Ford f150 p0171 code

P0171. by projectsho89 » Sun Mar 06, 2011 3:12 pm. davemx wrote: no your injectors should be fine it might be your o2 sensors. O2 sensors will NOT cause "lean" or "rich" codes! Check for vacuum leaks, dirty MAF sensors, restricted/weak fuel supplies, exhaust leaks adjacent to the upstream O2 sensors, etc.

The computer now shows codes P0172 and P0174 which means the Bank 1 is rich and the bank 2 is lean. The O2 sensors are working and moving around. The back 02 sensors are both reading in the 0.8Volt range but bouncing around. The front 02 sensors are both moving from 0.1 to 0.8 constantly.Re: '05 4.6L F-150 Missing P0171 P0301. by 3FOX » Sat Dec 17, 2016 12:04 am. The 301 code is a secondary side ignition failure. Since you swapped coils, it leaves the spark plug or cylinder fault. The 171 code for that bank can be the OX sensor is detecting the un-combusted air from that cylinder that has shifted bank 1 fuel table and set the ...Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. Engine / Transmission / Drivetrain. All Other Engines - 4 cyl (Ranger), 300 I-6, etc. Looking for recent topics? OBDII code P0171. 1 post • Page 1 of 1. Epistuff New Member Posts: 1 Joined: Thu Nov 02, 2006 11:37 pm. OBDII ...And at 2000 Rpms I had a bad vibration. Hook up my scanner and I'm getting a P2196 For B1S1 biased/stuck rich. So I begin to look for the issue why it's running rich and only on 1 side. And the exhaust smelled awful. Checked my fuel pressure to start with just to verify its good, and it was.Well, I was looking into this today and decided to pull the codes. The P1506 is gone, and now I have P0171 and P0174. Below is the freeze frame data from the P0171: Calc Load % 43.9 ECT 183 F STFT B1 3.9% LTFT B1 10.2% STFT B2 -2.3% LTFT B2 7.8% Engine RPM 1535 Speed 16mph I really don't know what to make of this data.How I fixed my P0171 and P0174 trouble codes on a 2003 Ford F150.

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...Well, hello everyone. I have a 1998 F-150 and I too am displaying codes P0171 & P0174. After about 10 seconds of a smooth idle then it starts running rough. I, unlike cokerdj will spend 800.00 in parts on this thing. ... P0171, P0174 1996 Ford F-150 4.9L EFI 4x4. Post by ehecoatl » Sun Feb 13, 2011 2:05 am. Gentlemen:Replaced and code cleared.Other than that just P0171. The truck is a 2013 F150 Ecoboost XLT Supercrew 4x4 6.5 box. Save Share. Like. noodles ... F150Ecoboost.net is the best Ford F150 Ecoboost Forum with discussions on 2011+ F150 Ecoboost Trucks. Discuss performance mods, towing questions, wheels, tires, lift kits, and much more! ...2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck. P0171 and p0174 on 4.6 2005. Reply Subscribe . Thread Tools ... I had only the p0171 code. My mechanic said the only thing he could find was a leak in the passenger exhaust gasket. He replaced it and cleared the code about 500-700 miles ago and hasn't came back on yet.1. Age. 63. Nov 24, 2017. #1. While DTC code P0171 and its closely related cousin, P0174, are two of the most common codes to afflict Ford F150 models, almost all Ford models are equally likely to suffer the effects of these codes at some point, and particularly Ford applications that have done more than about 60 000 miles or so.Re: Lean codes P0171 P0174 need suggestions. by terd_ferguson_1 » Tue Jul 29, 2014 5:26 am. If your running the stock intake, something to try is ensure you have a Motorcraft air filter installed, some aftermarket filters can cause issues, as well on your filter door from factory it came with a foam tape on the sides and either bottom or top ...P0171 System too lean, bank 1 System Too Lean (Bank 1) Status: Confirmed Click to search for description on the - Answered by a verified Ford Mechanic

