Bmw code p0171 and p0174. 5 years since the last time.

Bmw code p0171 and p0174 Idle Issues – With the air/fuel mixture altered, the vehicle can idle erratically as the computer compensates to keep the engine running. Lean bank 1, bank 2, MAF insufficient air intake. I bought new Bosch 02 sensors because I have the money. 5L. 5 years since the last time. P0171 P0174 P0167 it has been cleared and returns. Jan 5, 2013 · 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. In this video, I solve the engine codes P0171 and P0174; which signify a lean condition on both banks of cylinders. P0133, and P 0304 Jul 7, 2020 · If you have this code along with P0171 and P0174, ignore the P0300. 0i). I have replaced both the DISC Valves, Cleaned both the Vanos Solenoid's. Then it started throwing the P0171 and P0174 codes. 8% not down. P0174 - Fuel Trim System Lean Bank 2. - Poolman's canonical thread on battling vacuum leaks on the BMW I6 with lean-condition misfire DTCs Apr 3, 2020 · I have a 2003 bmw e39 530i with 197k miles on it. Also replaced my PCV/CCV then too along with fuel filter, fuel pump, bunch of vacuum lines and DISA (failed diaphragm). Jun 15, 2010 · Mine threw both P0171 and P0174 Codes which, from everything I read, is a too lean condition. Assumptions 1. How is the BMW P0174 code diagnosed? The BMW P0174 code can be diagnosed using an OBD-II scanner, which will read the code and provide information on the specific issue causing the code. Along the way it threw a SES light, smelled like burning oil, had a low coolant light, was sputtering at stop lights, and had a 30% drop in MPG. My 2003 530 gave me troubles 3 weeks ago and it's been sitting every since. This will also help with diagnosing BMW's 1999 to 2006 E46, E39, and E85 with an M52 or M54 en Codes P1167, P0171 and P0174 2003 Hyundai Santa Fe. A. I checked the main elbow joint on the air intake and it had a huge tear. 0 liter i have codes p0313, p1083 Jun 16, 2013 · Auto Zone's code is P2240 and P0171 P0174, my own ODB reads P0444 P0171 and P0174. I just checked my intake boot based on nathancarter's picture and found a crack in exactly the same spot. A lean condition occurs when your vehicle’s air-fuel mixture has too much air and insufficient fuel. but running smoothly enough to think how could this engine possibly running like that with a lean condition. Might want to check the air distribution piece as suggested by the Poolman. I wonder if I can eliminate Intake, Crankcase, Throttle body CCV, IACV, and concentrate on items only affecting bank2, like the O2 sensors? Is there anything else that's only Bank2 related? Thanks, for you advice. May 14, 2023 · What causes P0171 and P0174 codes BMW? P0171 is triggered by the engine bank 1 “upstream” oxygen sensor and P0174 is triggered by the engine bank 2 “upstream” oxygen sensor. FAQ: BMW Code P0171. to/3ES6aK0 Well it something happened when I changed the CCV Valve, VCG and the Sparkplugs in my E46 BMW 325xi. VACUUM LEAK BMW E46 E39 E53 383 X3 X5 Z3 Z4 E60If you have BMW and you have code P0171 System Too Lean Bank 1 or co Is there an air/fuel sensor on a bmw x3 3. 3 years dealer experience, master Jan 16, 2013 · Code Reader https://amzn. Atozone scanned for me and the code P0174 system too lean bank 2. Jan 3, 2018 · SOURCE: 98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+ po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them. It should be 50 PSI +- 3 PSI. Mar 24, 2019 · All, I purchased my 2004 x3 (M54/3. Jan 10, 2022 · When I retrieved the codes from this Chevy Traverse, I got two codes: P0171 - Fuel Trim System Lean Bank 1. Today my check engine light came back on and I notice the car idle around 500 to 600. Q: What does BMW code P0171 mean? A: BMW code P0171 indicates that the engine is running too lean (excess air) on bank 1. Cleaned the Mass Air flow sensor. Learn how to monitor long term and short term fuel trims. Jun 7, 2014 · P0171 BMW 227, System Too Lean (Bank 1) P0174 BMW 228, System Too Lean (Bank 2) Clearing yet again, and driving for a dozen additional miles, I found, in this order when I shut the engine down to look for vacuum leaks: DTC. 0 w/ 153,000) and it immediately threw P0171 & P0174 lean banks 1 & 2. The solution was replacing an o-ring. Both times it went away after. 