Bmw p0171 p0174 fuel filter

0i). 13 Nov 2018 on caused by OBDII codes P0171 and P0174 (Fuel System Too Lean), Clogged fuel filter; Weak fuel pump; Clogged fuel injectors cause of the P0171 and P0174 lean mixture fault in the BMW X3 is a faulty DISA valve. 2000 Eddie Bauer 5. P0171 and P0174 Lean codes General E46 Forum Fuel filter Vacuum line to fuel filter Lower hose temp switch O-ring - BMW #13621743299. stopped up fuel filter, bad fuel pressure regulator, and failing fuel > meter to the wiring near the fuel pump and see if it's suffering a > voltage drop under load due to perhaps burned relay contacts. Lean Code’s P0171 and P0174 – Common Causes store they recommended a fuel filter. Chasing these codes P0171 bank 1 and P0174 bank 2 Lean , lean can mean several things. This article is one in a series that have been released in conjunction with Wayne's new book, 101 Performance Projects for Your BMW 3 Series. P0171 A bank combustion too lean: Air intake leak between MAFS and throttle Fuel filter, system blockage Fuel injector blockage Fuel pressure regulator failure (low fuel pressure) Low fuel pump output HO2S harness wiring condition fault Exhaust leak (before catalyst) ECM receiving incorrect signal from one or more of the following components: ECTS, MAFS, IATS, TPS P0174 B bank combustion too Ford Taurus Forum Ford Taurus & Mercury Sable Forums 2000-2007 Ford Taurus & Mercury Sable (4th Generation) If you shop at Amazon. A G. Trying to be a mechanic, I read the code and started googling. The book contains 272 pages of full color projects detailing everything from performance mods to timing the camshafts. bmw dealer repair software with electronic parts catalog . 2002 Ford Ranger code p1537. Does anyone knows exactly what the problems are? I cleaned the MAF (Mass Airflow Sensor) with electronic cleaner and clear the codes. A plugged Fuel Filter or poorly functioning Fuel Pump can set the P0171 code. . If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. Typically the code will be triggered by a lean condition in the engine. Then I replaced the purge vent solenoid and P0174 went away for a bit. Technical Description: The engine is running lean on bank 1, meaning the air to fuel ratio is biased towards air. 5/29/2018 · The only problem with your post is that the fix for the CEL/MIL depends on the code that accompanies the light. OE fuel filter 4. BMW 330i 325i E46 Using Fuel Trims Tác giả: 50sKidLượt xem: 518K2004 BMW: p0171 which are both lean banks. Codes are P0171 and P0174. How to locate a vacuum leak without a smoke. While it was out I connected a hose to the Hooked my scanner up and it showed codes P0171 and P0171. If there are no intake leaks, the next step is to replace the air filter …Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. DIRTY MAF SENSOR One of the most common causes of Ford P0171 and P0174 lean codes is a dirty mass airflow (MAF) sensor. Replace the fuel filter often! I've been replacing mine yearly, at a cost of about $12 for a Motorcraft fuel filter. P0171 A bank combustion too lean: Air intake leak between MAFS and throttle Fuel filter, system blockage Fuel injector blockage Fuel pressure regulator failure (low fuel pressure) Low fuel pump output HO2S harness wiring condition fault Exhaust leak (before catalyst) ECM receiving incorrect signal from one or more of the following components: ECTS, MAFS, IATS, TPS P0174 B bank combustion too Justanswer. The boot is not cracked or leaking. See more manual for bmw" "Rough Idle, Vibrating & Shaking Idle Problem BMW 5 Series 3 Series E90 E39 528I 328I M5 M3 How to diagnose BMW E46 E39 E53 Vacuum leaks Lean codes P0171 P0174 for the M54 M52tu. P0171 & P0174 after fuel pump replacement I was out of town and a local guy that does repairs on the side replaced it with one from Advance Auto. If you are troubleshooting DTC P0171 or P0174, go to step 2. OBDII Codes P0171 and P0174: Diagnosis Clogged fuel filter; many report that a common cause of the P0171 and P0174 lean mixture fault in the BMW X3 is a BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174 The P0171 and P0174 codes will plague every owner of an E46 or E39 BMW at some point in their lives. Dec 13, 2012 at 10 it is not the fuel filter. justanswer. com. change fuel filter …How diagnose obd ii fault codes p0171 p0174 leaking, We had a 2006 ford 2003 ford f150 codes p0171 p0174: computer problem, Computer problem 2003. P0174 Ford Description With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. 0l engine( according to some paper work from the previous owner it has around 45-60k miles on it). P0300 and random P0171 and P0174 Discussion in 'Maintenance' started by DaJester, Feb 18, 2014. . 4L XLT and about a week and a half ago I got the p0171 and p0174 codes so I cleaned the MAF and throttle body I looked. It comes and goes at different times and I can't seem to see any sort of trend. My car started fine, just occasionally stalled. re: p0171, p0174, p0300 May 29 2018, 9:36pm It you can post a set of live data from your scanner both at hot idle and at 55 mph which includes fuel trims, MAF g/s and manifold pressure at a minimum. com/bmw/6no9w-bmw-bmw-z4-2004-bmw-z4-car2005 bmw z4 dtc code p0171 & p0174, fuel system too lean, cleaned maf, replaced air filter (installed new K&N) cleared codes and the above listed codes returned. No running issues noted along with light. spark plaugs o2 sensors, fuel pump and a fuel filter. Clean your MAF, change your fuel filter, MAKE SURE YOU Re: P0171 and P0174 Fuel Trim System Lean/service Stabilitrak/traction control off For future reference, here is the free download link for the factory service manual. check fuel injector they are all right , fuel pump is good, There is no vacuum leak at the engine, new fuel filter, the PCV hose is good , My Long term fuel trim is at 25 % My short fuel trim is at ~0. Ford MAF sensor. Silverado 1500. If there are no intake leaks, the next step is to replace the air filter …Oxygen sensors are used to monitor the oxygen content of the engine exhaust. com/auto-repair/P0171-and-P0174-OBDII-Code1/20/2013 · OBDII Codes P0171 and P0174: Diagnosis. Engine code p0171 and p0174 question? I had change my upper and lower intake gasket plus the o ring brand new. ask. The missing o-ring! 2001 Cummins 8. 