Ford f150 p0171 code

P0171 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 P0171.

P0171 Ford Mustang Causes. The P0171 code is thrown when something has caused there to be too much air or not enough fuel. With that in mind, here are the most common causes: ... Ford F150 P0171: Causes, Diagnosis, + How to Fix. Jason on Mazda 6 P0320: Meaning, Causes, & Diagnosis.Jul 20, 2022 · To diagnose the P0171 2008 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. Ford f150 trouble codesFord f150 po171 po174 Ford p0171 p0174 code solution problem forums replyFord 2001 expedition p0171 p0174 diagram throttle hose wiring ram dodge engine 2500 code body lean diagrams ecm too system. Ford f150 po171 po174. Check Details. Po171-po174.This article will help you to diagnose diagnostic trouble codes P0171 (System Too Lean Bank 1) and/or P0174 (System Too Lean Bank 2). ... 1995 Ford F150-F350 PCM Pin Out Chart (4.9L California Only) 1994-1995 Ford F150-F350 PCM Pin Out Chart (4.9L Only) 1992-1993 F150-F350 Fuel Pump Circuit Tests (Ford 4.9L, 5.0L, 5.8L) ...Chances are you'll find it early on if thorough. 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 ...If you’re in the market for a Ford F150, you’re in luck. This popular truck is known for its durability, versatility, and impressive performance. Whether you need a powerful workho...2004 - 2008 Ford F150 - 2006 4.6 p0171 and p0174 - Hey guys on my 2006 4.6 4x4 140k I'm getting a p0171 and p0174 on and off on start up. Most days they are just pending codes (no MIL) but the other day I started her up (she was already warm) and the MIL came on for both codes. I cleared them, drove 2 hours home, and...

The Ford F150 is one of the most popular and powerful trucks on the market. It has been a staple of American roads for decades, and its reputation for reliability and performance i...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 worse.Ford F-150 / F-Series Generations. 1997 - 2003 Ford F-150. If you shop at Amazon.com (for anything), use this link to help support FordF150.net! Looking for recent topics? P0171 lean code again. 6 posts • Page 1 of 1. SRT92 Regular Member Posts: 28 Joined: Sat Aug 22, 2015 8:28 pm Truck: 2003 FORD F150 STX. P0171 lean code again.Ford F-150 / F-Series Generations. ... P0171 & P0174 Codes. 9 posts • Page 1 of 1. wa6pjg New Member Posts: 2 Joined: Sun Dec 13, 2009 2:18 am Truck: 1996 F-150 4.9L EB edition. P0171 & P0174 Codes. Post by wa6pjg » Sun Dec 13, 2009 2:24 am. I have a 96 F-150 2wd with a 4.9 in it. I have been getting these codes for some time and I have done ...1997 - 2003 F150 - P0174 code, but no vacuum leak? - On my 99 F150 4.2 v6 5 speed man. 112000 mi. i am getting the p0174 code, bank 2 lean. I have seen alot bout this problem with the left bank or right runnin lean, i have checked for vacuum leaks and tested with vacuum gage. i also compared vacuum to another truck...I just replace the PCV valve in my 2003 F150 4.2l. I unplugged the battery for a few minutes and then re-attached it. Everything worked fine for a couple of weeks then the "maintance" light came on. Codes P0171 and P0174 are again the problem. I replaced not only the valve, but also the hose that attaches it to the valve cover (over $65 for both).A lean code on one side is an exhaust leak. I have P0174 right now. Drivers side pipe is pulling away from the exhaust manifold as the bolts have broken off just enough to let that happen. Changing good sensors (ones that show P0171 and P0174 codes does no good. Platinumkanikas.1997 F150 XL 4.6L (6 code engine) P0171 - Running Lean P0303 - Misfire in cylinder # 3 I read through tons of forums, not just F150forum.com, to determine how to fix ...

Come along as we look into why this 2004 Ford F-150 is setting a P0174 Bank 2 lean.These are the Tools and Parts Needed for this repair:Latest Ford Mass Air ...The code is used to diagnose engine issues, such as misfires, emissions, and other problems. The code is stored in the F-150's computer, and can be accessed with a code reader or diagnostic scanner. What Is Code P0171 Ford F150? Code P0171 is a generic OBD-II code that stands for "System Too Lean (Bank 1)."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.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.

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Starting Issues With Codes P0171/P0174. 12 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. Starting Issues With Codes P0171/P0174. Post by AMOCO » Wed May 06, 2015 10:01 am. ... 2003 Ford F-150" ...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...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.Labor: 1.0. 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.Oct 10, 2020 ... FORD CODE P0171 SYSTEM TOO LEAN BANK 1. EASY FIX · Comments41.