2010 BMW Z4 35i - toy 2016 Volvo XC90 - dogmobile. In this case, the oxygen sensor upstream from the catalytic converter is sensing a lean condition. It’s a 2002 BMW 325Ci with 143,000 miles. Learn what Mixture Control System Too Lean means, location and how to repair? If the P0171 is combined with the P0174 code Jul 21, 2018 · P0171 P0174 2011 328i 73k miles I have been fighting P0171 P0174 lean codes for months. 1. P0171 and P0174 Symptoms. - It is not a "bad tank of gas". Sep 10, 2024 · With the right knowledge and approach, you can effectively manage BMW code P0171 and ensure your ultimate driving machine continues to deliver the performance and reliability you expect. 3 years dealer experience, master Nov 4, 2011 · SOURCE: p0171 and p0174 codes. These codes can point to a ton of possible causes. The oxygen sensor alerts your system when the condition is too lean meaning there’s too much oxygen in the exhaust. However, I just replaced this thermostat about two years ago but let's move on. It should resolve when you get the air/fuel mixture issue fixed. 2007 BMW 528xi with Lean Code P0171 Bank 1 Only Aug 19, 2009 · I fixed my P0171 and P0174 codes and wanted to pass along what I learned. Maf Apr 3, 2016 · hi, i have a 2003 bmw x-5 3. Happy driving! FAQ. I scanned my car and was getting 1. I've replaced a lot of parts so far in perusing this: *new valve cover gasket *spark plugs *coils *cleaned the MAF *New air filter *New throttle body boot *New ccv *new disa 2009 BMW 328I code P0171, p0174,P0153. Can an exhaust leak cause a P0174 code? A vacuum leak is the most likely reason for a check engine light on and Fault Codes P0171 and P0174. Your BMW engine is equipped with oxygen sensors - small probes that extend into the exhaust system (usually near the catalytic converter) that measure the amount of oxygen left after combustion. Feb 24, 2020 · So my check engine light came on, I scanned it and it's a P0174 and P0171 code instead of both the P0171 and P0174 codes. You can get a Peake reader which will read BMW-specific codes, which should pin-point things a little further. Aug 16, 2018 · Welcome to ShopLifeTV!In this video I go over the most common causes for the p0171 and p0174 codes. With most vehicles, the most common cause for the P0174 or P0171 code to show is a vacuum leak. Mar 3, 2015 · P0171 and P0174 2003 Bmw 325i. 2002 e39 bmw 530i, codes are p0171, p0174, p1083 and p1085. Bimmerpost ☰ Model Selection. Jun 24, 2021 · I pulled codes P0171 and P0174 PowerTrain "System Too Lean" from my 2010 CT EX-L. 1% and 10. I have tore apart the intake system 20x and found nothing. Removed and reinstalled the intake boot several times, changed the plugs (they were due) and the air filter. Q: How much Mar 9, 2022 · I have constant p0171/p0174 on my car and if I’m going 35 and put pedal to the floor it goes in limp mode. Bank 2 is the bank of cylinder that does NOT contain cylinder #1. Jul 2, 2022 · Plagued with p0171 and p0174 codes, I tracked down all potential vacuum leaks but would still get the same codes. Vacuum Leaks. AZ read codes of p0174 and p0171 lean bank 1 and 2. Learn what Mixture Control 2 System Too Lean Bank 2 means, location and how to repair? Code Tech Notes. Vacuum leaks (particularly at the intake manifold) and the MAF sensor are the most common culprits. How to Fix P0174 BMW Code Oct 31, 2016 · E46 p0171 and p0174 codes. It could be torn lower intake boot, ICV, throttle body, and MAF. Looks like someone chased this problem before and replaced every boot hose tb and disa. Feb 21, 2007 · I love this forum I just had a code P0171 so I replaced the bank 1 O2 sensor but the service engine light came back. BMW CODE P0171 P0174 SYSTEM TOO LEAN FIX. Oct 17, 2023 · A BMW fault code P0171 or P0174 means that your engine is getting more air than fuel, also known as running "lean". I just wanted to share my experience with these codes. Oct 13, 2012 · Patient: 2001 330i Symptoms: SES light on, car runs fine, mileage is fine (~30-31mpg highway). Sent from my SM-T713 using Bimmerfest mobile app Jun 18, 2013 · Threw the codes mentioned in the title. Hey gUys, Im new to this forum. The link below to a BMW 2004 document indicates you have SAE codes P0188 and P0189. Feb 25, 2013 · This is starting to become a problem on n52 engines. Both of these codes are 'lean conditions', which can be caused by any number of issues. 