16 Tháng Tám 20189 Tháng Tám 201513 Tháng Tám 2012pulled the codes which were P0171 and P0174. How to determine the cause of a lean condition on a Ford 5. I have figured out the issue. Truck idles air filter and i cleaned the P0171, Fuel System Lean (Bank 1), BMW Engine code p0171 and p0174 question? I had change my upper and lower intake gasket plus the o ring brand new. Ive run bg44k and seafoam thru gas tank, and tried filling up with P0171 and P0174 mean "fuel mixture too lean" on cylinder bank 1 and bank 2 respectively. Truck idles air filter and i cleaned the P0171, Fuel System Lean (Bank 1), BMW HOW TO FIX P0171 & P0174 Codes + COMMON E46 VACUUM LEAKS. It is NOT the MAF! its NOT the fuel pump, spark plugs, vacuum leak, ect. PCV, fuel filter. com or Other music stores. Other things to look at after ruling out the above would be dirty fuel filter and fuel pump- easiest way to check would be to measure fuel pressure. I cleaned the MAF. If the problem persist the front oxygen (O2) sensor may need to be replaced. But I keep getting codes P0174, P0171, and P0327. System Too Lean (P0171, P0174) - Vacuum Leak Quick Test - Ford 5. Intermittent SES light - P0171 P0174 - no vac leaks Fuel I am thinking that maybe my fuel pump and/or filter is on its way out. BMW 330i 325i E46 Using Fuel Trims To Diagnose Engine Problems P0171 P0174 Bmw E53 secondary air diagnosis Installing A BMW E60 AC Schitzer Wing And The New E39 Wheels Are Here !!! Hey all, Been trying to track down a cause for P0171 and P0174 codes. For car and truck owners who have a "check engine" light on caused by OBDII codes P0171 and P0174 (Fuel System Too Lean), here are some tips for diagnosis and troubleshooting. I know I need to check the MAF. I have been trying to trouble shoot the Fuel System Too Lean code P0171/P0174 using the information provided here. 4/6/2010 · Hi Everyone, About 4 weeks ago, my service engine soon light came on (2003 X5 3. My truck is giving codes P0171 & P0174. When a vehicle has the fault code P0171 and or P0174, it means that computer can no longer automatically adjust the mixture between air and fuel. bmw p0171 p0174 fuel filter After buying a fuel filter and going home my husband was about to install it BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174. Shortly after I picked the Jeep up from him it started throwing the P0171 & P0174 codes but ran ok. Check for a dirty fuel filter and proper 1997 Ford Ranger Engine Code P0171 Check engine light came on solid. The p0171 and p0174 only gets set after an extended period of driving and only at an idle. Learn what does P0174 Ford means? P0174 Ford Fuel Injection System Too Lean Bank 2OBD-II Trouble Code Chart / P0171 - OBD-II Trouble Code Fuel System Too Lean (Bank 1)Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. When the DTC P0171 or P0174 is recorded, the actual air–fuel ratio is on the LEAN side. 1999 ford windstar p0141, p0171, p0174 codes? Check for fuel pump pressure, dirty fuel filter, and possible injectors dirty, but since it doesn't FF63008 Stage II Fuel Filter Featuring NanoNet™ For I I have read that there is a P0171, P0174 (Fuel system lean, Bank 1 Bmw Oil Filter Wrench I got a diagnostic at autozone and got the code p0171 system too lean bank 1. If the problem is not enough fuel, the underling cause may be a weak fuel pump, restricted fuel filter, leaky fuel pressure regulator or dirty fuel injectors. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. What P0171 really means: Over time when the engine wears, parts break, or if measuring sensors become faulty, the computer can make corrections by lengthening the on time for the fuel injectors to richen up the mixture. Many of the things you talk about are for the remedy of a lean condition, and there are two codes that come up for that, P0171 and P0174. Ford F-150 P0171 P0174 Trouble Codes. Ford P0171 & P0174 Lean Codes A Ford P0171 is a LEAN code for cylinder bank 1, and P0174 is a LEAN code for cylinder bank 2. 2008 I have replaced the MAF sensor, air filter, knock sensor, fuel pump, coil, tps, fuel filter, distributor cap and rotor. Possible Causes and Repair Information for P0174 Ford code. the air filter, MAF, I P0171 Toyota Corolla The first step in So this engine code article applies to Why Does a P0171/P0174 Code and Running "Too Lean" EGR flow, causing it to under-report EGR flow. It came back on after couple days later. The lean condition can be either too much air OR not enough fuel. I had the Check engine light come on about a month ago with a couple of issues, i have a scanner which threw up an O2 sensor heater element fault along with P0171 and P0174 and there was also a misfire detected fault on one of the cylinders. So like the little says I have the p0171 p0174 and p0300 on a Silverado 2500 6. com, Amazon. I arrived to a 2000 Toyota Tundra 3. The computer hears (accurately) from the Oxygen Sensor that the Fuel Mixture is too lean so the computer keeps increasing the amount of fuel being delivered into the combustion chambers. Make repairs as required. I have 171 & 174 on my 2004 E46 BMW 330ci. How To Change Fuel Filter - BMW E46 DIY. before all of this i replaced my valve cover gasket and all these … Ford Taurus Forum Ford Taurus & Mercury Sable Forums 2000-2007 Ford Taurus & Mercury Sable (4th Generation) If you shop at Amazon. and today i checked for vacuum leaks no sign of any leaks. Got a P00BC, P0171, and P0174 code. I have done alot of research on these codes, and have found that what this means is: The O2 sensors are reading a lean condition and are adjusting the fuel mixture richer and richer until it exceeds a predetermined value, then sets the CEL. 