The codes, regardless of which one, is detected by the Oxygen sensors. 171 is lean detection bank 1. As excessive oxygen in the exhaust gas. 175 is rich detection bank 2. As to little oxygen left in the exhaust gas after combustion. . 171 shifts the Long term fuel table for bank 1 to the rich side. When it reaches +25% the code is set.1 / 1. 3.8 & 4.2L V6 - 98 F150 4.2L P0171 code - Have 4,2L with 125,000 miles. Check engine light is on with a P0171 code. When I first scanned the OBD2 there was two codes P0171 and P0174 codes. Changed spark plugs and wires along with a ETC sensor. Cleared codes and drove it few miles, light came back on and P0171 came up....Jul 20, 2022 · To 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. 1997-2006 Expedition & Navigator - P0171 code and long term fuel trim 1 reads high - I have a 99 expedition with the 5.4L. It idles rough and the check engine light is on. When I hooked up my scanner it gave me the P0171 system 1 too lean code. While checking the run time data, I found that the long term fuel trim 1...Re: Lean codes P0171 P0174 need suggestions. by terd_ferguson_1 » Tue Jul 29, 2014 5:26 am. If your running the stock intake, something to try is ensure you have a Motorcraft air filter installed, some aftermarket filters can cause issues, as well on your filter door from factory it came with a foam tape on the sides and either bottom or top ...I just saw the intake and assumed that was the truck in question. 2009 - 2014 F150 - 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.

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Introducing the Article: "Cracking the Mystery of the 2004 Ford F150 P0171 Code" If you've ever experienced the frustrating P0171 code on your 2004 Ford...When a vehicle has the fault code P0171, it means that computer can no longer automatically adjust the mixture between air and fuel. Code P0171 applies to 4-cylinder engines (Bank 1) as they generally have only one bank. If you have a V6 or V8 engine you can also get a P0174 code which refers to Bank 2. When the code says that the fuel system ...FINALLY, p0171 and p0174 problem solved, took it back to dealer to have them check over their work, they found that the intake was warped. they replaced it along with another gasket, i now have about 400 miles on and no light yet.I have a Ford F150 with a 4.2L engine setting trouble codes P0171 and P0174. I have cleaned the MAF sensor, replaced the fuel filter, checked the fuel pressure (which is 32psi at the injectors) and ch … read moreLearn how to diagnose and fix the OBDII code P0171 Ford, which indicates a lean condition in the engine. Find the possible causes, symptoms and solutions on AutoCodes.com.

I had the same issue with my '97 F150 5.4. I also had a P0171 and P0174 and the truck was running fine. PCV was replaced, upper and lower intake manifold gaskets were replaced and MAF was cleaned. Still the CEL with the same codes came back even after I reset the computer. I finally took it to the dealer last Monday.Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. Ford F-150 / F-Series Generations. ... Also for the p0171/p0174 codes found out the MAF sensor I changed out with wasn't working properly. the barametric sensor said I was driving in the moutains. Replaced MAF …Re: P0171, P0174 and P1443 on 1996 Ford F-150. by MookeOVII » Mon Mar 17, 2008 10:08 pm. I have a '96 F-150, 5.0L, that over the last 2 yrs has kept the 171, 174 codes. After cleaning the EGR, MAF, Changing the intake manifold gasket for the newest upgraded version, switching all three O2 sensors, plus the usual filter changes.1997-2006 Expedition & Navigator - 01 Expedition 5.4, codes P0171 and P0301 - I have a 2001 Expedition with a 5.4 and 227,000 miles on it, been having all kinds of misfire problems the past year. The latest is it's running lean on bank 1 and misfire on cylinder 1. Put in new plug and coil on 1.2002 ford f150: scanner..deleted two codes p0171 and p0174..sensors. hello, i have used an obd II scanner on my 2002 ford f150 and deleted two codes P0171 and p0174. I went to smog check it and they said I have to drive it certain amount of time so some of the sensors ...How I fixed my P0171 and P0174 trouble codes on a 2003 Ford F150.Truck: Ford F-150, 4.9L EFI, 4x4 Regular Cab short bed. 100,300 miles. ... I'm REALLY bummed that the troubleshooting of this issue was abandoned. I am experiencing the exact same problems (codes p0171/p0174, rough start) and am not sure what to start looking for. I was thinking it was fuel related and have so far replaced the fuel filter, but ...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 …1997 - 2003 Ford F150 - P0171 & P0174 codes on 2001 5.4 - My truck throws a P0171 code and sometimes a P0174 code when first run at outside temps under 50 deg F. Doesn't happen when first started. Usually comes on at a stop sign after about 5 miles. Once reset, it doesn't come back on unless it has sat for awhile....

