (injector, pump, regulator), or faulty MAF, O2, or fuel pressure sensors. Most often it is an intake or vacuum leak causing the code.Jun 16, 2011 · This article will help you to diagnose diagnostic trouble code P0171 (System Too Lean Bank 1) and/or P0174 (System Too Lean Bank 2) on your Ford, Mercury or Lincoln 4.6L or 5.4L equipped car, pick up, van or SUV. Although you can apply this info to any Ford vehicle with a V6 or V8, this info concentrates on the Ford 4.6L and 5.4L V8 engines. 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. 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...Mar 7, 2022 ... Ford Shelby GT500 Forum banner · Ford Shelby GT500 Forum. in this thread in this sub-forum in the entire site. Advanced Search. Cancel. Login ...p1131 p1151 p0171 p0174 p1131 p1151 p0171 p0174 All of these p1131 p1151 p0171 p0174 codes indicate a problem with a lean condition. This engine is known for vacuum leaks, so before you start throwing oxygen sensors at the problem, it pays to perform some diagnostics. Start by cleaning the MAF sensor. Spray the sensor with CRC MAF sensor cleaner.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix P0174 =====Engine Code P0174 Saving Repair ...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.A Ford P0171 is a LEAN code for cylinder bank 1, and P0174 is a LEAN code for cylinder bank 2. These codes commonly occur on many Ford vehicles, and are set when the powertrain control module (PCM) sees the air/fuel mixture is running too lean (too much air, not enough fuel). A P0171 lean code for bank 1 is the cylinder bank on the RIGHT ...What is Ford Ranger code P0171 and what does it mean? The Ford Ranger code P0171 refers to a diagnostic trouble code that indicates an engine running too lean on bank 1. …One of the most common trouble codes with the Ford Freestyle is P0171. It indicates that your Ford Freestyle 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. The mostJanuary 24, 2023 by Jason. One of the most common trouble codes with the Ford Escape is P0171. It indicates that your Ford Escape is running lean on the bank …Jan 28, 2011 ... A Ford P0171 is a LEAN code for cylinder bank 1, and P0174 is a LEAN code for cylinder bank 2. These codes commonly occur on many Ford vehicles, ...P0171 ford code: system too lean (bank 1) causes, costs, fixes Ford p0174 po171 po174 bank f150 lean system too 2001 ranger p0171 codes egr intake source fault windstar valve air P0171 ford f150 code. How to Diagnose OBD II …This condition is typically caused by a fuel delivery system concern that restricts or limits the amount of fuel being delivered to the engine.Russians are buying more SUVs, and Ford wants a bigger piece of the action. The US carmaker will start producing two 4x4s—the Escape and the EcoSport, in Russia. Local production w...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 …One of the most common trouble codes with the Ford Expedition is P0174. It indicates that your Ford Expedition is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list ofCode po171 7 po174. your computer is reporting bank 1 and 2 too lean, usually caused by the mass air flow (MAF) sensor, you can usually clean this sensor and reset the light. Clean it with electric cleaner or brake cleaner, make sure it is dry before reinstalling, also take care not to damage it.2017 Ford Explorer XLT 2.3L (H 99H) 6-spd (6F55) — 1FM5K7DH0H⦁⦁⦁⦁⦁⦁⦁. P0171 — System Too Lean Bank 1. No Symptoms. I am trying to chase down a P0171 on this Explorer. It runs great, but the LTFT is 27% at idle and 13-14% cruising at approx 30-35. I have smoke tested thoroughly and found no leaks. I have disconnected the purge ...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.1. Low Fuel Rail Pressure and Plugged or Blocked Fuel Injectors, Filters, or Pump. Fuel rail: Check the fuel rail’s pressure. If the pressure isn’t high enough, that’s a sign your …Dec 4, 2020 ... One video said it was fuel injectors and lots of comments some from ford techs are saying p0171 is 99% of the time fuel injectors on the 2.0 ...Oct 26, 2009 ... PO171 is what popped up..too lean..more air then fuel entering the engine. He reset the light, and it came back on after the car had been shut ...Video on diagnosing a 1997-2003 Ford F150 Pickup with the 4.2 engine that has the code P0171, system too lean bank 1, and a P0174, system too lean bank 2.htt...How to determine the cause of a lean condition on a Ford 5.4 engine. How to locate a vacuum leak without a smoke machine.For more information on this topic, ...Ford f150 Focus ford p0171 p2195 code autos post Focus p0171 2006 code zx3 ford engine check forum o2 sensors. 2014 Focus 2.0l trouble code p0480 customer stated car ran hot. Ford focus p0171 2003 p2004 codes zx5 forum P0171 dtc, please help!!!! 2003 ford focus zx5 codes p2004 and p0171. P0171 code help forum freeze frame dataTo diagnose the P0171 1997 Ford F150 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.