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. BMW E46: Fuel Filter and Pressure Regulator Low fuel pressure - codes p0171 and p0174 present was created by kensponder I ttok it in and they shop told me it was upper and lower intake gasket, still didnt fix problem. P0171 Bmw Description With the Air/Fuel Mixture Ratio Self-Learning Control, the actual P0174 - OBD-II Trouble Code Fuel System Too Lean (Bank 2) Additional Causes of Code P0174. MAF on diag. When a vehicle has the fault code P0171 and or P0174, it means that the automatic mixture adjustment that is made by the computer is at its maximum. Additional Causes of Code P0171. aside from throwing parts at it, i think The important thing to remember, is that you can use your scan tool to check the Fuel Trim values with your scan tool to verify the lean condition (that is setting the P0171 and/or P0174 codes) is actually present. This means there is too much air and/or not enough fuel. Check engine p0171 & p0174 Discussion in '1994-2004 V6 Mustang Tech' started by albert55, Jun 18, 2008. The idle is very steady but take-off is very bad and speeds beyond 60 are hesitating. One with the most typical causes of Ford P0171 and P0174 lean codes is actually a dirty mass airflow (MAF) sensor. I think I'm ready to throw in the towel on this one. P0171 Fuel System Too Lean (Bank 1) P0174 Fuel System Too Lean (Bank 2) This guide is for you if your check engine light is on and you’ve used an OBDII scanner tool to read the fault codes and they returned P0171 and P0174. After buying a fuel filter and going home my husband was about to install it Hi aim going pretty much crazy with my 2002 BMW e39 525i with 78k miles i have been getting these codes p0171 , p0174 system too lean bank 1 bank 2. I had the codes read and found P0171, P0174 indicating both banks were lean. This video explores vacuum leaks and fuel system delivery problems in depth by using an OBD2 scanner to look at fuel trims and determine what kind of problem an If the codes were P0171 and P0174, the O2 sensors are fine, they are doing their job and REPORTING a lean condition. Nov 13, 2018 on caused by OBDII codes P0171 and P0174 (Fuel System Too Lean), Clogged fuel filter; Weak fuel pump; Clogged fuel injectors cause of the P0171 and P0174 lean mixture fault in the BMW X3 is a faulty DISA valve. Ford Taurus; ·; Volkswagen Jetta; ·; BMW 325i; ·; Ford Explorer; ·; Ford Escort. P0174 Bmw Description With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. I have replaced or serviced or inspected the following: intake and head gaskets, vacuum lines, fuel system, maf sensor, air and fuel filters, o2 and fuel pressure sensors. I checked for any vacuum leaks with carb cleaner. I also removed the air filter box and am using a K&N type filter w/heat shield. If there are no intake leaks, the next step is to replace the air filter …Fuel pump new, and sparkplugs, new coil and new filter gas. The "filter" for what it is is in the tank. P0171. Clear all codes after repairs are complete, and operate the vehicle normally before rescanning the system to see if any codes return. i can clear them and they will So I've been plagued with a P0171 code (lean bank 1). com/p0171_bmw. Q car year: 2002 car model: 530i I’ve got a 2002 BMW 530i with 2 fault codes p1085 fuel control mixture lean (bank 2 sensor 1) and p0174 system too lean bank 2. The filter is built in into the tank and not easily replaceable (but not impossible). P0174 Bmw Description With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174 - YouTube How to change a Fuel Filter (GM, Honda, Toyota Style) ChrisFix. System Too Lean (Bank 1) Check for a dirty fuel filter and proper fuel pressure; 2 days ago I had P0171 and P0174 and the truck's idle was off with hesitation on acceleration response. com Blogs Car Info Our Show Mechanics Files Gear symbol with exclamation mark inside on BMW 325xi P0171 and P0174 Codes. That information is used by the engine control module to fine tune the amount of fuel supplied to the fuel injectors. I pulled the codes and they are P0171 & P0174. P0171, P0174, P0300. 7 parts air to 1 part fuel) in the fuel mixture. The computer hears (accurately) from the Oxygen Sensor that the Fuel Mixture is too lean so the computer keeps increasing the amount of fuel being delivered into the 1999 Chevy Silverado Codes P0327, P0171, and P0174 Okay guys I'm back with the same problem. In most cases, you'll also see the engine idle rough and/or misfire upon vehicle acceleration. autocodes. New k&n filters 3. Hi Everyone, About 4 weeks ago, my service engine soon light came on (2003 X5 3. Codes P0171 & P0174. Have a 97 Ford Ranger (4. gif Clearing DTC's and learned fuel trims Ford Explorer 4. A plugged Fuel Filter or poorly functioning Fuel Pump can set the P0174 code. By Reinier and that the box holding the air filter is undamaged and properly sealed. Low fuel pressure - codes p0171 and p0174 present was created by kensponder I ttok it in and they shop told me it was upper and lower intake gasket, still didnt fix problem. Đánh giá: 3Tác giả: JohnnyvestP0171 Bmw - Mixture Control System Too Leanhttps://www. codes; p0170; p0171; p0174;In addition on Ford models, a well known issue is that P0171 and P0174 lean codes can occur if the EGR differential pressure sensor goes bad. Nothing changed. P0171 Toyota an improper condition in the control of the Fuel System. The P0171 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. asked Jul 5, 2015 by Randy Dickinson. This code can also be accompanied by a P0171, which will identify bank 2 as lean. 5 posts • Page 1 of 1. There are several good DIY on the net for this. The site for Ford truck owners, by Ford truck owners Low Fuel Pressure and Codes P0171/P0174. After changing the filter, MAF, new Gas Gap and adding fuel injector cleaner to the gas, I started to look for a vacuum leak. 0i). 0L V6 SOHC P0171 P0174 Lean BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174 - YouTube. A dirty MAF sensor can set a lean code. bmw p0171 p0174 fuel filterAug 13, 2012 BMW E46 330ci P0171 P0174 Bank 1 & 2 running lean solution the fuel looked like coming out of the filtered side of the fuel filter/regulator. My V8 4runner is throwing P0171 & P0174 codes and I'm trying to track down the problem. tool appears to be functi … Fuel pump/filter? So I've had this intermittent SES light for a while now and it's always the same codes (P0171 and P0174). If you have a V6 or V8 engine you can also get a P0174 code which refers to Bank 2. This means too much air or too little fuel. change the fuel filter? Clean the MAF In addition on Ford models, a well known issue is that P0171 and P0174 lean codes can occur if the EGR differential pressure sensor goes bad. Change MAF sensor and no change, is problem most likely bad O2 sensors and if so which ones, thanks Change MAF sensor and no change, is problem most likely bad O2 sensors and if so which ones, thanks So I've been plagued with a P0171 code (lean bank 1). DIRTY MAF SENSOR. US. fuel pump and the fuel filter/regulator. BMW 330i 325i E46 Using Fuel Trims I just hooked it up to a code reader and it came up with P0171 system too lean bank 1 and p0174 system too lean bank 1. I haven't had much luck with cleaning these. 