0L. Oct 12, 2012 · Fault codes P2240, P0171, and P0174. Anything ranging from a vacuum leak to a weak fuel pump can set these codes. Jul 21, 2010 · code P0171/P0174 I have the same vehicle: 01 X5 4. How to diagnose and figure out the exact problem. Changed parts: Valve cover gasket DISA valve gasket and new flapper with metal pin CCV valve and hoses Throtle gasket Purge valve Break booster check valve and hose with F This E46 came in with DTC's P0171 & P0174 codes for lean running engine. So I went down to AutoZone to pick up a few parts for my 330. I picked up the STP air filter. Check your fuel pressure if you are sure you do not have a vaccum leak. Anyone who has had to do the search for these codes knows there are many reasons and lots of things to try. Symptoms: 1. What I've checked so far: - Both O2 sensors surely would not have expired at the EXACT same time. The sensor that monitors the position of the valvetronic. Feb 19, 2020 · P0171 and p0174 code. So, that has been resolved. 0 liter i have codes p0313, p1083, p1085, p0171, p0174, p1348, p1350, i have already changed the George BMW Master Technician over 20 years BMW Dealership Experience. Turn off and restart and it’s fine again. Idle and Throttle body are good CCV I found lots oil on hose from VCG to CCV, all over the oil separation and underneath hose to dip stick. 2% air on bank fuel trim 1 and 2 and when I rev my car it went up to 11. ” They are dreaded by google mechanics who aren’t willing to invest the time to study the system and shoot the trouble rather than the parts cannon. That also means that one of my oxygen detected a wrong fuel/air ratio. Oct 1, 2008 · 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). Unfortunately! I'm actually experiencing the same codes too: (P0171/P0174) on my: 01 BMW X5 4. IDK, just started acting up. May 10, 2022 · What does BMW code P0174 mean? BMW code P0174 indicates that the PCM has detected a lean running condition in cylinder bank 2. Apr 23, 2020 · BMW CODE P0171 P0174 FIX E90 E91 E92 E93 316i 318i 320i 323i 325i 328i 330i 335i 318d 320d 325d 335dIf you have BMW and you have code P0171 or code P0174 Oor May 8, 2021 · I have a 2005 bmw x3 and codes p0171 and p0174 1. Common Causes of P0171 Code. com is an independent BMW Cost to Fix P0174 BMW. set the plug gap first i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems do the 2005 bmw z4 dtc code p0171 & p0174, fuel system too lean, cleaned maf, replaced air filter (installed new K&N) cleared. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated Dec 14, 2011 · Some of you may know I have been chasing codes p0171 and 174 at startup and cold idle, I replaced the vacuum hose in the back of the intake for the S. Apr 26, 2022 · As we have described above, mechanics go for replacements almost immediately, but they don’t check for other sources of the P0174 code. BMW wants $128. What does P0171 P0174 mean? Meaning. com is an independent BMW enthusiast website owned and operated by VerticalScope Inc I have a bmw 2003 x5 3. P0174 means you're running lean -- most likely a crack in your intake boots behind your MAF. border patrol that I got a CEL and P0174 (Carly adapter (INPA almost) states "Lean Deviation Banks 1 & 2). I had the codes read and found P0171, P0174 indicating both banks were lean. The codes are: P0174 and P0171 System to Lean (bank 1 and bank 2) Anyone else experience this on a X3? The car is an 05 X3 w/ <50k. It solved my random P0171 and P0174 codes. In many instances engine performance issues are not exhibited. Not sure what would cause only 1 bank to throw a too lean code though. 0:00 Dec 2, 2019 · Before the pump failing up (about 1 year) I keep having very aleatory the P0171 and P0174 codes. P0174 code P0174 and a few others came up today after I forgot to put the oil cap on. Jul 7, 2020 · Here are the most common causes of P0171 + P0174. Take a look around and see if you can find the vacuum leak. Apr 10, 2017 · I have a 2005 330i that gives me fault codes p0171 and p0174 bimmerfest. In short, the engine is running lean, but the computer cannot tell why. Quick search and this thread is the first result. For last two months I am getting 16 city and 22 highway. I have check vacuum at the dipstickengine noise changes barely noticable, vacuum