The long term fuel trim diagnostic parameter is an average of several of the long term speed load learn cells which the PCM selects based on the engine speed and the engine load. 2004 - 2008 F150 - 2004 F150 5.4 codes P0172 & P0174 - I've been going through trouble shooting with no luck. Originally I was have these codes plus misfire on #1.

Sep 28, 2019 · 01-26-2007 11:01 PM. Reply. /. Modular V8 (4.6L, 5.4L) - 4.6 P0174 Code - I've looked around the forums quite a bit. I have not found anyone that has had the same issue. I have a 2000 Expedition with a 4.6, with 175,000 miles on it. What sticks out to me is, I only have the P0174 code, and everyone else seems to have that, AND the P0171 code ... And at 2000 Rpms I had a bad vibration. Hook up my scanner and I'm getting a P2196 For B1S1 biased/stuck rich. So I begin to look for the issue why it's running rich and only on 1 side. And the exhaust smelled awful. Checked my fuel pressure to start with just to verify its good, and it was.When your powertrain/engine control module receives a reading that indicates there’s too much oxygen and the ratio is incorrect, it sends an error code P0171 or P0174. …1997-2006 Expedition & Navigator - P0171 code and long term fuel trim 1 reads high - I have a 99 expedition with the 5.4L. It idles rough and the check engine light is on. When I hooked up my scanner it gave me the P0171 system 1 too lean code. While checking the run time data, I found that the long term fuel trim 1...Mar 23, 2015 ... Comments11 · F150 Runs Rough, Lean P0171 P0174 (SI Ep 6.2) · Diagnosing a Faulty Mass Air Flow Sensor: P0171 P0174 Lean Codes · FORD P0171 and...Diagnostic Software / P0171 P0174 Ford Codes. 16 posts • Page 1 of 1. AMOCO Regular Member Posts: 44 Joined: Thu Sep 08, 2011 11:08 am Truck: 1997 F-150 XL RWD Location: Colorado Springs,CO. Diagnostic Software / P0171 P0174 Ford Codes. Post by AMOCO » Thu Oct 16, 2014 6:59 am. Seems like it's running fine ,but cannot get anyone to figure out the 172 code rich bank 1 . Had trim codes recalibrated and updated engine computer . 3 times the ... 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 ... 1997 - 2003 F150 - 97 5.4 F150 codes P0171 and P0174 - Seems like I have a problem common to a lot of others. It started out with a cel and code P0171. I cleared the code and ran it for a couple of days and the cel comes on again half way home from work.1997 - 2003 Ford F150 - 2001 5.4 P0171 & P0174 Fixed - Hello, I have been a long time lurker and finally had something constructive to post. I have had lean codes P0171 & P0174 for a few years and finally did something about it. I suspected all along that the cause was the intake manifold gaskets. The thought of...In summary, a P0720 code in a Ford F150 indicates a problem with the output speed sensor circuit, which can cause drivability issues and damage to the transmission. If this code is triggered, it is important to have it diagnosed and repaired as soon as possible. P0720 is a diagnostic trouble code (DTC) that is related to the output speed sensor ...