2 l M54 engine. I need help please P0171, P0174, after replacing air/fuel ratio sensor and air filter. Drives: BMW 2011 328i I have been fighting P0171 P0174 lean codes for months. I checked the fuel filter. i had to put it in neutral and pulled over. Codes 2882, 2883, P0171, P0174 - BMW. 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). P0171 Bmw Description With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. System Too Lean (Bank 1) What does that mean? Basically this means that an oxygen sensor in bank 1 has detected a lean condition (too much oxygen in the exhaust). P0171,p0174 lean codes. Today I replaced the fuel filter and sprayed down the MAF Sensor with CRC MAF cleaner. zpsf179989d. Then I replaced the MAF and P0171 went away for a bit. i can clear them and they will Comments: 2001 BMW 330i with 98,000 miles, getting codes p1083, p1085, p0171, and p0174. tool appears to be functi …P0171 - OBD-II Trouble Code Fuel System Too Lean (Bank 1) to 4-cylinder engines (Bank 1) as they generally have only one bank. Replaced MAF, PCV and elbow, fuel filter, cleaned throttle body and replace upper plenum gasket. P0171 code definition. Discussion in 'E39 Might be time for a fuel filter (includes fuel pressure regulator Hello, I have a 2010 BMW X3. BMW; Lamborghini; 2000 Chevy Silverado Rough Idle idle that diminishes as the engine warms up possible dtcs p0171 p0174 or p0300 2000 rcsb gmc sierra slow build '12 Sonic throwing code P0171 (2012, gasket, fuel, exhaust) If they opened the air filter box or anything like that, there is also the possibility that . Trying to everything I can before taking it to a shop. Hello there and welcome to the BMW Car Club of America. Feb 18, 2014 at 8:49 I would change your fuel filter too. It says 2008-2010 Enclave, but your 2007 Saturn will be included in many of the files. HOW TO FIX P0171 & P0174 Codes + COMMON E46 VACUUM www. It has always had the P0171/P0174 codes so I cleaned the MAFS when I 1st bought it but these codes continue to return. 5 . > > I also disco'd the fuel filter and checked it yesterday. After trying everything everything that people have suggested. Additional Causes of Code P0171/P0174. If the fuel filter is Yesterday I replaced the MAS with a new one and that did nothing and I also replaced the fuel filter but no luck either. This can be complicated by ignition misfire, the o2 sensor reports this as lean. I am planning to replace the fuel filter any idea or comment Your car has either a P0171, P0174 lean fault code or both stored in the computer, these codes are based on Oxygen Sensor (O-2) readings. Help BMW 330ci e46 p0171 p0174 issues! Here's where I am at 3 possible reasons for the P0171 P0174 codes. Some things to consider are the driver side fender is dented, could use new bumper brackets, paint job would not be a bad idea, and has a service engine with the following codes (p0171, p0070, p0174), which I might fix soon or sell it with it on. Fuel filter plugged; Dirty. See More. This could be caused by a number of reasons, such as low fuel pressure, plugged fuel filter, worn fuel pump, vacuum leaks, exhaust leaks, etc. 0) that throws p0171 & p0174 codes. Any possible thoughts? I will be trying to change the gas cap, was told that might solve it. 2005 BMW X3 with p0171 & p0174. I have replaced mass air flow, fuel pressure regulator, and about a year ago new fuel pump and filter. Oxygen sensors are used to monitor the oxygen content of the engine exhaust. Might be time for a fuel filter (includes fuel pressure regulator) or fuel pump. A P0171 check engine light code is set when the computer has reached a rich calibration limit and can not add enough fuel to maintain the correct mixture. I need help please P0171 p0174 bmw 325i 2004. P0174 - Fuel Trim System Lean Bank 2. BMW E46: Fuel Filter and Pressure Regulator The P0171 and P0174 code on a Chevy Silverado will often be thrown if the fuel injection system is not operating properly. Code P0171 applies to Bank 1 and P0174 applies to Bank 2. Low fuel pressure. Driving a car with the code P0171 can cause more damage to your vehicle over time, as when the engine runs lean, the combustion temperature is much higher. I replaced the fuel filter. My SES light is on and I pulled the codes at i got P0171 and P0174 which says the car is running too lean bank 1 and 2. +. All times are GMT -4. Also had the tranny pan and torque converter dumped and new filter as fluid looked to be a pale pink with slight yellow cast. So my truck has thrown P0171, P0174 and P0449. The MIL then comes on. - checked for Am I on right path to maybe try to replace the fuel filter? - Can I test for fuel 13 Mar 2017 Code P0171 is caused by the fuel system running too lean (Bank 1). engine-codes. -fuel pressure -gas leakage in exhaust system HOW TO FIX P0171 & P0174 Codes + COMMON E46 VACUUM LEAKS. Yesterday i was driving and the car just stopped, like the car wasnt getting any fuel. Your car has either a P0171, P0174 lean fault code or both stored in the computer, these codes are based on Oxygen Sensor (O-2) readings. 2004 Ford Expedition 5. Asked by Abbynrml Feb 15, 2015 at 06:57 PM about the 1997 Ford Ranger I have p0171 and p0174 codes, I have replaced the upstream o2 sensors, fuel air flow sensor, ect temp sensor and I still have the check engine light come on! I got a diagnostic at autozone and got the code p0171 system too lean bank 1. 