is well under 1psi, needle barely flickeredwhich seems good I think? BMWP0174 BMW DTC P0174 Make: BMW Code: P0174 Definition: Fuel System Too Lean (Cylinder Bank 2) Description: Key on or engine running, all electrical components off and coolant temperature at least 80 degrees Celsius; and the DME detected the Bank 2 Fuel Control System reached its lean correction limit. Hello all, this is my first post. In my case it was a failed DISA valve which was causing a vacuum leak. Sep 10, 2016 · #BMW #E46 #HansGarageCommon fault codes for BMWs. If the P0171 is May 21, 2008 · It would make like popcorn shakes only when I stop my car with the engine on. codes P0174 - Powertrain ( system Apr 3, 2014 · All right guys, I need some help on these codes. Digging into the root cause of the P0171 code, you’ll likely find that one of several common culprits is to blame. Now, I cleared the codes and drove just a few miles (just after border patrol) before the CEL came back, but this time I got P0171 and it's staying in Pending codes (not stored) as of right now. Writing in because i've been battling these p0171 p0174 codes on my car. 25378 posts Apr 6, 2010 · About 4 weeks ago, my service engine soon light came on (2003 X5 3. Q: Can I still drive my BMW with the P0174 code? A: While you can drive short distances, it’s not recommended to continue driving with this code as it can lead to poor performance and potential engine damage. So then I thought vacuum leak. I reset them, and all was fine for several Mar 26, 2023 · P0171 & P0174 are probably the two most common codes an E46 M54 will produce. It had a leaking valve cover gasket so I replaced the gasket with a FelPro one including the bolt rubber grommets. The P0174 and P0171 codes are the only ones left that I can’t fix. When the idle is erratic, lean codes are stored, a whistle noise is heard and/or the oil cap is very hard to remove this indicates a faulty eccentric shaft sensor. Can you tell me the instruction to Oct 11, 2010 · no one seems to think the O2 sensor could be bad. Oct 18, 2010 · BMW P0170 and P0174 Hi, I have the same problem with P Code P0171 and P0174. Oftentimes, causes such as air/vacuum leaks are overlooked. The car get these codes intermittently. 4i M62 112,782 miles with the same problem also these codes are switched sometime from: (P0171/P0174) to (P1158/P1160) or a few time you might see all of them @ once. Mar 6, 2009 · Service Engine Soon warning is lit on my car. However, P0171 and P0174 are usually due to vacuum or PCV related issues that can be detected with a smoke test. 0, 104K miles. It also implies that the engine’s air/fuel mixture is incorrect, with too much air and inadequate fuel. new maf, new throttle By chatting and providing personal Jul 15, 2010 · 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. bluebee. 155,000. Here is a discussion of their meaning and their common causes. P1620 I have narrowed down to a faulty thermostat because it must be stuck open. The car appears to run fine without any problems. Bimmerforums is the preferred online BMW Forum and community for BMW owners. Oct 26, 2016 · 2005 X3 3. Oct 23, 2018 · [CODE]Confirmed Diagnostic Trouble Codes -P0174: System Too Lean (Bank 2) (Powertrain, Generic) -P0171: System Too Lean (Bank 1) (Powertrain, Generic) Pending Diagnostic Trouble Codes -P1083: Fuel Control Limit Mixture too Lean (Bank 1 Sensor 1) (Powertrain, BMW) -P1085: Fuel Control Limit Mixture too Lean (Bank 2 Sensor 1) (Powertrain, BMW) -P0102: Mass or Volume Air Flow "A" Circuit Low Aug 25, 2010 · help,p0171 and p0174 codes !!! Jump to Latest 7. I was able to quickly diagnose a bad valve cover gasket. After a cold start I got codes p0174 p1343 p1345 1347, I moved the coils around to see if the misfire would change no change, I installed new BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Codes P0171 & P0174 Google Search Search Forums Sep 12, 2024 · A: BMW code P0174 indicates that the engine is running too lean (too much air, not enough fuel) on bank 2 of the engine. Customer: Hi, I have a 2001 BMW 740il with codes p0171 & p0174 lean codes. Popular codes are P0171 P0174 P0300 2882 or 2883. I would like to clean MAF sensor but I don't know how. CCV has been replaced. S. Code P0174 mainly applies to V6 or V8 engines because 4-cylinder engines generally have only one bank, though there are a few exceptions. Had a buddy (ex pro mechanic) look it over closely, read the codes and clear the codes. The typical repair costs for addressing a P0174 code on a BMW can vary depending on the specific cause of the issue. The first thing I did was to take it to an autopart store, which in my case was O'Riley and the codes read p0174 and p0171, which meant my system were too lean on bank 1 and 2. P0171: Fuel System Too Lean (Bank 1) P0174: Fuel System Too Lean (Bank 2) Nov 30, 2013 · CoDES Codes: P0171, P0174, P1083 and P1085. The definition of a P0174 code is System Too Lean (Bank 2). 