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Maintenance Shop - P 0174, p0171, p0401 Problem solved - Just a quick posting to thank the F150 forum for being there. After experiencing the above System too Lean codes and EGR flow insufficient I read nearly every entry on solving this problem for my 2002 F150 4.2L. This truck has 252,000 miles on the odo, and still...1997 - 2003 Ford F150 - Chasing P0171 P0174 faults on 1997 F150 4.6L - [FYI: Fix was a new MAF sensor ... results are on post #17 in this thread] I replaced the fuel filter and cleaned the MAF sensor (see other thread of mine) and I am getting pending faults for those lovely codes. I took screen grabs of my phone when...2004 - 2008 Ford F150 - rough idle, p0171, 0174 - Hey, I'm new to the site, and have done an extensive search for help with my problem, but none of the results are quite the same as my problem. I have an '04 F-150 with the 5.4l and am getting codes p0171, p0174, p2195, p2197. I read out the meaning of all of them and...Ford F-150 5.4L 3v Engine: Common Causes for Lean Codes P0171 P0174 - YouTube. FordTechMakuloco. 830K subscribers. Subscribed. 4.2K. 522K views 6 years …I got p0171 and p0174 codes coming up (lean in bank 1 and 2). I've got a new fuel pump, fuel filter, fuel injector assembly line, spark plugs,a new MAF sensor and new 02 sensor, PCV valve and theres no air leak. And also the the fuel pressure is speck. I've also hooked the truck up to the computer to check the fuel trims when i spray brake ...1997-2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator DiscussionMaintenance Shop - P 0174, p0171, p0401 Problem solved - Just a quick posting to thank the F150 forum for being there. After experiencing the above System too Lean codes and EGR flow insufficient I read nearly every entry on solving this problem for my 2002 F150 4.2L. This truck has 252,000 miles on the odo, and still...The long term fuel trim diagnostic parameter is an average of several of the long term speed load learn cells which the PCM selects based on the engine speed and the engine load. 2004 - 2008 F150 - 2004 F150 5.4 codes P0172 & P0174 - I've been going through trouble shooting with no luck. Originally I was have these codes plus misfire on #1.To diagnose the P1537 Ford 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. ….

97 f150 p0171 174. by F150 30-06 » Sat May 22, 2010 12:11 am. Hi everybody ive got a 97 f150 4x4 and i keep getting the codes p0171 174 bank 1 and 2 running too lean. Heres wat ive done so far in my search. Cleaned the MAF. Replaced the pcv valve and the 90 deg boot under the firewall. Checked for vacume leaks i cant seem to find any.Re: NEED HELP code p0171, not the easy fix. by markgloverville » Thu Feb 04, 2010 12:53 am. A code P0171 may mean that one or more of the following has happened: •The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled.1 / 1. 1997 - 2003 F150 - Lean codes P0171 and P0174 SOLVED! - I finally found out what was giving me the codes and engine performance issues. I figured it had to be something simple because during cranking the engine would spin over for over 3 seconds before firing off. I decided to hook up my fuel pressure gauge, and it...Maintenance Shop - P0171 (Bank 1 lean), P0175 (Bank 2 rich) at sametime - Original problem was running rough and no power with codes P0301, P0306, P0305 & P0306. I changed out the ignition coil, and all plugs, verified wires good. Little to no change, still runs rough. I can pull a plug wire off cylinders 1 through 3...Apr 28, 2022 · This code represents a problem in the exhaust system and can be connected to the $7E8 Engine Code. The location of this problem usually stems from the fuel trim system bank. What Does P0171 Ford F150 Mean? This engine code refers to a lack of oxygen in the exhaust system. P0171 - Lean code cylinder bank 1 on right side (passenger) of a V6 or V8 with rear-wheel drive P0174 - Lean code cylinder bank 2 on left side (driver) of a transverse-mounted V6 with front-wheel drive.Since a four-cylinder has no bank 2, this is not applicable to that engine. These Ford codes are seen when the PCM detects there is too much air in the air/fuel mixture resulting in a ...If both banks are affected, the what alloro suggested is the usual culprit 90+% of the time. 1997 - 2003 F150 - 98 Ford F150 4.6 issues (P0171) - Just received that code last night, I also saw the long term fuel trims on bank 1 spike to 30 bank 2 is in the 20s. These two have been higher than they should be for a while but seem to be getting …This is a Ford Expedition 5.4 with a vacuum leak causing "System Too Lean" trouble codes P0171 and P0174. In this video I will show you how to use freeze fr...