1997 - 2003 Ford F-150. Looking for recent topics? Codes P0171 & P0174. 5 posts • Page 1 of 1. LAFan42 New Member Posts: 1 Joined: Fri Jun 04, 2010 6:59 pm Truck: 1998 F-150 2WD 5.4 Liter. Codes P0171 & P0174. Post by LAFan42 » Fri Jun 04, 2010 7:11 pm. Engine Performance problemThese codes can indicate various problems, such as issues with the engine, emissions, fuel system, ignition, and more. Some common check engine light codes for Ford F150 include P0171 (System Too Lean), P0401 (Exhaust Gas Recirculation Flow Insufficient Detected), P0420 (Catalyst System Efficiency Below Threshold), and P0300 (Random/Multiple ...1997 - 2003 F150 - P0171 & P0174 on 4.2L V6 - Trouble code P0171 & P0174 on a 2003 F-150 with 4.2L V6. I have cleaned the MAF, changed the fuel filter, looked for vacuum leaks, checked for vacuum leaks with the MAF cleaner (flammable), checked every thread on this forum, had the check engine light reset several times....Just bought a used 2003 XLT V6 with 87,000 miles. "Service engine soon" light came on with the code P0171 - Bank one lean. Printout from Autozone. Definition. Fuel trim bank one condition. Explanation. The powertrain control module uses the oxygen sensor to calculate the air/fuel ratio of the engine. The computer has recognized a rich or lean ...Some 2001-2003 F-150, 2004 F-150 Heritage and 2001-2003 E-150/250 vehicles equipped with a 4.2L engine may exhibit the malfunction indicator lamp (MIL) on with diagnostic trouble codes (DTCs) P1131 and/or P1151 (system too lean bank 1 or 2). This condition may be due to leaking isolator bolts/port gaskets in the upper-to-lower intake manifold ...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...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...Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. ... Looking for recent topics? 2002 F150 4.6L P0171 code. 2 posts • Page 1 of 1. Xentrae150 New Member Posts: 1 Joined: Sun Jul 30, 2017 8:42 pm Truck: 2002 F-150 Extended Cab. 2002 F150 4.6L P0171 code. Post by …

If this does not work, you’ll likely need to replace the mass air flow sensor. #P0171 Ford F150 – p0171 ford fix. Typically, the P0171 Ford F150 code means that the air-fuel ratio is not correct, and there is an imbalance between air and fuel. This could mean there is not enough fuel, or there could be too much air in the engine.

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 …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...Ford F-150 / F-Series Generations. 1997 - 2003 Ford F-150. Looking for recent topics? F150 Codes P0171 / P0174 Information. 58 posts 1; 2; 3; Next; 3FOX Hardcore Ford Truck Fanatic Posts: 3868 Joined: Mon Oct 22, 2012 2:53 am Truck: 02 F150 SCREW. F150 Codes P0171 / P0174 Information.Fuel Injectors. P0171 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 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...by johnnyg768 » Wed Aug 18, 2010 4:05 am. So I have an 03 F150 Supercrew with a 4.6L. It has been throwing P0175 (bank 2 rich) and P0171 (bank 1 lean). The dealer is blaming my K&N intake, which was on and running fine for 2 years previous to this issue. Below are average readouts from an approximately 10 minute run.Diagnosing and repairing the P0401 Code on an 08 Ford F150 with the 4.6l V8 engine.Don't forget to connect with me on Facebook:https://www.facebook.com/Salem...1987 - 1996 F150 & Larger F-Series Trucks - 1996 F150 4.9l I6 - lean condition code p0171 p0174 w/ freeze frame dats - OK guys, got some lean condition codes in my 96 f150, 4.9l, dual tanks. Codes are p0171 and p0174. Truck stumbles a little off idle sometimes, but otherwise runs strong, no pinging. Plugged in my...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%...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...

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P0300 is a generic OBDII code that can occur with the Ford F150. This code indicates that your truck's engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). ... P0171 is the most common code to see with a vacuum ...Jan 1, 2016 ... Comments73 ; Every engine part changed, still has P0171 P0174 codes Pt2. Schrodingers Box · 49K views ; Ford F-150 & Expedition 5.4L 3v Triton ...The towing capacity of the Ford F150 varies by model, but the 2015 model ranges from 5,100 to 12,200 lbs. There are differences between how much an automatic and a manual transmiss...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...Re: 2002 ford F-150 Code P0171. by Chris's FX4 » Wed Nov 13, 2013 10:52 pm. Try cleaning the MAF first and check the PCV valve itself. Follow the PCV line from the valve on the passenger side valve cover to the back of the intake. There's an elbow back behind the intake up under the firewall, its hard to see unless you're practically sitting ...To diagnose the P0171 2008 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.Oxygen Sensor – The P0175 code is thrown when the B2S1 O2 sensor does not register the right amount of oxygen in the exhaust. The computer will still adjust the air/fuel mixture to compensate. A bad O2 sensor will show a lean mixture more often, though. Mass Air Flow Sensor – Your F150’s mass air flow sensor calculates the volume …Inspect your COP boots and wire if you change your plugs, use dielectric grease in the boots and anti-seize on the plug thread. 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. Reply Like. # 3.Received 1 Like on 1 Post. p0174, p0316, p0302, 02 f-150. Sisters truck. 100k+ miles. Number 3 Nasty plug. 3more bad. Replaced all plugs and reset codes. Prior codes for 3 and 2 misfire. Replaced all plug wires now down to Number 2 misfire and boy she stumbles. ….