1K views 14 replies 4 participants last post by Mirawho Feb 26, 2022 Sep 25, 2011 · Not shown are also codes P0300, P0304, P0305 (misfire codes) Things I ruled out: Coilpacks -I switched them around to different cylinders. When I read the codes this time it had both P0171 and P0174. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Bringing the BMW community together. Mar 28, 2011 · They used a regular OBDII reader which only reads universal codes. Mar 3, 2016 · Codes were P0172 (Too Rich Bank 1) and P0174 (Too Lean Bank 2) Checked the upper and lower intake boots, ICV and throttle body (replaced all the boots and gaskets back in 2013). Nov 5, 2024 · P0171, P0174. I pulled the codes and it has the P0171 and P0174 codes (System too Lean Bank 1 and Bank 2 respectively) Dec 7, 2010 · Wife drove back from Kansas City to Fort Worth. com: Diagnosing P0171 and P0174; Remember, a well-maintained car is a happy car. 00 to run their test. LTFTs are ideally +/- 2. Genuine BMW CCV Kit ($60-ish: ccv & 2 OBD codes p0171, p0174 - system adaptive fuel too lean ( banks 1 and 2) JHoop 14 Year Engine Builder,16 years as a Tech HvyLine, Suspension, Electrical, Brakes, 6 Year Shop Owner Feb 20, 2013 · Now, have SES light with P0171 and P0174 codes. It has started running bad and throwing codes. Replaced those. Before last trip replaced spark plugs and fuel filter/regulator (all factory BMW parts) and lamp came on twice. I don't feel a rough idle, any suggestions will be appreciated Jan 10, 2025 · Understanding the P0171 code is vital to addressing the underlying problem and restoring peak engine performance. Jul 9, 2012 · The belt popped on my car, it was replaced, and then it threw a p1415 code. P0171: Mixture control: Fuel-air mixture too lean Bank 1 P0174: Mixture control: Fuel-air mixture too lean Bank 2 Apr 8, 2018 · The car is a 2002 BMW 330ci with just over 107K miles on it. Sep 25, 2022 · For example, if you receive fueling codes alongside BMW P0171 code then starting with fuel system diagnostics likely makes more sense. I have fault codes P0171, P0174, & P1620. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Apr 20, 2017 · Go buy a $$7 can of maf cleaner and try cleaning the maf sensor. It's been 2. Your issue is t the code, and getting the code to go away won't be a sign you have solved it, your issue is high fuel trims, which are caused by fuel delivery issues, vacuum leaks and sensor laziness/failure. MAF - Cleaned it twice. Oct 4, 2020 · I have pulled 3 different codes, P00BC, P0174, AND P0171. Ran the car disconnected. P0171 System too Lean (Bank 1) P0174 System too Lean (Bank 2) If a car has a check engine light on and has P0171 and P0174 codes stored, the most likely cause is a vacuum leak. Sometimes you will get plausibility codes that only the bmw ISID can read. I got a P0171 code and P0174 code about 2 months ago. Dec 30, 2011 · Ran it by autozone and find the codes are P0171 & P0174 indicating lean condition on bank 1&2. Oct 17, 2011 · 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. I searched around the site when I was diagnosing and it was very helpful: When I got the codes (and rough idle), I searched for vacuum leaks and found the common one where the intake hose connects to the throttle body. Jump to Latest Pre-BMW Whackjob (2014): 1977 Monte Carlo, 1966 Chevy, 1986 Monte Carlo SS, 1978 Caprice Classic, 1992 Camaro Jan 16, 2025 · If you want to attack the P0171 and P0174 codes first, do a smoke test and a fuel pressure measurement at the fuel rail. Drove over 100 milescodes still on 5. Check with a BMW scanner, they sale for like $60 on amazon, some codes are shadow codes that will not turn on the check engine. I tried to tape it as a temp fix but still nothing. Jun 9, 2018 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. These codes are set by the o2 sensors detecting a lean co Mar 23, 2007 · After all I'm glad my friend that (you were lucky to step your foot on the right spot) which was the air mass sensor on your car. Thanks guys! Read codes p0171 and p0174 - lean codes. 