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...The most common cause of the P0171 code – and the P0170 and P0173-P0174 codes – is unmetered air entering the combustion system. Most of the time, this happens due to faulty or dirty mass ... Ford f150 p0171 code, 1987 - 1996 F150 - P0401 and P0171 Codes Suddenly - So I've got a 1996 F150 5.8L with 193,000 miles on it. When I bought it, it had the P0401 code popping up. ... Talk about your 8th and 9th generation Ford F150 trucks. P0401 and P0171 Codes Suddenly. Reply Subscribe . Thread Tools Search this Thread 11-17-2016, 07:47 PM ..., A: Code P0171 on a Ford F150 refers to a diagnostic trouble code that indicates a lean fuel mixture in the engine's cylinders. Q: What are the symptoms of code P0171 on a Ford F150? A: Some common symptoms of code P0171 on a Ford F150 include a decrease in engine performance, poor fuel economy, rough idling, and potentially even engine misfires., P0301 is a fairly common trouble code with the Ford F150. It's an OBD2 code and indicates that your truck’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your F150. ... When your F150 has P0301 and P0171 together, it’s often caused by a clogged or underperforming ..., 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 …, Mar 8, 2015 ... This video is a demonstration on how to identify and fix a common part failure in the 2003 Ford Expedition 5.4L Triton Engine that generates ..., Here is a breakdown of the oxygen sensors for the Ford F150, 5.4 engine. I will assume that most 5.4 Ford engine have the same breakdown. Please subscribe as..., FORD CODE P0171 SYSTEM TOO LEAN BANK 1. EASY FIXIf you have Ford, your engine light is on and you have code P0171 in this video we will explain what often ca..., Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. Engine / Transmission / Drivetrain. Non-EcoBoost V6 Engines - 4.2L (1997-2008), 3.7L (2011-newer) ... Codes came up P0171 and P0174. System Adaptive Fuel too lean on bank 1 and bank 2., P0171 - Lean code cylinder bank 1 on right side (passenger) of a V6 or V8 with rear-wheel drive P0174 - Lean code cylinder bank 2 on left side (driver) of a transverse-mounted V6 with front-wheel drive.Since a four-cylinder has no bank 2, this is not applicable to that engine. These Ford codes are seen when the PCM detects there is too much air in the air/fuel mixture resulting in a ..., This time I plan to do it myself. I'm going to cut open the floor in back and replace the pump from above. It looks like Rock Auto has the Motorcraft for about $300.00, though I may buy something cheaper. 1968-Present E-Series Van/Cutaway/Chassis - 2003 5.4l P0171 P0174 Solved. Repair Completed - Hello, everyone., 1987 - 1996 F150 - P0171 & p0174 - I'm troubleshooting a P0171 & P0174 code on my truck and just wanted to make sure I'm on the right track. My scan tool is pretty basic but I'm hoping I can get this solved without buying a better one (that's in the works) and without guessing. The truck has had performance issues..., 90. 13K views 2 years ago. 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 …, Jun 28, 2021 ... Tutorial para tomar en consideración cuando se presenta el código de falla P0171 en las camionetas Ford F-150. Debido a que en ocasiones ..., 01-26-2007 11:01 PM. Reply. /. Modular V8 (4.6L, 5.4L) - 4.6 P0174 Code - I've looked around the forums quite a bit. I have not found anyone that has had the same issue. I have a 2000 Expedition with a 4.6, with 175,000 miles on it. What sticks out to me is, I only have the P0174 code, and everyone else seems to have that, AND the P0171 code ..., Problem codes P0171 and P0174 on a 99 ford f150. Truck is surging while at idle and driving, replaced fuel pump, fuel tank pressure sensor, fuel filter, PCV valve, cleaned the MAF sensor, EGR valve an … read more, I got p0171 and p0174 codes coming up (lean in bank 1 and 2). I've got a new fuel pump, fuel filter, fuel injector assembly line, spark plugs,a new MAF sensor and new 02 sensor, PCV valve and theres no air leak. And also the the fuel pressure is speck. I've also hooked the truck up to the computer to check the fuel trims when i spray brake ..., 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 ..., 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-fuel ratio entering the combustion chamber is not what the engine wants. It means there is too much air or too little gas to balance the specified mixture ratio., Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. ... 