You are here: Ford F150 Home » F150 Forum. Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. ... code P0171. 6 posts • Page 1 of 1. txford09 Regular Member Posts: 92 Joined: Sun Mar 09, 2008 2:42 pm Location: Nederland, TX. code P0171.1987 - 1996 F150 - 1996 F150 4.9L System too Lean (P0171 & P0174) - Hey guys. I filled up my tank the other day, and noticed that the check engine light came on. I checked out the codes and saw that it read P0171 and P0174, which is system is too lean for Bank 1 and Bank 2. I had this code show up before maybe like...Fix a Ford F150 P2195 P2197 trouble code. If you own a Ford F150 and have either of these trouble codes Ford F150 P2195 or Ford F150 P2197, read this post. Ford has issued a service bulletin #11-3-27 to address an issue where trouble codes P2195 or P2197 may show up when the vehicle is scanned. The TSB applies to 2009-2010 F150 vehicles with ...P0171 - Fuel Trim System Lean → Bank 1: P0171 indicates that the side of the engine with the first cylinder (Bank 1) is running lean. P0174- Fuel Trim System Lean → Bank 2: P0174 indicates that the side of the engine with the first cylinder (Bank 2) is running lean. On inline engines, this code is not available, since there is only one ...Nov 2, 2008 · 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. 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 ... As to Codes PO171 and PO174... these are BOTH indicative of a lean condition. 171 indicates a lean condition on bank one (driver's side cylinders) and 174 indicates a lean condition on bank two (passenger side cylinders).1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.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... Ford f150 p0171 code, 420 is a catalytic converter deficiency code. 420 Baby! 420 appears to indicate deficiency in more than converters. Just kidding! Ford Inline Six, 200, 250, 4.9L / 300 - 96 f-150 codes p0171, p0174, p0420 - I recently bought a 96 f-150xl 4.9l inline 6 with about 183k miles. I drove it for a few days and now i have a check engine light with ..., 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 ..., 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., P0175 fix. So for the last few months i have had the p0175 bank 2 Rich code. Ive searched and searched fforums and have had it hooked up to machines a few times and noone could find out what was wrong. I noticed on the forums noone would post back and update what the fix was. Soo after replacing alot of stuff i replaced all the bank 2 fuel ..., 1997 - 2003 F150 - Help! I have a code p1131 and p0171 - 2003 4.6 f150. I have a code p1131 and p0171. The catalytic converter is glowing red. Also acts like it has a miss when idling and at low rpm. Higher the rpm, it smooths out.....what should I look for to fix?, 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., 06 f150 p0171. 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 hose and the hose that comes off fuel pressure regulator sensor., 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., 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..., DTC codes P0171 & P0174. I've had DTC P0171 & P0174 (lean in bank 1 and lean in bank 2) for a few weeks now (check engine light cued me on it). Autozone scanned it for me. It's on a 2003 F250 SD 4x4 5.4L. My first step was to clean the MAFS. Light came back on in about 30-40 miles. I then replaced the MAFS. 30-40 miles and the light came back on., P2195 is a general OBD2 code that indicates that the signal coming from your Ford F150's 1'st O2 sensor on Bank 1 Sensor 1 is stuck lean. DTC P2195 is a general code, which means that it has the same meaning for any make, model, or year. It is most typically caused by a bad O2 sensor, but there can A LOT of issues that can cause this code., The "Check Engine" light was turned on yesterday on my '98 Expedition EB. I got two codes at the same time: 1. P0171- System Too Lean (Bank 1), and. 2. P0174- System Too Lean (Bank 2). I know either one of these codes can mean something is wrong with air intake, fuel system, or O2 sensor., 1998 Ford F150 Triton V8 with P0171 and P0174 lean codes that has had every part thrown at it and even the repair shop can't figure it out...But maybe a DIY ..., by CollinsTech » Wed Dec 07, 2005 10:41 pm. If your P0171 and P0174 has gone away---then the intake is not leaking. The bubbling you see is the spray hitting the hot engine. Also, you sometimes hear what sounds like a vacuum leak, but it isn't. If the P0401 is the only code you are getting, then it is not the intake., The code is used to diagnose engine issues, such as misfires, emissions, and other problems. The code is stored in the F-150's computer, and can be accessed with a code reader or diagnostic scanner. What Is Code P0171 Ford F150? Code P0171 is a generic OBD-II code that stands for "System Too Lean (Bank 1).", Code P0171 indicates Bank 1 of the engine has a lean fuel mixture. P0174 indicates Bank 2 of the engine has a lean fuel mixture. Engine Bank 1 is the same side of the engine as Engine Cylinder 1. Engine Bank 2 is the opposite side of the engine., 1997 - 2003 Ford F-150. Looking for recent topics? 