Ford Ranger P0171 Code - Ford Ranger P0171 Code: Troubleshooting and Solutions.

Simplicity is the ultimate sophistication. At first it was accompanied by a rough idle which threw off the diagnosis a bit. Take a close look at all the vacuum lines especially the PCV …. 0 OHV Tech The Infamous P0171 and P0174 codes troubleshooting User Name. You would still get the P0171 code until LTFT dropped under +15 from driving. Make sure to check voltage and charging conditions first. Thread Tools Search this Thread. 1997 - 2003 F150 - p0171, p0174, & p0420 - 2002 f-150 5. I got the oil changed yesterday and today and when I started it this morning I got a check engine light with the code reader p0171 came up. This time I plan to do it myself. P0174 indicates Bank 2 of the engine has a lean fuel mixture. i replaced air filter new fuel filter new mass air flow no vaccuum leaks however when i changed the fule filter , i went to bleed the fuel pressure. Using a digital voltmeter, check for voltage on the brown/light green wire. So I started by cleaning out the MAF sensor, that didn't work so I've been driving it around until I had time to check for a vacuum leak. 2002 ford focus p0171 code Ford lean codes p0171, p0174 Throwing codes p0171 p0174 Codes windstar obd p0174 lean p0171 engine ford too check light trouble causes possible some p2106 silverado p1133 dodge gmc malfunction injector lean caddy civic sentra intermittent camshaft titan juke symptoms P0171 p0174 codes ranger …. There are two major kinds of starting problems with a Ford Ranger: it won’t crank, or it won’t start. When your Ranger has P0304 and P0171 together, it's often caused by a clogged or underperforming fuel. Last edited by El Smitro; 11-01-2004 at 10:54 AM. The sensor on or right after the exhaust manifold is typically the sensor that reports the lean condition. is r6s down The maximum towing capacity of the Ford Ranger models from 2007 through 2009 is 2,460 pounds. IOW more intake air than the MAF itself has actually measured. First shop they changed Intake manifold, fuel cap, coil, plugs, air filter, thermostat. Car Jerking/Hesitating/Wanting to Stall under acceleration. I have the P0171 and P0174, lean on both banks. too much air or not enough fuel). Welcome to Ford Ranger Forum Thread Tools: Search this Thread to the exhaust manifold is broken,thus letting oxygen enter and triggering the oxygen sensor on bank one and giving me P0171 CODE,i went to the junk yard and grab me some bolts and i found 3 3. If it's giving incorrect readings, it can cause the engine to run lean. Rich Mixture = Too much fuel, not enough air. 1983 - 2012 Ranger & B-Series - P0171 code - I've got a 2000 Ford Ranger 2. When your Ranger has P0302 and P0171 together, it’s often caused by a clogged or underperforming fuel injector. 0 v6 with two codes P0171 & P0174 Lean condtion bank 1 &2 Have tryed everything short of - Answered by a verified Ford Mechanic 2000 ford ranger 3. Welcome to Ford Ranger Forum Page 1 of 2: 1: 2 > Thread Tools: Search this Thread #1 01-17-2010, 03:22 PM cliftonfts Ford Rager 1999 codes P0171/174. ISSUE: This article is intended to aid in diagnosing DTC's P0171, P0174, P1130, P1131, P1150, P1151, P2195, or P2197 (system lean or lack of HEGO switches) when a vacuum leak is present. So I had the codes p0171 and p0174 fuel too lean in bank 1 and 2, I figured out that it was the lower intake gaskets and replaced them. About 2-3 hours into the trip my "service. 0 V8, M5R2 5 Speed, 4" Suspension Lift, 3" Body Lift, 33" BFG's, Bilstein 5100's, Comp Cams XE258HR-12,. 3L 180k Miles: I just bought this truck a few weeks ago and I'm tired of throwing parts at this issue. The only specification for these codes is that the idle is out of factory. Light came back on in about 30-40 miles. Welcome to Ford Ranger Forum Thread Tools: Search this Thread #1 12-02-2012, 12:18 PM nickp001 Ranger has been throwing a P0171 (system too lean) and I've spent the last several days troubleshooting it. Last winter they appeared, after many searchs for the cause I discovered I had a partially plugged fuel filter. Ran good, but 2001 ford ranger 4. It indicates that your Ford Raptor is running lean on the bank one side. P1000: OBD-II Monitor Testing Incomplete: P1001: KOER Test Cannot Be Completed: P1039: Vehicle Speed Signal Missing or Improper: P1051:. When your Ranger has P0303 and P0171 together, it’s often caused by a clogged or underperforming fuel injector. Torque it down till it breaks off, then back it off 1/4 turn. 3L has had a CEL with code P0171 for several weeks now, and I can't figure it out. Ford p0171 & p0174 lean codesDiagnosing trouble codes p0171 and p0174 New mustang owner -- p0171 & p0174 engine codesP0171 p0174 codes ranger throwing ford 0l forums ohv reply sohc v6 tech tube. Unlike a lot of the OBDII codes, this code has to do directly with engine combustion. 