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.Some of The Other OBD II Codes That Are Related to P1131 on Ford Vehicles are-P1137; P1151; P1157 P0171; P0174; Symptoms of P1131 on Ford. The most visible symptoms of the P1131 code is-Check Engine light ‘ON.’ Slow Acceleration; Poor fuel economy; Car Unable to Start; Moreover, there are some other symptoms for the P1131 code on Ford.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 ...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.The P0171 code is a common diagnostic trouble code that indicates a lean condition in the engine’s fuel system. It often points to potential issues with the mass air flow sensor, …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.Some of The Other OBD II Codes That Are Related to P1131 on Ford Vehicles are-P1137; P1151; P1157 P0171; P0174; Symptoms of P1131 on Ford. The most visible symptoms of the P1131 code is-Check Engine light ‘ON.’ Slow Acceleration; Poor fuel economy; Car Unable to Start; Moreover, there are some other symptoms for the P1131 code on Ford.Ford Engine Code P0171 refers to a diagnostic trouble code that indicates a condition of a lean air-fuel mixture on Bank 1 in the engine. This means that there is too much air and not enough fuel entering the combustion chamber, resulting in an imbalance that can adversely affect engine performance.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. Ford codes P0171 and P0174 indicate a lean fuel mixture problem, typically caused by vacuum leaks or a faulty mass airflow sensor. To diagnose and fix these codes, you can start by inspecting the intake system for any cracks, loose connections, or disconnected hoses. Also, check the air filter and clean or replace it if necessary.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 ... To diagnose the P0171 2006 Ford F150 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.Jan 19, 2018 · 67 posts · Joined 2014. #1 · Jan 19, 2018. Engine light came on for the second time in about 2 months, scan it and is for code p0171 system to lean bank 1 (air to fuel mixture ratio), no noticeable symptoms, idles fine and drives fine, first time I reset it second time the light went away on it's own, has anyone experience this symptom and if ... 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...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 …1997 Ford f-150 codes P0171 & P0174 I have a Ford F-150, 4.2L, V6, with about 141,000 miles on it. I replaced the sparks plugs and wires because it had not been done in a year and a half, and the truck was starting to … 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 . 2014. Posted May 6, 2019. 2014 Fusion with 2.0L ecoboost. I occasionally receive the P0171 code (lean bank 1). It may go away for a month and then comes back. Using my odb2 reader, the sort term fuel trim is good but the long term fuel trim is high at idle. At idle it is typically 22 to 27. Under acceleration it appears to drop …Today, we will be discussing the Ford P0171 code, what it signifies, and the steps to rectify it. The P0171 code indicates a system too lean, specifically on bank one of the engine. This imbalance between the amount of air and fuel being received by the cylinders triggers the onboard computer, signifying that the air-fuel ratio is off.The consumption of fuel increases whenever there is an issue with the air-to-fuel ratio of the gasoline mixture, not just for the P0172 trouble code in Ford. As a result, the fuel economy becomes much worse, and you’ll have to fill up your fuel tank more often. However, this symptom could also mean a p0022 ford f150.One of the most common trouble codes with the Ford Expedition is P0174. It indicates that your Ford Expedition is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list ofThe PO171 Ford code can be caused by several factors, including a vacuum leak, faulty oxygen sensor, clogged fuel injectors, low fuel pressure, or a malfunctioning mass air flow sensor. These issues can disrupt the air-fuel ratio, leading to a lean mixture condition.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 ... 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. If you have one or more fuel injectors that have gone …PO171 PO174 The codes from HELL!!! Finally fixed. Maybe this will help you!Check out My Amazon Auto Accessories Store! Lets make that Weekend job less Painf... PO171 PO174 The codes from HELL!!!P0171And P0174 99 Ford F150 My truck is a 99 ford f150 and starting to pee me off. The codes are P0171 and P0174(running lean in bank 1 and 2). I've done the intake gasket, new pcv pipe behind the intake, new injector assembly kit, new MAF sensor, spark plaugs o2 sensors, fuel pump and a fuel filter.