2002 f150 4.2 engine codes p0171 and p0175. 2 posts • Page 1 of 1. Troybritten New Member Posts: 3 ... The codes are a p0171 and a p0175 codes The mechanics say they have never seen that before But the saw the codes and are scratching there heads on this. Top. 3FOX Hardcore Ford Truck Fanatic, Learn 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., Ford F-150 / F-Series Generations. 1997 - 2003 Ford F-150. If you shop at Amazon.com (for anything), use this link to help support FordF150.net! ... Cleared that fault code. P0171/0174 came back. I have doused everything in carb cleaner and had ZERO throttle/idle surging., 1987 - 1996 F150 - 1996 F150 4.9L System too Lean (P0171 & P0174) - Hey guys. I filled up my tank the other day, and noticed that the check engine light came on. I checked out the codes and saw that it read P0171 and P0174, which is system is too lean for Bank 1 and Bank 2., 2004 - 2008 Ford F150 - HELP!!!! 04 FX4 5.4L 3v Codes, P0171, P0303, P0316 - Ok, 5.4L 3v owners and or mechanics I am at a complete loss!! I have a 04 FX4 and recently did the plugs (zero broke!!) and all 8 COP (summit racing brand) truck has 138k and and 2 days ago it started sputtering in overdrive on the highway..., 2004 - 2008 Ford F150 - P0171, p0303, p0353 - These are the codes I pulled after I got home from work today. So, I went to the dealership and bought a new COP ($87.42), and replaced it. ... 2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck. P0171, p0303, p0353. Reply Subscribe . Thread Tools Search this …, How to Fix. What does this mean? Possible Causes. NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes. Intake air leaks. Faulty front heated oxygen sensor. Ignition misfiring. Faulty fuel injectors. Exhaust gas leaks. Incorrect fuel pressure. Lack of fuel., Sep 10, 2019 ... 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., 2004 - 2008 F150 - 2004 F150 5.4L SuperCrew running rough code P0171 Engine Light stays on - Hey guys, I just started to have this problem yesterday. Engine light comes on and stays on. Engine shakes and truck won't go over 50 MPH. Autozone code checker came up with P0171. Truck has about 95K miles and I had the spark..., I have a lean code on my 2005 f150 ford. replaced fuel filter, air filter, MAF sensor, and the bank 1 sensor 1 oxygen - Answered by a verified Ford Mechanic. ... hello, i have used an obd II scanner on my 2002 ford f150 and deleted two codes P0171 and p0174., 1997-2006 Expedition & Navigator - P0171 only on 03 5.4 - I'm getting only code P0171 on my 2003 5.4 Expy, any ideas? I thought if it was a vacuum leak I would get P0171 & P0174. The truck is still running and idling fine and fuel economy seems unchanged, I actually reset the code and it was off for about a week - now..., P2197 is a general DTC code that indicates that the signal coming from your Ford F150's first O2 sensor on the bank two side of the engine is stuck giving off a lean signal. The voltage reading from a normal oxygen sensor should look something like a heartbeat, whereas with P2197 the voltage looks like a low voltage flatline)., F150 Codes P0171 / P0174 Information. by 3FOX » Tue Aug 05, 2014 5:11 am. On all trucks with well over 50,000 miles, sooner or later these codes will appear. In 99% of the cases it is an air leak into the intake of unaccounted for air., The methods in this video can be used when diagnosing evap systems. Keep in mind vehicles will vary between manufacturers.In this video we are working on a ..., Check engine light P0171 bank 1 mix too lean. The truck began idling rough.Replace the hose in the back of the air intake manifold. When you take it apart an..., The 1940s Classic Ford Cars Channel covers popular antique Fords from the decade. Take a look under the hood of 1940s classic Ford cars. Advertisement The 1940s Classic Ford Cars C..., 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.