3 ISC Fuel Filter change part 2-yzkw720STeU. Where should I start for diagnostics? I'm going to replace my fuel filter (not sure if it's the 1 or 2 inlet one, I've seen both on 05 330xi's?). OE Mass air flow 2. O2 sensor Plugs 2 Coils MAF Fuel injectors Fuel Filter Fuel pressure regulator Finally took it to a shop and had them live data read it. Bad fuel pump. When this happens, it sends enough fuel to keep the engine running, but not enough for the PCM to effectively control the Air/Fuel Mixture. •Check for a dirty fuel filter and proper fuel pressure. to/2lb9iYL How to diagnose the common P0171 and P0174 lean codes on a  P0171 - OBD-II Trouble Code Fuel System Too Lean (Bank 1) - RepairPal repairpal. Are there any v8 owners who have had leaky exhaust manifolds cause the p0171 & p0174 lean codes? leak or a weak fuel pump. the air filter, MAF, I BMW 330i 325i E46 Using Fuel Trims To Diagnose Engine Problems P0171 P0174 Bmw E53 secondary air diagnosis Installing A BMW E60 AC Schitzer Wing And The New E39 Wheels Are Here !!! I have new code p0171 and p0174 With conic filter. What Does OBD-II Fault Code P0171 Mean? Combustion engines function best when they maintain a specific ratio of air to fuel (about 14. 0, in the morning i drove about 2 miles. Would a dirty or clogged fuel filter effect gas milage? What are the symptoms of dirty oil filter and does it make sense to change the engine oil? Is my cracked air filter housing the problem for check engine codes P0171 and P0174? bmw bimmer disa valve p0174 530i 525i 540i 528i m54 m54b30 m54b25 bank 2 too lean o2 sensor maf air filter grime vacuum leak brittle hose spark plug throttle body idle control valve elbow intake boot upper lower p0171 safety and emissions owner bank 1 catalytic converter torque horsepower registration safety and emissions state annual m5 upper P0300 - random misfire , P0171 & P0174 lean code's . The car currently has 110,000 miles and never done the spark plugs or fuel filter change. Check your engine lights on. Would a dirty or clogged fuel filter effect gas milage? What are the symptoms of dirty oil filter and does it make sense to change the engine oil? Is my cracked air filter housing the problem for check engine codes P0171 and P0174? This answer is applicable for many BMWs in addition to the one listed below. When this happens, this will result in a lean condition that will set the DTCs P0171 and P0174. After 6 years or …For car and truck owners who have a "check engine" light on caused by OBDII codes P0171 and P0174 (Fuel System Too Lean), here are some tips for diagnosis and troubleshooting. 10-02-2012, 02:19 PM 6/14/2011 · After confirming you do not have a vacuum leak, check your fuel pressure. 10/11/2012 · P0171 and P0174 Lean codes General E46 Forum. What and how to fix the problem? 2 Answers. The engine is running lean on bank 2, meaning the air to fuel ratio is biased This code can also be accompanied by a P0171, which will identify bank 2 the computer cannot account for, or a clogged fuel filter will restrict the supply of fuel. Isuzi rodeo 2001 codes p0171? SAVE CANCEL. but also too much air to lean out the ratio of air/fuel. Thought maybe it was due to me leaving the car running while pumping gas, or not getting cap back on tight enough. No change. Finaltouchone1. code p0174 is defined as a obd ii p0174 fuel system too lean (bank 2) chevrolet · dodge · bmw · acura . Any advise you guys could give me beyond that would be greatly appreciated. BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174. gif Clearing DTC's and learned fuel trims From a very quick look it seems to suggest "low fuel" condition or lean condition. after a little while I started the car but wasnt 12/19/2012 · Should the dilemma is just not adequate fuel, the underling lead to might be a weak fuel pump, restricted fuel filter, leaky fuel strain regulator or dirty fuel injectors. com BMW: 2001 bmw 325i i am getting codes p1083 p1085 p0171 p0174 2001 bmw 325i i am getting codes p1083 p1085 p0171 p0174 what i have done so far i have replaced the ccv and put a new fuel filter on. I have a 2003 BMW 325Ci. You can confirm the engine is running lean by looking at Short Term Fuel Trim (STFT) and Long Term Fuel Trim (LTFT). P0171 and P0174. Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. P0171 Bmw Description With the Air/Fuel Mixture Ratio Self-Learning Control, the 12/1/2011 · Fuel pump/filter? So I've had this intermittent SES light for a while now and it's always the same codes (P0171 and P0174). Got MAF sensor changed, but mechanic said when he install the new MAF, he got the same code, so he install my old MAF back. 6/5/2015 · BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174 The P0171 and P0174 codes will plague every owner of an E46 or E39 BMW at some point in their lives. What I replaced was, MAF sensor, Fuel Filter (wix 3737), and Fuel Throttle body (DBW) Ford Taurus Forum Ford Taurus & Mercury Sable Forums 2000-2007 Ford Taurus & Mercury Sable (4th Generation) If you shop at Amazon. I keep getting a service engine light. Error Code P0174 on BMW 330Ci 2001 - After seven trips to BMW OBD II P0174 Fuel System Too Lean (Bank 2) performance 4-cylinder and straight 6-cylinder engines (such as those in BMW and Lexus) split A plugged Fuel Filter or poorly functioning Fuel Pump can set the P0171 code. This article is one in a series that have been released in conjunction with Wayne's new book, 101 Performance Projects for Your BMW 3 Series. 5/4/2010 · - - P0171, P0174 resolved (https: A Code P0171/p0174 lean fuel condition can be caused by: Yeah, called BMW and they want $695 CAD for a new one. you think it could be clogged fuel filter? Unlikely. replace if necessary\nCheck for a dirty fuel filter and proper fuel When a vehicle has the fault code P0171 and or P0174, it means that the automatic mixture adjustment that is made by the computer is at its maximum. Fuel System: Leaking or faulty fuel pressure regulator Plugged or dirty fuel filter or lines Fuel pump weak or defective check valve Injectors leaking or faulty Low fuel pressure or running out of fuel Leaking EVAP system components Faulty FRP (Fuel Rail Pressure Sensor) Ford P0171 & P0174 Lean Codes restricted fuel filter, leaky fuel pressure regulator or dirty fuel injectors. com/youtube?q=bmw+p0171+p0174+fuel+filter&v=QiqUAF0zxCk Aug 16, 2018 Welcome to ShopLifeTV! In this video I go over the most common causes for the p0171 and p0174 codes. P0171 and P0174 mean "fuel mixture too lean" on cylinder bank 1 and bank 2 respectively. and that's making me suspicious, next on the list is fuel filter and fuel pressure, I've tested the intake as best I can, I basically doused Ford F150 Forum. johnnyvest. 4KP0171 Bmw - Mixture Control System Too Lean - Engine-Codes. and they were P0171 and P0174 which are the lean condition for banks 1 and 2. p0300, p0171,p0174. 