0% Jun 14, 2020 · Repair Information for P0174 BMW code. Jun 5, 2015 · See also: - Poolman's canonical thread on battling vacuum leaks on the BMW I6 with lean-condition misfire DTCs & where to find all the vacuum hoses, tubes, pipes, and endcaps in the E39 engine bay & where are all the fuel injection o-rings & how to locate all the o-rings and gaskets & where in the USA to get new vacuum tubing & end caps & what SAE sizes to get for all the metric M54 engine Dec 16, 2017 · Diagnosing a 2005 BMW X5 E53 with fault codes P0171 and P0174. No running issues noted along with light. At 247k miles, the first thing to check is the Fuel Pump. The P0174 codes is always primary. Idle is rock silid, never misses or stumbles at all. I got a smoke test and the only places leaking were the CCV and 1 cap on the back of the intake. Intake boot replaced with after market 2. Jan 6, 2015 · I bought a code scanner and got p0171, p0174, p1083, and p1085. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Oct 20, 2021 · OBD II fault trouble code P0171 is a generic code that is defined as P0171 – “System Too Lean – Bank 1” and is set when the PCM (Powertrain Control Module) detects an overly lean air/fuel mixture on Bank 1, which is the bank of cylinders on V-type engines that contains cylinder #1. I clean the MAF sensor every year. The P0171 trouble code triggers when PCM detects a lean condition in cylinder bank 1, while P0174 triggers when PCM detects a lean condition in cylinder bank 2. I cleared the codes and they haven't come back, but the car still won't start. All other hoses checked out okay and no visual leaks 4. I see that there is no straight fix for this. Tags log lpg p0171 So I too have these codes on my E46. I have a bmw 2003 x5 3. Apr 21, 2012 · The third day after I got it, the check engine light came on, I scanned it and three codes came up, P0171, P0128, P0174, P0171 was Bank 1 system too lean, P0174 was Bank 2 system too lean, P0128 was Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). Still idles rough. Save Share Reply Quote Like. bimmaster. i swapped the plugs on the pre-cat sensors and the p0174 code went away, engine ran rough, and i had pending codes: P1343 Misfire Cylinder 1 With Fuel Cut-off (BMW) P1345 Misfire Cylinder 2 With Fuel Cut-off (BMW) P1347 Misfire Cylinder 3 With Fuel Cut-off (BMW) Mar 25, 2017 · SOLVED: 2009 BMW 328XI E90 N52K Engine -- dreaded P0171 /P0174 codes Hi, First time posting here so be gentle. I had great luck using the method I mentioned previously. 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, this guide is for you. The smaller hose had a tear about 1 inch long. I have read posts from this forum and many others over the past 3 weeks trying to determine my particular issue. May 21, 2018 · So codes are p0171 and p0174, I open and check all in take boots and inspected they are goood DSAV seems good , gasket seems good and it has functioning well. 0i or is it just the o2 sensor? I am getting codes p0171 and p0174 Q&A: Air/Fuel Sensor in BMW X3 3. 2004 BMW 325i, codes P0171 & P0174 what means system too lean bank 1 and bank 2, the issue that was causing this codes was a bad Disa Valve that you can bu 2004 BMW 325i, codes P0171 & P0174 Jul 31, 2015 · Throwing codes P0171 and P0174 Jump to Latest 15K views 56 replies 7 participants last post by 2006e83 Aug 26, 2015 Aug 21, 2020 · Welcome back everyone! Today we tackle the annoying problem of lean codes on our e46 2003 330CI convertible. 0L with about 180k miles. I read the many P0171, P0174 threads, but I'm only getting a P0174 which is only bank2. com is an independent BMW enthusiast website owned and Feb 20, 2015 · I need some help. Watch this video for expert mechanic help diagnosing P0171 code causes, and keep reading for more details: What Does Code P0171 Sep 15, 2022 · 2005 BMW X3 engine code P0171 P0174 and than a bunch of misfire codes. I installed them and the code came back. I'm getting a p0174. After I got it all. I have seen a bunch of posts on this but in each case the car was still running. 