1996 ford ranger CODE P0171 B1 engine light is on and code P0171 b1 came up when i did a diagnosis test on it. Aug 7, 2010 · Getting a code of P0171. Long story short, I pulled the codes with my Autel unit and found the P0171, P0174 codes indicating lean condition on banks 1 and 2. and also clean your MAF (mass air flow sensor)located on the air box. 2003 Ford Ranger xl 2wd 5speed standard 2. 0 sohc with codes p0171 and p0174P0171 – fuel trim (ft) system too lean, bank 1 (ford) – troublecodes. the o2 sensors are working and doing there job and reporting the condition. Feb 1, 2010 · p0171 is a lean on bank one, most often caused by a vacuum leak somewhere. 1 Bank 1 is the bank that has cylinder 1 which would be the right (passenger in USA) side. Quote: Originally Posted by DangerRanger37. I am getting codes P0171 and P0175 on a 2002 F-150 4. The problem with the fuel injectors in your Ford Ranger can result in the code P0171. Runs smooth at both idle and high rpm. With most vehicles, the most common cause for the P0174 or P0171 code to show is a vacuum leak. taurus mag sleeve I tried cleaning the MAF (even bought the special CRC MAF cleaner) and this did not clear the code. Hello all, was wondering if anyone here ever had a lean code (P0171) issue. cirsten w instagram P0171 & p0174!!!! Ever since I got a new ecm my car has been coming up with so many issue. This lead me to replacing the upper plenum gaskets. Aug 18, 2023 · How to fix a Ford P0171 engine code: System Too Lean (Bank 1) A lean condition exists if the engine is getting more air than fuel in the cylinders. used dirt bikes for sale under $1000 just for kicks i cleared the P0171 & P0174 codes today and unplugged the mass air flow sensor. sti 1911 frame I've checked a bunch of Youtube videos and threads here. 06 Cadillac STS V8 car has codes P0174 and P0420. Pretty common issue on these trucks. ; Oxygen Sensor- The P0175 code is thrown when the B2S1 O2 sensor does not register the right amount of oxygen. 1983-2011 Ford Ranger Tech 2019-Present Ford Ranger Tech 1983-2011 Ford Ranger 4x4 Builders I'll also post the freeze frame data that was associated with two different p0171 codes. I cant find any vacuum leaks changed O2 sensors, pcv valve, vacuum lines checked and couldn't find the leak need help please. 1A Auto: Repair Tips & Secrets Only Mechanics Know . The code P2195 in most cases on your 4. For one thing, the odds of both upstream sensors going out at the same time are pretty slim. I have replaced MAF,O2, IAC, and EGR. Trouble codes that start with P1XXX were reserved for manufacturers. Engine Bank 2 is the opposite side of the engine. lennar floor plans texas There has to be excess fuel for some reason and is being detected by the Ox sensor. 2L V6 - P0171 & P0174 lean bank 1&2 codes - Hey everyone. The P0171 code was present before I changed the injector, and is still there after that brief period of really fine engine response and idle. The dealer mentioned a $250 diagnostics fee. it had 9 engine codes on it ranging from egr to o2 sensor, missfire and etc. These instructions will work on 98 to 2008 Ford Rangers with 3. I second the vacuum leak theory. Dec 5, 2019 · 1983 - 2012 Ranger & B-Series - Need help diagnosing P0171 in 2. Feb 8, 2013 · I have a 99 ford ranger 2. The problem started on the off ramp for the freeway and the engine just started shaking at idle. 2003 FORD RANGER EDGE SHOWS 6 CODES P0171 P0174 P2197 P2195 P0300 P0316 ANYWAY TO TELL WHAT MIGHT BE THE MOST LIKELY PROBLEM. Scanned a P0171 with a pending P0171 & a pending P0720 (Output Shaft Speed Sensor Circuit). It is also one of the most common codes. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. P0174- Fuel Trim System Lean → …. I have put a scan tool to it and cannot read my fuel trims (they come up -100% on …. That is where my knowledge and experience stops. Help! P0301, P0302, and P0171 codes. The P0171 code indicates that the oxygen (O2) sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is too lean to be corrected. A common trouble code with the Ford Ranger is P0172. Oct 9, 2018 · One of the most common trouble codes with the Ford Ranger is P0174. This is lower compared to the 2006 Ford Ranger, which had a maximum towing capacity of. Liking the Ford Ranger Forum : Join Date: Feb 2011. When these codes are set together, there are a few different things that can cause this issue. Take a look around and see if you can find a vacuum leak. Jay, you were right about the crap quality hose that Ford uses, but the hose that failed wasn't the PCV hose. P0171 code definition System Too Lean (Bank 1) What the P0171 code means The P0171 OBD-II code means that, on the first bank of the engine, the fuel system is running weak or a vacuum leak exists near this side of the engine. • DTC P0174 Fuel Trim System Lean Bank 2. On inline engines, this code is not available, since there is only one. Clean the MAF sensor and see if that gets rid of the p0171 code, 2003 ford ranger xl single cab, 5 speed 2. 0 ohv, 5 speed, sony xploid 52 4 way watt radio, 2 pair of pioneer 240 watt speakers, Cobra 29 LX LCD CB radio pushing 100 watts, k&n …. Thread starter Avyn Nix; Start date Jul 16, 2023; Prev. The test fails when the adaptive fuel tables reach a rich calibrated limit. If it comes back higher than that, the P0113 trouble code gets set in the computer. P2197 says "Lack of O2 sensor - Bank 2, Sensor 1". P0301 is a fairly common trouble code with the Ford Ranger. pcmExplorer ford code idle rough p0190 2005 engine check light. Replaced all plug wires now down to Number 2 …. i've replaced the fuel pump, fuel filter, fuel injectors, fuel pressure regulator, the maf, pcv valve, egr, dpfe sensor, as well as both 02 sensors and checked for vacuum leaks with a vacuum tester and everything shows up fine. When will things turn around for Ford stock? There's no sign of improvement anytime in the future, and Wall Street is getting restless. The P0455 I understand can be a fuel cap issue, however I don't think it is that as I am extremely ocd about putting the gas cap on …. brett cooper religon Liking the Ford Ranger Forum P0171 code - 2008 Ranger 4. Welcome to Ford Ranger Forum Thread Tools: Search this Thread #1 08-15-2015, 02:42 PM gcextreme. I am getting a P0171 code from my OBD II port. If the fuel filter is ok, a fuel pressure reading. Let's take a look at what your test results mean: CASE 1: The O2S11 and O2S21 values shot up and stayed at 0. P0174 - bank 2 (driver side) too lean. The fault code P228C indicates a problem with the fuel pressure regulator control circuit. It had the OBD codes checked and they came up with P0133, P1131, and P0171. The hose was severely cracked at both ends. Ford P0171 OBD-II Trouble Code Definition: P0171 Fuel Trim System Lean Bank 1 P0171 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0171 System Too Lean What does the code mean? 2012 Ford Ranger 2012 Ford Mustang Cobra Jet Twin-Turbo Concept 2012 Ford Mustang Boss 302 Laguna Seca 2012 Ford Mustang Boss 302 2012 …. The truck will rev up and down from 500-1000 RPM when Im rolling. newly renovated homes for rent near me Today the check engine light came on but the truck seemed to be running just fine. Got to work, tightened cap, disconnected battery to reset code. I connected my OBD reader and it reads P0171 - system to lean bank 1. Does anyone know exactly which sensor? I heard bank 1 sensor 2 but I'm not sure exactly where that is either. Ford is joining the likes of Zipcar and other car-sharing services with its new peer-to-peer car-sharing service for drivers. Go check all your hoses for crack/dry rot or leaks/holes. 1 P1132 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank No. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. Look for either a tear or in the hose. Other causes have been reported to be everything from a bad 02 sensor to bad spark plugs. The following TSB(s) may apply to your 1998 Ford Ranger. It will ocassionally idle rough and also have strong odor from the exhaust. Feb 5, 1998 · ok im just trying to save some money by not taking it to the shop. 3L I4 Duratec DOHC, 5R44E 5-speed auto, RWD, 7. cursed emojis to copy and paste I replaced it and had no further. My truck has not been running in over 6 months due to just no needing it. 0 P0171 and P0174 - Alright, this is gonna be kind of long but I'm at a loss. Thread starter redstangs9308gt; Start date Feb 18, 2010; 1; 2; Next. does jvke have tattoos The issues ive been having from the beginning of buying was P0171 & P0174 codes. You've got an air leak on 1 side. I cleaned the MAF with electrical cleaner, and replaced the fuel filter. DTC P2195 is a general code, which means that it has the same meaning for any make, model, or year. In this video I have a Ford Ranger with lean codes on both banks, freeze frame indicates that the lean condition is happening at idle. P0171- System Too Lean (Bank 1), and. In this video I go over another common cause for lean codes on the 4. Temp good, oil pressure good, amps good. It could be one or more of the following problems: Defective ECT sensor. Joined Oct 12, 2009 Messages 3 Reaction score my dads 2000 ford ranger 5speed with about 90k has high idle its at 1500. lean bank 1 and 2 codes almost always mean there is a vacuum leak somewhere and depending on the severity of the leak it can cause rough idles and poor performance. 3L I-4 - My ignorance is showing. ; Oxygen Sensor- The P0172 code is thrown when the B1S1 O2 sensor does not register the right amount of oxygen. Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. bbq gifs It is most typically caused by a bad O2 sensor, …. 6 liter engine, no complaints from the customer other than the check engine light is on. My fuel trims are maxed for long term and just about maxed for short term at idle, they do not change when driving. (none) Truck still performs great with the exception of - Answered by a verified Ford Mechanic I have a 1998 ford ranger 3. 3l 2009 mazda motor; bebyb New Member. 1997 - 2003 F150 - Service Engine Soon: P0171 - Hi all. Joined Aug 6, 2020 Messages 34 Reaction score 1 Points 8 Location ga. I don't know if perhaps the old one wasn't reading crap or this one is too advanced. The truck is in great shape other then this issue. The O2 sensor can correct a fuel mixture of +-15%. No change to truck performance or engine sounds etc. I've did some searching and learned that one thing to try might be to clean the mass air flow sensor. 4L it is on the passenger side, so that is where the 02 sensor should be. 2002 Nissan Altima; Nissan Altima Car and Truck 2002 ford ranger 2. Vacuum ford ranger p0171 2003 edge 4x4 p0174 leak egr valve check dpfe leaks codes which engine source problemThe never ending p0171 code. See specifications for this classic airplane. Read the codes and got a P0171 set as a trouble code and a P0174 as …. I have 2011 ford ranger with p0171 lean condition bank1. hca hr answers bconnected When the P0171 code sets, the oxygen sensors are detecting too little oxygen in the exhaust (running "lean") and the control module is adding more fuel than normal to sustain the proper air/fuel mixture. I've hade this rager for 6 years and I have received this codes alot. It acts like it is trying its hardest to stay running while idling. In my lack of time I replaced the front "up stream" sensors on the right and left. P0171----- system too lean bank#1 Po174----- system too lean bank#2 For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. Ford Factory Service Bulletin OBDII Code P0174 2004 FORD F150 P0171, P0174, P0301, Misfire, and Lean. I understand the common problem is an O2 sensor. Well i can say check your mass air flow for any dirt in it and the EGR for any leaks. Ford ranger p0171 obdii trouble code diagnosisHow to fix obd code p0171 on a ford ranger Ford p0171 bank p0174 0l v6 where troubleshooting part codes2002 ford f150 5. Fortunately, there are plenty of local dealerships that carry the popular pickup truck. Faulty Positive Crankcase Ventilation (PCV) Faulty Mass Air Flow (MAF) sensor. Had the oxygen sensors checked again and none of them were bad. Other factors that may influence the cost include. P0302 in the Ford Ranger is a common OBD II trouble code. 0 and 256,000 miles and right now it is running lean in both banks, P0171 and P0174. It was just idling erratically, lack of power especially going up hill , when you turn a/c on it idle a little weird. How do you fix a code p0171 on a ford f150 1998. When this code appears, it indicates that the oxygen sensor in the engine's bank 1 is not performing optimally. 