06 Chevy intermittent p0171 and p0174 codes × Merry Christmas and Happy Oh fuel filter to my looking and knowledge the model year has just the sock inside the Justanswer. I did get both I have been trying to trouble shoot the Fuel System Too Lean code P0171/P0174 using the information provided here. Ford Explorer 4. When I drive the car I notice a few symptoms pertaining to the codes. Free Download Songs Inpa/how To Fix P0171 P0174 Codes Common E46 Vacuum Leaks MP3 at Zawaringo just for review only. They had in hand fuel fouled spark plugs and no explanation as to why. It comes and goes at different times and …1/12/2011 · 2005 bmw z4 dtc code p0171 & p0174, fuel system too lean, cleaned maf, replaced air filter (installed new K&N) cleared codes and the above listed codes …5/5OBDII Codes P0171 and P0174: Diagnosis | AxleAddicthttps://axleaddict. $500 to swap out. htmlP0171 Bmw Mixture Control System Too Lean If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. I cleaned MAF and throttle body. If the vehicle runs out of fuel, the air–fuel ratio is LEAN and the DTC P0171 is recorded. My Ford Freestyle . net! p0174 p0171 p0401 Other things to look at after ruling out the above would be dirty fuel filter and fuel pump- easiest way to check would be to measure fuel pressure. comhttps://www. Repair Difficulty Level: the next step is to replace the air filter and clean the air flow meter. Computer codes = P0174 Bank 2 P0171 Bank 1. Most commonly a vacuum leak, with the PCV elbow being the prime suspect. 0 Gasoline 2 codes P0171-Fuel trim Bank one condition and P0174- Fuel trim Bank two condition. tool appears to be functioning. P0174 – Relates Check Engine Light Code P0171 System Too Lean - Bank 1. They are lean mixtures on bank one and 2. User Name: Remember Me? Password : E46Fanatics > E46 Fuel filter Vacuum line to fuel filter Vacuum line from vacuum pump check valve to valve at back of manifold BMW #13621743299. Fuel pump new, and sparkplugs, new coil and new filter gas. htmlP0171 BMW - Mixture Control System Too Lean. 0L SOHC Rough Idle P0171 P0174 Lean Codes In this video I go. 4. I noticed it the other day after I filled up with gas. See vid. My car started giving me a CEL for a too lean condition. Here is what I have done since Aug. If the codes were P0171 and P0174, the O2 sensors are fine, they are doing their job and REPORTING a lean condition. lean codes P0171 and P0174. Sometimes caused by a restricted fuel filter. I first replaced my gas cap and air filter. Shortly after installing my DC Sport headers and CAI. I've found good reason to change the following parts which have not solved my problem: 1. My Jeep CEL came on, on the trail yesterday. Before last trip replaced spark plugs and fuel filter/regulator (all factory BMW parts) and lamp came on twice. p0171 and p0174 Discussion in 'Maintenance' started by Belo, Dec 13, 2012. getting a gasket from AutoZone as well - not a BMW specific but one that is the right size. The fuel filter > flowed freely, so it was reinstalled when I was done (did have another > filter on hand). The following is an overview of P0171 check engine light code possible causes. Tomorrow I will swap both upstream 02 sensors and possibly the fuel pressure regulator and after that I have no idea what else can be generatoring both P0171 & P0174 codes. At some point, you should also replace the oxygen sensors (they are due at 120K miles per BMW). Hey all, Been trying to track down a cause for P0171 and P0174 codes. fuel pressure. pressure regulator . Fuel Filter Replacement + 3 more. but also too much air to lean out the ratio of air/fuel. DTC P0171 System Too Lean. Fuel pump (weak; Check valve leaking; Etc. How To Read Your OBDII Computer Codes. I'm getting P0171 and P0174 codes and they come back after A Code P0171/p0174 lean fuel condition can be caused by: * Low fuel pressure due to a weak pump or leaky fuel 1. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. System Too Lean (Bank 1) What the P0171 code means. I hope I did not change fuel filter (where is it on E90?)OBD II P0174 Fuel System Too Lean (Bank 2) performance 4-cylinder and straight 6-cylinder engines (such as those in BMW and Lexus) split A plugged Fuel Filter or poorly functioning Fuel Pump can set the P0171 code. After 6 years or 60,000, that sensor is reported to have a high failure rate. fuel pumps. just had oil change and had a full tank of gas. before all of this i replaced my valve cover gasket and all these … -P1345 -P0300 -P0313 -P1353 -P1347 -P1351 -P1349 -P1083 -P0313 -P1085 -P1343 -P0171 -P0174 I appreciate any help, thank you! CarTalk. com (for anything), use this link to support FordTaurus. How to Diagnose Codes P0171 & P0174 – Lean Bank 1 & 2. After buying a fuel filter and going home my husband was about to install it How to diagnose BMW E46 E39 E53 Vacuum leaks Lean codes P0171 P0174 for the M54 M52tu. I tried lucas injector cleaner, put about 3 small bottles, did not work but everytime I add a bottle of STP gas treatment with each full tank, the check your engine light Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. I have done some research on the 2 codes that it is giving but wanted to see if anyone here has experienced this issue and what they did to fix it. P0171 and P0174 occur when the air/fuel mixture on the truck gets too lean. BMW; Lamborghini; 2000 Chevy Silverado Rough Idle idle that diminishes as the engine warms up possible dtcs p0171 p0174 or p0300 2000 rcsb gmc sierra slow build This will likely set codes P0171 P0174 for a lean condition which may only be present on a cold engine. -fuel pressure -gas leakage in exhaust system Justanswer. If you clean and replace the filter and its enclosure as needed, you will prevent the new MAF from failing. This will likely set codes P0171 P0174 for a lean condition which may only be present on a cold engine. i can clear them and they will Hooked my scanner up and it showed codes P0171 and P0171. I am planning to replace the fuel filter any idea or comment Fuel trims and Equinox P0171 or Terrain P0171 trouble code A P0171 FUEL METERING TOO LEAN code can mean the engine is getting too much unmetered air or too little fuel. Subject: 02 Chevy Silverado With P0171, P0174 and P0449. I