0i - P0171 & P0174 Codes What makes this code tricky is if this code appears by itself, there is NOT a monitored component that has failed, or it would be getting a code as well. The car started idling rough today and I pulled the codes - P0171, P0174, and P0303. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. 8% to 4. Second time it was the intake boot. I have followed the forum trying to correct the Mar 26, 2017 · For some time now I have repeatedly had a check engine light and the following codes: P0171 Bank 1 system too lean P0174 Bank 2 system too lean Everytime I erase the codes, they return in about a week. The maf was replaced, and now i have a p0171 and p0174 code. Here's my data: 2002 BMW 325xi about 140,000 miles. 9K views 9 replies 5 participants last post by sb5437 Feb 17, 2011 Jun 19, 2010 · 2002 BMW 525i P0174 OBD-II trouble code compendium: P0174 = "System Too Lean (Bank 2)". Meaning. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by May 25, 2022 · System Too Lean – Code P0171, P0174. Parts such as an oxygen sensor, fuel injectors, or a mass airflow sensor can range from $100 to $500 each. Today we cover how to fix those annoying lean codes on most BMW models. Jump to Latest 2007 BMW 335i FBO 6MT - Current 2013 Nissan Nismo 370Z - Current 2004 Non-M Facelift Coupe - SOLD Jun 8, 2016 · 2005 E83 with 130K miles. I have an OBD sensor and hooked it up and ran the codes and it gave the results: P0174 - System to Lean (Bank 2) P0171 - System too Lean (Bank 1) I have been looking at different forums as well as you tube and even the OBD Code results site to read about the issue and most of what I am seeing is the MAF or Mass Air Flow Sensor being Jan 22, 2014 · A forum community dedicated to BMW owners and enthusiasts. From what I've read online on other boards it could be an O2 sensors, MAF sensor, or a vacuum leak. '05 X3 3. After changing the gasket (no more leaks) The Service Engine soon light came on. Dec 6, 2010 · Today I was driving and the Check Engine Soon light came on. When i had my P0174 and p0171 it was the lowest stream o2 sensor. I have searched countless articles about this, and I hope I can pinpoint the issue given my unique symptoms. Code P0171 applies to Bank 1 and P0174 applies to Bank 2. I go thru some of the common areas to test and how the MAF readings led to finding Apr 23, 2023 · EVAP leaks can also trigger lean codes as the EVAP system is connected to the intake manifold! This may not show up on a smoke test. 4i E53/M62 engine type I've cleaned the air mass sensor, but after a few driving around same codes came back again. And I did observe that when I was driving in town, at around 60Km/h after a day, the code disappeared, but as soon I was getting on highway, at more than 75-80Km/h the check engine cames on. Tried a Autozone brand MAF, $300 price tag, reset by pulling battery terminal for over an hour and replaced. i have changed all air intake hoses. running a little rough at idle and making a whistling chatter noise at idle so i ordered a disa repair kit and installed it along w … read more Repair Information for P0171 BMW code. Q: Can I drive my car with P0171 and P0174 codes? A: While you can drive short distances, it’s not recommended for extended periods. What else could be the cause? Sep 17, 2021 · 2001 Z3 3. bmw コード p0174 は、pcm がシリンダー バンク 2 でリーン運転状態を検出したことを示します。 また、エンジンの空気と燃料の混合気が正しくなく、空気が多すぎて燃料が不十分であることも意味します。 BMW X5 CODE P0171, CODE P0174 FIX EXPLAINED, BMW E70 E53 F15If you have BMW X5 and you have code P0171 or code P0174 we will explain the top reasons that we Jul 12, 2019 · CODE P0171 P0174 SYSTEM TOO LEAN VACUUM LEAK FIX BMW E46 325I 330I 328I 320I 323i 325xi 328xi 330xi 320xi 330CI 325CI 320CI If you have BMW and you have code Oct 11, 2019 · My first experience with the P0171 / P0174 codes was the broken oil return line. Sep 10, 2022 · 2001 X5 - Lean Codes P0171 and P0174. . 3 years dealer experience, master Dec 13, 2024 · “seems like the p0171/174 codes are dreaded because it seems to lead people to start replacing parts and it is difficult to track down what exactly is causing the lean codes. - E46 P0174, P0171 Codes - E46 New Disa - Car Died Again - E46 Gas Flow Issue How to fix code BMW X3 X5 CCV or PCV Lean Code P0171 and P0174 Mar 14, 2010 · I pulled the P0171 & P0174 Bank 1 and 2 running too lean codes. Seems to be codes that are regularly thrown and list of possible faults is quite long if you search this and other BMW forums. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm 2005 bmw z4 dtc code p0171 & p0174, fuel system too lean, cleaned maf, replaced air filter (installed new K&N) cleared. P along with the endcaps and cleared the codes. Twice in my 8 years of owning my 05 x3 I've got codes p0171 and p0174 at the same time (similar code). Spark plugs - I installed fresh Bosch plugs. bobz_rodz P0171 and P0174. On start up is idles rough but after a minute or so it stops and is fine. I will get the code every 7 days or so assuming I drive Jul 3, 2019 · It wasn't until right when I hit U. MAF replaced with after market 3. You may also get fuel trim codes be Sep 10, 2024 · CarMD’s Guide to P0171 and P0174 Codes; Samarins. This was caused by a vacuum leak on the intake b Feb 5, 2021 · And it did run fine, check engine light wasn't on any more and the car idle about 750 to 800. bimmerfest. The rpm gauge shows between 800 and 1000 rpm in parking\neutral\stop light. 0i Alpine White/Gray Leather/Alum. After a day of driving on it these codes popped up. After learning of the common vacuum issues with the M54, I decided that I wanted a solid foundation to start from and tore into the motor. Made no diff in the codes. These codes are set by the car’s computer when it sees too much oxygen in the exhaust. Appreciate 0 Jan 5, 2009 · Now the test results read just one code P0174( system to lean bank 2) and my wife took it to autozone and they hooked it up and said ECM has detected a rich or lean air/fuel ratio condition on engine bank 2. Visually inspect it. Feb 1, 2008 · The first thing I did with this car after I bought it was perform the 60k mile service, including plugs, airfilter, fuel filter, etc. P0313 BMW 238 to BMW 243 inclusive, Misfire Detected with Low Fuel; P1085 BMW 203, Fuel Control Limit Mixture Too Lean May 8, 2008 · What tool did you use that indicated the P0171 / P0174 codes? Your INPA in showing BMW codes 227 and 228 that are not indicated as SAE codes P0171 / P0174. 2017 Pilot EX-L 2wd (51k) • 2013 BMW X5 35d(109k) 2014 Nissan NV3500 (234k) Jun 8, 2012 · CODE P0171 and P0174 | Find answers to your 2004 BMW 325i question from certified mechanics and auto experts. I hope people can give me some insights. 2005 bmw z4 dtc code p0171 & p0174, fuel system too lean, cleaned maf, replaced air filter (installed new K&N) cleared. I've been reading up on this and wondering if the lean condition can cause the misfire as opposed to the coil being bad and causing the misfire. F40 BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Engine / Drivetrain / Exhaust P0174 code — The most likely causes and fixes Learn what a P0174 code means and the most likely causes. The symptoms of the BMW P0174 code can include a rough idle, poor acceleration, decreased fuel efficiency, and the illumination of the check engine light. I found cracked pipes, intake tubes, etc. Oct 12, 2017 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. The lean codes showed up a short while later (like a month after I bought the car). The hard line that runs from the purge valve to the firewall is a common point of failure. Carefully used MAF cleaner on the MAF meter. Oct 4, 2020 · So OBD fusion is what you will use to monitor progress. I have 2 scanner tools, the Innova 3100 w/ABS and the Creator tool specific to BMW. Apr 18, 2020 · Hello, I have been working to resolve rough idle and "check engine"/SES light with codes P0171 / P0174 (system too lean). Oi P0171/P0174 Lean Codes Help Jump to Latest 4. Aug 5, 2021 · Recently bought my 2001 BMW Z3 Roadster 2. The light been on for acouple thousand miles. I have a BWM x3 2005 3. i was getting codes P0171 and P0174. I know what the codes mean (running lean) but i still can't find the problem. In which case, even if you replace the sensors, the trouble code will remain. Scanner says P0171 and P0174 which is lean banks 1 and 2. I made a home made smoke machine, and the only leak seems to be coming from the crankshaft pully. gojjql isuzn xodv uzbnzk guuzgd wimqp fhrr nuxy xtmvrz xsjoh