200 ford expedition diagnostic code P0171. 3l p0171; ranger-p0171 It may be the maf sensor causing the code. 13wmaz dublin ga It has new gaskets, new PCV, new PCV hose, new EVAP hose, new …. Check these links for possible solutions OBD-II Trouble Code: P0171 System Too Lean (Bank 1) , OBD-II Trouble Code: P0302 Cylinder 2 Two Misfire Detected. So MAF sensor is common to both, air tube from MAF to intake, upper intake is common to both. answered Aug 26, 2018 by Reynaldo (13. 0 sohc engine A code P0171 may mean that one or more of the following has happened: The MAF (Mass Air Flow) Sensor is dirty or faulty. scaned again still reads lean. Upper and lower intake manifold gaskets. UPDATED: Check Engline Light- Codes P2195 and P2197-Fixed. The Infamous P0171 and P0174 codes troubleshooting. Advertisement The 1957-1958 Ford Ranc. Check engine light is on with a P0171 code. I am getting trouble code P0171 & P0174 or P0172 & P0175 can't remember. Let's see what the charts look like. I have cleaned the MAF and filter, replaced the elbows on the PCV assy and checked for vacuum leaks but couldnt find anything. 0L Flex Fuel Engine and 190,000 miles. I have a 2000 Expedition with a 4. 1983 - 2012 Ranger & B-Series All Ford Ranger and Mazda B-Series models P0171 Code Help. I started last winter with P0171 and P0174 only when very cold air temp. Replaced Mass Air Flow Sensor; EGR Valve and Solenoid; and O2 sensor before cat. 0 ohv, 5 speed, sony xploid 52 4 way watt radio, 2 pair of pioneer 240 watt speakers, Cobra 29 LX LCD CB radio pushing 100 watts, k&n air. Clearing airbag codes: Clem: General Ford Ranger Discussion: 0: 10-24-2009 05. P0420 is the most common OBDII code and is virtually never a breakdown risk. 0 litre engine doesn't have those, but all the books say my engine should. The P0171 is a lean reading from the o2 sensor. However, this symptom could also mean a p0022 ford f150. youtube street fights 2021 Code P0131 indicates a malfunction in the oxygen sensor bank 1 sensor 1. If they appear together, it reduces the list of. See also Unlocking the Vibrant Essence: Toyota Paint Code 3T3 Revealed. 0 v6 2 gen I believe, lean codes bank 1 and 2 I believe they were p0171 p0172, I have replaced upper and lower intake mani gaskets, checked for vacuum leaks by spraying carb cleaner on all the hoses and ext. It means that the ECM has determined that the idle speed is above the manufacturer's specified range, potentially leading to. The light comes on after driving from a cold start and driving two to three miles as the engine warms up, the …. stp oil filter catalog Serious Explorations is a Ford Explorer and Ranger Based vehicle community. P0171 AND P0174 ON A 2001 FORD RANGER. I just need a little help with this codes. HEGO sensors, MAF sensors, and PCM replacements are not an effective repair when a vacuum leak is causing the above DTC's. 8l) - P0171, System too lean, bank 2 - Hey folks, my truck is having a problem. 1 KB, 14 views) There are a lot of different solutions to the P0171 code. If it comes back again I'd look at the intake gaskets. Now $1300 in repairs and still same problem. From my memory the p0135 code is the preheater for the precat O2 sensor. Ranger Forum Sign Up! Join RangerForum. Step 2 – Check the operation of the DPFE with the engine off, key in the run position. Feb 13, 2011 · These may be your causes. 1997 - 2003 F150 - Code P0172 - So my truck is reading a code at P0172 which means bank one is too rich. P0171 and P0174 DTC codes P0171 and P0174 DTC codes. It runs rough at idle or when I let off the accelerator and fine. What could cause this thanks Maddy. Learning to use the forums : Join Date: Sep 2009. =====Claim your FREE engine code eraser 👉 https://free. free puppies in tri cities asked Nov 29, 2017 by anonymous. I'am Working on a 1996 ranger 3. I have p0171 and p0174 codes, I have replaced the upstream o2 sensors, fuel filler neck, mass air flow sensor, ect temp sensor and I still have the check engine light come on! I am running out of ideas. 0 XLT 4X4 issues I've taken care of more of the issues I had with this older truck , however I keep getting a code P0171 & P0174. it will eventually start running bad and have an irratic idle. 1997 - 2003 F150 - P0175 and P0171 codes - I am getting codes P0171 and P0175 on a 2002 F-150 4. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). rpmdiag : Relearn procedure: Disconnect both battery cables for 20 minutes and touch the 2 cable ends together for 10 seconds. I will write down the most common fixes from the top of the …. can pee smell like weed 2024+ Ranger; 2019 - 2023 Ranger; 2020+ Explorer; 2011 to 2019 Explorer; Ford Truck Enthusiasts Forums; Performance, Engines & Troubleshooting; Modular V8 (4. I then went to the parts store to find one and they didn't have one. 2024+ Ranger; 2019 - 2023 Ranger; 2020+ Explorer; 2011 to 2019 Explorer; 1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 …. Car Quest replaced my intake manifold. 0 OHV Tech: 7: 06-24-2015 06:32 AM: P0171, P0174 - engine too lean: kenwhoo: 3. When I first scanned the OBD2 there was two codes P0171 and P0174 codes. cyl #3 misfire code after the coilpack change & a P0171 code, System Too Lean Cyl Bank #1, to go along with it, maybe a misbehaving fuel injector should also be on your suspect list. The engine’s PCM stores the freeze frame of its parameters at that time. hello, i have used an obd II scanner on my 2002 ford f150 and deleted two codes P0171 and p0174. A firing order and cylinder location diagram may be needed to see which side of the engine is. 2001 Ford Escort has OBD ll code P0171,changed O2 sensors,fixes 2 small vaccume leaks,replaced fuel filter, still get check engine light same code!!!. Comments39 ; Check Engine Light? System Too Lean - Code P0171 or P0174 on Your Car or Truck. This could be leading to the o2 sensor reading. Related Ford Ranger Pick-up truck Ford Cars and Motor Vehicles Ford Motor Company forward back. May 6, 2019 · Can anybody recommend a solution to this stinking code P0171 code - Ford Ranger Forum Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > Engine Tech Forum > 6-Cylinder Tech > 4. - pcm adjusts LTFT and STFT again. No rough idle, cranks fine, holds mph and still has plenty. Replaced Egr But Check Engine Returned After 2 Days Or About 15 Miles. Take a test drive in the Ford Expedition Platinum model and read our review of this powerful SUV. May 22, 2017 · Welcome to TRS. Founded in 1996, our goal is to support our members with the information …. P0171 - bank 1 (passenger side) too lean. I haven't been active in awhile, so hopefully forgiveness (and assistance) will be given. #28 08-18-2012, 08:22 PM The Infamous P0171 and P0174 codes troubleshooting: Lee_T413: 4. 0L p0171; p0174; ford; ranger; 2 Answers +1 vote. Most of the time, this happens due to faulty or dirty mass. I had been trying to track down and correct problems associated with Codes P0171 & P0174. Welcome to Ford Ranger Forum Page 1 of 2: 1: 2 > Thread Tools: Search this Thread #1 01-30-2017, 08:48 PM P0171 - P0174 Code Help: simplynewt: General Tech: 36: 03-25-2015 12:18 PM: 98 4. If it is malfunctioning, it can cause a false P0171 code. The thing that gets me is the engine runs fine. Use the FORD technique the next time you meet someone to av. I did a quick scan while still driving along and found a P0171 code (engine unable to adjust for a too lean condition). I will write down the most common fixes from the top of the list and go down. 09, I have tried to do most of the maintenance on our vehicles and home. 0L - Check Engine Light is on - Nashville, Tennessee Brandon showed up ahead of schedule, was very. Heres some info from a Ford CD for a 98 Expo H41 DTCs P0172, P0171, P0174 AND P0175: FUEL SYSTEM AT THE CORRECTED FUEL TRIM Diagnostic Trouble Codes (DTCs) P0171 bank 1 (Cylinder 1) and DTC P0174 bank 2 indicate the fuel/air ratio is too lean. This means that there is either too much air or insufficient fuel getting into the engine on the first bank of cylinders. Quizás hay una falla en el sistema de encendido de ignición. explore clarion police and fire calls Check engine light on, p0171 & p0174 codes on my truckFord 4l lean codes p0171 engine Ford p0174 lean codes condition p0171P0171 and p0174 …. I now can’t figure out my problem and am hoping for some insight. budds gun shop PO171- System too lean (Bank1) Most likely a failed oxygen sensor on the passenger side, if you never changed the front or upstream sensors at 100,000. The 0171 & 0174 did not come on. So far I have change the spark plug, air filter, fuel filter, MAF sensor, and the O2 sensor.