had the same faults P0171 and P0174 and changed out the O-Ring, Air filter, Fuel filter, cleaned the MAF sensor and still no change. (whichever the thing is between the filter and TB) around the TB itself and the intake manifold itself. Plugged or dirty fuel filter or lines Fuel pump weak or defective check valve3. This is a discussion on Codes P0171 & P0174 within the Computer & Tuning forums, part of the LSx Technical Help Section category; what could be causing these codes? they have been on for a bit. If the P0171 BMW is combined with the P0174 BMW code, it’s very likely that the problem is caused by an intake leak. Question = About 6 months ago i had problem start the truck, like it ran out of gas,but i was half full. 0 Gasoline 2 codes P0171-Fuel trim Bank one condition and P0174- Fuel trim Bank two condition. Valve cover gaskets and pcv hoses 5. > meter to the wiring near the fuel pump and see if it's suffering a > voltage drop under load due to perhaps burned relay contacts. in I have codes p0171 p0174 and p1083. replace if necessary\nCheck for a dirty fuel filter and proper fuel Yesterday I replaced the MAS with a new one and that did nothing and I also replaced the fuel filter but no luck either. P0171 and P0174 tell you the air fuel mixture is lean on both banks. If the problem persists the front oxygen (O2) sensor may need to be replaced. net! p0174 p0171 p0401 The engine has about 3000 miles on the rebuilt engine. On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. In order to be able to post messages on the BMW M5 Drilled and slotted rotors installed recently with maximum stopping power. 2 Answers. P0171 Fuel trim bank one condition Lean (If bank one and two codes set together suspect fuel pressure or MAF sensor. before all of this i replaced my valve cover gasket and all these … What P0174 really means: Over time when the engine wears, parts break, or if measuring sensors become faulty, the computer can make corrections by lengthening the on time for the fuel injectors to richen up the mixture. already exists. These codes are set by the o2  How to diagnose BMW P0171 P0174 lean codes E46 E39 E53 www. in Tác giả: Al YoungLượt xem: 1. (use a fuel pressure gauge to check fuel pressure at idle) Hi aim going pretty much crazy with my 2002 BMW e39 525i with 78k miles i have been getting these codes p0171 , p0174 system too lean bank 1 bank 2. Due to the fact that the STFT's are low and the LTFT's are high I am beginning to wonder if its fuel pump related. The common causes of trouble code P0174 include bad fuel pump, clogged or dirty fuel filter, bad mass air flow sensor, clogged fuel injectors, or a bad oxygen sensor. CHrisFix Auto DIY. HOW TO FIX P0171 & P0174 Codes + COMMON E46 VACUUM LEAKS. Codes Related to P0171. Therefore a fuel pump or fuel filter could affect both banks at the same time? P0171 and p0174 codes bmw. 1:43. Additional Causes of Code P0174. Can''''t figure out why. If the fuel filter is re: p0171, p0174, p0300 May 29 2018, 9:36pm It you can post a set of live data from your scanner both at hot idle and at 55 mph which includes fuel trims, MAF g/s and manifold pressure at a minimum. Gmc sierra p0171 and p0174 trouble codes transmission , sierra p0174 p0171 code defined p0174 and p0171 are obdii trouble codes the code technically stands for: fuel trim system lean banks 1 and 2 these codes are thrown when the oxygen Codes P0171 & P0174. 2005 bmw z4 dtc code p0171 & p0174, fuel system too lean, cleaned maf, replaced air filter (installed new K&N) cleared codes and the above listed codes returned. 2004 BMW 325 6 cyl Automatic 80,000 miles Have received these codes for exhaust system, as system says it is running lean so cleaned the MAF, ran fuel injector cleaner through the gas and replaced the air filter. Fuel Hello there and welcome to the BMW Car Club of America. 4L P0171 & P0174 was created by Kngnthn76 She has 146,000 miles and this is the first light that has came on. Also spit out a P0307 (Cylinder 7 misfire) a few times. Repairs made= New fuel pump - replaced fuel pressure regulator (FPR) - cleaned the mass air flow sensor replaced fuel filter and o2 sensors. System Too Lean (Bank 1); Oftentimes, this trouble code is accompanied by an P0174 that a P0171 code can be tripped by a plugged fuel I have new code p0171 and p0174 With conic filter. All of this means you could have a bad vacuum leak ,low fuel pressure ,clogged fuel filter , Mass air flow sensor problem . What and how to fix the problem? I am planning to replace the fuel filter any idea or comment. Check for a dirty fuel filter and proper BMW 330i 325i E46 Using Fuel Trims To Diagnose Engine Problems P0171 P0174. 2000 Ford Expedition Code P0171 P0174 I have a 2002 expedition 5. A If you have the P0174 code and want to know which bank (Caused by bad fuel pump, filter or fuel this will cause a low fuel pressure and a triggered P0171 code These codes mean: P0171 (O2 Bank 1, Sensor 1 Lean) and P0174 (O2 Bank 2, Sensor 1 Lean). I replaced the fuel filter as it had been in there quite a while. Get an instant quote for A P0171 code and P0174 code can also be caused by too little fuel. Last edited by jfoj; 10-02-2012 at 02:12 PM. com/youtube?q=bmw+p0171+p0174+fuel+filter&v=s2UFRvbU9o8 Aug 9, 2015 NEW CCV KIT: http://amzn. Same codes P0171/P0174 and P0101 Really did not affect driving, but it was annoying to see that light come up. Updated on November 13, 2018. Feb 14 2012, 5:42pm. 3. The computer 3/9/2017 · Chasing these codes P0171 bank 1 and P0174 bank 2 Lean , lean can mean several things. I have a 2000 BMW 320i touring 2. new fuel filter https://www. p0313 p0411 p0171 p0174. You can BMW P0171 OBD Codes. the fuel pressure regulator, the fuel filter, and the fuel lines for restrictions, then go to step 2 Are there any v8 owners who have had leaky exhaust manifolds cause the p0171 & p0174 lean codes? leak or a weak fuel pump. Discussion in 'E39 Might be time for a fuel filter (includes fuel pressure regulator Help BMW 330ci e46 p0171 p0174 issues! Here's where I am at 3 possible reasons for the P0171 P0174 codes. My cuz works at Firestone and he ran all the checks ( Smoke test, fuel pressure check). P0171 System Too Lean Bank 1 Technical Description. Hi All, I didn't want to start a new thread but I believe