97' F-150 4X4 4.6L Triton pulling P0300,P0171 & P0174 Extremely rough iddle and stalls occasionally. What should I look for? ... it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is ..., So i drove it home and pulled the code, this time its giving me p0171, p0303, p0304. did anyone ever had this experience. The P0171 is a lean reading from the o2 sensor. The 0303,0304 are cylinder 3 and 4 misfire. This could be leading to the o2 sensor reading. Coil packs look like they are in your future., Ford F-150 5.4L 3v Engine: Common Causes for Lean Codes P0171 P0174 - YouTube. FordTechMakuloco. 830K subscribers. Subscribed. 4.2K. 522K views 6 years …, 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., 2004 - 2008 F150 - Codes P0171 and p0174 - F150 Lariet 5.4 2004 ex cab 82,000 miles CEL came on read the codes P0171 and p0174 Ford store says I need 4 cat converters for 1200.00 hard to believe all 4 went bad at same time any advice did clean Mass Air Flo sensor Truck idles rough and will shut off after several..., Oct 1, 2010 · 1997 - 2003 F150 - P0175 and P0171 codes - I am getting codes P0171 and P0175 on a 2002 F-150 4.2. I have cleaned the MAF and filter, replaced the elbows on the PCV assy and checked for vacuum leaks but couldnt find anything. The truck runs a little rough at idle but doesnt seem to lack any power. It is also hard to... , Maintenance Shop - P0171 (Bank 1 lean), P0175 (Bank 2 rich) at sametime - Original problem was running rough and no power with codes P0301, P0306, P0305 & P0306. I changed out the ignition coil, and all plugs, verified wires good. Little to no change, still runs rough. I can pull a plug wire off cylinders 1 through 3..., 1997 - 2003 F150 - 2000 f-150 5.4l p1151/p1131 p0174/p0171 - Ive got a 2000 ford f-150 with the 5.4l. 185k miles ive been getting a couple codes thrown by the pcm. a year ago I had the code for the egr system come up and that has stopped coming up and now I just get p0174/p0171. sometimes it throws the p1151/p1154..., P1131 is a diagnostic trouble code that applies to vehicles manufactured by Ford, including the F150. Trouble codes that start with P1XXX were reserved for manufacturers. This code occurs when the upstream O2 sensor on bank 1 fails a diagnostic test twice in a row. P1131 Quick Facts DTC P1131 is usually caused by a, Ford F150 5.4 P0171 & P0174 Lean Codes fixed vacuum leak and runs like new! Any questions I'll be glad to respond. Also showed Fuel sys1 OL-Fault, The codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. On Ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem. 2004 FORD F150 P0171, P0174, P0301, Misfire and Lean Condition., The code P0171 Ford F150 is a diagnostic trouble code (DTC) for "System Too Lean (Bank 1)." This code is triggered when the air-fuel ratio in the engine is too low, and the oxygen sensor in Bank 1 senses too much oxygen in the exhaust. The best way to diagnose this code is to first check for any vacuum leaks, then check the fuel injectors ..., And at 2000 Rpms I had a bad vibration. Hook up my scanner and I'm getting a P2196 For B1S1 biased/stuck rich. So I begin to look for the issue why it's running rich and only on 1 side. And the exhaust smelled awful. Checked my fuel pressure to start with just to verify its good, and it was., 1997 - 2003 F150 - 2003 F150 engine code P0171 - My 'service engine soon' light just came on today. Took my truck to Auto Zone and they told my that my fuel trim bank 1 is running too lean. Told me that I either needed (1) oxygen sensor, (2) spark plugs, or (3) fuel injectors. Just wanted to get any input from this..., Jan 4, 2022 ... P0171 AND P0174 System too Lean BANK #1 BANK #2 on a 2005 Ford F 150 5 4L VIN: #5 HD 1080p ; Ford F-150 & Expedition 5.4L 3v Triton Engines Hard ...