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 …Jul 10, 2021 · The service bulletin for Nissan Maxima dated March 2004 mentions replacing an air/fuel sensor as a solution for the code P0171. Another Ford TSB for a number of late 90-s Ford vehicles describes a problem with MAF sensor contamination where both codes, P0171 and P0174 would appear together. One of the most common trouble codes with the Ford Freestar is P0171. It indicates that your Ford Freestar 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. The mostThe Ford Tri-Motor was a classic airplane used for military and other applications. See specifications for this classic airplane. Advertisement The Ford Tri-Motor classic airplane ...2. Ford. Ford engines often have vacuum leaks or a broken solenoid for the EGR or other components, which causes a faulty air-fuel mixture and then causes the trouble code. Check the code memory with a diagnostic scanner to see if you can find any trouble codes about the air-fuel mixture. If everything looks fine, check for exhaust leaks.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. If you have one or more fuel injectors that have gone …January 24, 2023 by Jason. One of the most common trouble codes with the Ford Crown Victoria is P0174. It indicates that your Ford Crown Victoria is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list ...P0171 indicates that your Ford F350 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 ...Jonah Oneal. 14092 Answers. SOURCE: getting a code po171 on a '98 ford expedition...O2. CODE PO171 -SYSTEM ADAPTIVE FUEL TOO LEAN. POSSIBLE CAUSE.AIR LEAKS AFTER THE MAF SENSOR OR LEAKS IN THE PVC SYSTEM. EXHAUST LEAKS BEFORE OR NEAR WHERE THE HO2S IS MOUNTED. FUEL INJECTORS RESTRICTED …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.What Does The P0171 Code Mean? Diagnostic trouble code (DTC) P0171 stands for “System Too Lean” (Bank 1). The air-fuel mixture with too much air and little …What Does The P0171 Code Mean? Diagnostic trouble code (DTC) P0171 stands for “System Too Lean” (Bank 1). The air-fuel mixture with too much air and little …P0171 indicates that your Ford Edge 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 …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 …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.When he put fuel in he car it would stumble and die, I show how to test purge solenoid and replace it

P0171: jelentése, okai, javítások. A megfelelő levegő/üzemanyag arány fenntartása érdekében a motor vákuum- és üzemanyagnyomásának a gyártó által előírt értékeken belül kell lennie. A P0171 kód azt jelenti, hogy a motor első sorában az üzemanyagrendszer gyengén működik, vagy a motor ezen oldalának közelében .... Watch what happens live tickets

po171 ford

Jan 19, 2018 · 67 posts · Joined 2014. #1 · Jan 19, 2018. Engine light came on for the second time in about 2 months, scan it and is for code p0171 system to lean bank 1 (air to fuel mixture ratio), no noticeable symptoms, idles fine and drives fine, first time I reset it second time the light went away on it's own, has anyone experience this symptom and if ... Taking a look at this escape with the p0171 and p0174, find a leaking fuel injector and change the seals.2007-2010 ford fusion p0351, p0352, p0353, p0355, p0356. the misfire P042 ford fusion P0001 code 2013 fusion 2.0 ecoboost. reset many times. p0001 and i'm Overhauled ford fusion 1.4 16v manual engine. ... P072 fusion Vin 3l l4 Free 1.5 liter ecoboost short blocks from ford customer satisfaction. Code po171 ford f150.Nov 23, 2014 ... In this video I go over another common cause for lean codes on the 4.0L SOHC Engines. New R/C Channel R/C Addict Makuloco- ...P0171: jelentése, okai, javítások. A megfelelő levegő/üzemanyag arány fenntartása érdekében a motor vákuum- és üzemanyagnyomásának a gyártó által előírt értékeken belül kell lennie. A P0171 kód azt jelenti, hogy a motor első sorában az üzemanyagrendszer gyengén működik, vagy a motor ezen oldalának közelében ...P0174 indicates that your Ford F150 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.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...Sep 14, 2023 · Let’s take a quick look at a brief of the P0171 code below. P0171 Definition: System Too Lean (Bank 1) Code type: Generic – P0171 indicates the same problem whether you’re having a Chevy, Ford, or Toyota, etc. Can I drive with the P0171 code? Yes, but you should not drive your vehicle for a long time. Is it easy to fix? Intermediate level. 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 7, 2018 · 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. If you have one or more fuel injectors that have gone bad, that can ... .

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