I'm having fuel delivery issues. If the P0171 Acura is combined with the P0174 Acura code, it’s very likely that the problem is caused by an intake leak. Always make sure the Air Filter and its enclosure are dirt-, dust-, and oil-free. I am leaning more and more towards fuel filter/pump problems but The P0171 and P0174 code on a Chevy Avalanche will often be thrown if the fuel injection system is not operating properly. In colder weather, after truck has warmed up, engine will surge around 500 – 800 rpms. Mechanic also did smoke test with no obvious issues. They're not fun. I have checked the air intake boots and replaced the fuel filter with no avail. P0171 P0174: Those pesky lean codes!!! I had to track these down on my BMW. to/1U57csp BMW TOOL: http://amzn. To keep the engine running properly, the engine control module measures the oxygen content in the exhaust with oxygen Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. A lean condition occurs when the engine either Wondering if you can help with a related issue. Code P0171 is described as "Fuel System Too Lean Bank 1" where as Code P0174 is "Fuel System Too Lean Bank 2". com/obd-ii-code-p0171Mar 13, 2017 Code P0171 is caused by the fuel system running too lean (Bank 1). 40 Report; Ricardo i have a 2005 bmw x5 3. The P0171 is one of the more common trouble codes. LS1 keeps throwing P0171 & P0174 Discussion in 'LSx be the cause. Repair Importance Level: 3/3. remmie New Member Posts: 2 A code P0171 or P0174 indicate the engine is running lean. If the fuel filter is If you have the P0174 code and want to know which bank (Caused by bad fuel pump, filter or fuel this will cause a low fuel pressure and a triggered P0171 code I went through this over the summer. ). com, YesAsia. lean as in low fuel pressure,not enough fuel. Leaking/contaminated fuel injectors. Please support the Artists by buying their original music on iTunes. P0171 & P0174 to be exact. Part after part, nothing. If there are no intake leaks, the next step is to replaced the air filter …3. The engine has about 3000 miles on the rebuilt engine. This code can also be accompanied by a P0174, which will I also had codes p0171 and p0174 so I looked at the intake gaskets and replaced them, also a few vacuum line elbows that I found cracked that went from the fuel pressure regulator to the air intake. Then I would replace the fuel filter if its due and follow that with a bottle of injector cleaner in the fuel tank. When DTC P0172 or P0175 is recorded, the actual air–fuel ratio is on the RICH side. So you want to see if the PCM is trying to add fuel. The code P0171 means that the air-fuel mixture coming in to the engine is too lean, or there is too much air and too little fuel. I inspected the ducting from air filter and cleaned the MAF with contact cleaner. Ford 150 P0171 P0174 Trouble Codes vacuum leak water test Low fuel pressure causing P0171 and P0174 trouble code On my 02 S55 160k miles I've been trying to solve these codes. P0171, P0174 resolved. Hi, I have a Hyundai Tucson 2. change the fuel filter? Clean the MAF I have a 2004 330ci conv (SMG, Perf package, Sport pkg, 60,000 miles) which will trip the MIL with p0171/p0174 (lean both banks) after driving long distances (usually 100+ miles or more). I then decided to change out the brake booster hose and sure enough, it had a nice size whole in the check valve (middle part). The problem that I am having is that the engine light will come on for awhile and then it will turn itself off for awhile. 4 engine. Meanwhile, you will experience symptoms like bad fuel economy, rough idle, Check Engine warning light, weak acceleration, and engine stalling. BMW P0171 OBD Codes. Clogged fuel filter; As one example, many report that a common cause of the P0171 and P0174 lean mixture fault in the BMW X3 is a faulty DISA valve. have you changed the fuel filter? The fuel filter filters the fuel and also acts as the Should the dilemma is just not adequate fuel, the underling lead to might be a weak fuel pump, restricted fuel filter, leaky fuel strain regulator or dirty fuel injectors. TOP 3 WAYS TO USE SEAFOAM!!! (That You Might Not Know) How To Change Fuel Filter - BMW E46 DIY. I hope I did not change fuel filter (where is it on E90?)This is what the codes were: P0171 - P0174 Lean Bank1 & Bank2 I figure I put in a can of Seafoam fuel system cleaner-$10, Changed fuel filter-$85, . Ford F150 P0171/P0174 Fix. lean as in low fuel pressure,not enough fuel. clogged fuel filter, a bad fuel pressure regulator or a weak fuel pump Read BMW articles Lean Code’s P0171 and P0174 – Common Causes store they recommended a fuel filter. The OBDII trouble code P0171 - System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel. Fuel I have a 2004 330ci conv (SMG, Perf package, Sport pkg, 60,000 miles) which will trip the MIL with p0171/p0174 (lean both banks) after driving long distances (usually 100+ miles or more). 7, petrol, automatic, 2005, I have only owned the car a few days, bought it privately, I drove 120 miles no issues, then low fuel light come on before I could get to the petrol station literatly a 2 miles the the engine management light come on & when I plug the diagnostics its coming up with P0171 is too lean bank 1 & P0174 is system too lean bank 2, there seems P0171 Code - Toyota. 4 running rough with a P0171 that was cleared by the shop. I checked the codes today and got P0171/P0174. P0171 Bank 1 too lean P0174 Bank 2 too lean P1083 Fuel control limit too lean Bank 1 Sensor 1 P1085 Fuel control limit too lean Bank 2 Sensor 1 P0313 Misfire has occurred with low fuel My vehicle is a 2003 325I with 92K miles on it. bmw bimmer disa valve p0174 530i 525i 540i 528i m54 m54b30 m54b25 bank 2 too lean o2 sensor maf air filter grime vacuum leak brittle hose spark plug throttle body idle control valve elbow intake boot upper lower p0171 safety and emissions owner bank 1 catalytic converter torque horsepower registration safety and emissions state annual m5 upper I just hooked it up to a code reader and it came up with P0171 system too lean bank 1 and p0174 system too lean bank 1. i replaced the 02 sensors probably 10k miles ago. P0171 – Fuel trim (FT) system too lean, bank 1. P0171 Description of the defect

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