Po174 code bmw

Common Causes for Codes P2096, PO171 & PO174- Find and Repair Lean Air Mixture Issues- 2010 Kia Rio 1.6LToday I discuss common causes for codes P2096, PO171 ...

Po174 code bmw. Bank 2's O2 sensor recognized a lean mixture, causing a P0174 code to appear. A fuel mixture of +-15% can be corrected by the O2 sensor. The P0174 code will be stored in the correction is outside this range. Air-fuel mixture ratios of 14.7 parts air to 1 part fuel are optimal for combustion engines. An air-fuel mixture with more than 14.7 ...

Answer: BMW Code P0175 refers to a diagnostic trouble code that indicates a fuel system too rich at Bank 2. It means that the engine control module (ECM) has detected a surplus of fuel being injected into the combustion chamber on one side of the engine. This can lead to a variety of issues, such as decreased fuel efficiency and increased ...

Welcome to ShopLifeTV!In this video I go over the most common causes for the p0171 and p0174 codes. These codes are set by the o2 sensors detecting a lean co...Posted by u/beastman1993v2 - 1 vote and 1 commentWhat is the Cost to Diagnose the Code? Labor: 1.0. The cost to diagnose the P1347 BMW code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.The P0174 code is thrown when the bank two sensor one O2 sensor reports that your Impala’s engine is running lean. Swap Test. If your Impala has P0174 without P0171 present, you can swap the bank one and two O2 sensors and see if the code “jumps” to the other bank. Here’s what you do. Clear the diagnostic trouble codes with your …Feb 1, 2008 · The fault codes "2882/2883 - fuel trim, mixture too lean" are stored in the DME. CAUSE. Possible causes may include: incorrect air filter, unmetered air or a defective air mass meter. PROCEDURE. Remove and inspect the air filter element. Only the filter with the P/N 13 72 1 744 869 must be fitted. WHATS UP GUYS, I HAVE A 01 BMW 525i. I AM GETTING CODES P0455, ... 583 satisfied customers. my 2002 5 e39 520 has obd code po174 code and em..replaced maf. my 2002 5 e39 520 has obd code po174 code and em light is on have replaced maf and lamdas to no avail any ideas its getting rather tiresumm ...

Location: San Diego. iTrader: ( 0) X3 p0171 p0174 vacuum leak help. Hello all, this is my first post. I have a BWM x3 2005 3.0L with about 180k miles. Writing in because i've been battling these p0171 p0174 codes on my car. I've replaced a lot of parts so far in perusing this: *new valve cover gasket. *spark plugs.When it comes to luxury SUVs, few brands come close to the quality and style of BMW. But what’s the cost of a BMW SUV? In this article, we’ll explore the various factors that go in...I'm actually experiencing the same codes too: (P0171/P0174) on my: 01 BMW X5 4.4i E53/M62 engine type I've cleaned the air mass sensor, but after a few driving around same codes came back again. If that is the same case for me, it would be great!!! but if not, imagine trowing:$245.17 for my Part number: 13 62 1 433 567 @ Germanautoparts.com and ...The P0174 code is thrown when the bank two sensor one O2 sensor reports that your F250's engine is running lean. Swap Test. If your F250 has P0174 without P0171 present, you can swap the bank one and two O2 sensors and see if the code "jumps" to the other bank. Here's what you do. Clear the diagnostic trouble codes with your scanner.When a vehicle has the fault code P0174, it means that computer can no longer automatically adjust the mixture between air and fuel. Code P0174 applies to V engines as they will have two banks, Bank 1 and Bank 2. When the code says that the Fuel System is "too lean," it means that the computer has been adding more and more fuel, which is called ...May 8, 2021 · I have a 2005 bmw x3 and codes p0171 and p0174. 1. Intake boot replaced with after market. 2. MAF replaced with after market. 3. All other hoses checked out okay and no visual leaks. 4. Tried a Autozone brand MAF, $300 price tag, reset by pulling battery terminal for over an hour and replaced. Since you have both codes it could be one of the following MAF Sensor failed ... Seems to be codes that are regularly thrown and list of possible faults is quite long if you search this and other BMW forums. Top. ScoobyR1 Member Posts: 427 Joined: Sun Feb 01, 2015 5:05 am.Tech Notes. The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 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 ...

By Vlad Samarin, Updated: July 10, 2021. 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. Driving a car with the code P0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion temperature is higher.P1445 BMW Code - Diagnostic Module Tank Leakage Pump Control Circuit Signal Low - Code Popularity: 13,461 Views - Repair Importance Level: 3/3 - Repair Difficulty Level: 3/3. Table of contents. Created and updated by William Orellana on Aug 22, 2019. Possible Causes; How to Fix; Description;2001, 325i 2.5l auto, 228.229.227.226 bmw codes, po171,po174, set two time, bank one and b2. mass air reading 14hg/sec, somked the intake, no leaks,fuel pressure 53 psi, ... DISA valve, checked all sensors, ok code PO174 keeps coming up. When first starting the engine it runs a ...2001, 325i 2.5l auto, 228.229.227.226 bmw codes, po171,po174, set two time, bank one and b2. mass air reading 14hg/sec, somked the intake, no leaks,fuel pressure 53 psi, throdle body, at zero … read moreThe manufacturer of BMW is Bayerische Motoren Werke, a Bavarian automobile and motorcycle designer and manufacturer famed for its line of luxury sport and family vehicles produced ...If your BMW shows the P0174 code, then it means too much oxygen is in the mixture. The volume of oxygen and air are proportional to each other, so if too much oxygen is in the mixture, then it also means that the mixture is too lean.

How do i get to the blasted lands.

I have a 2004 BMW X3 with the check engine light on. When I took it to an auto shop they said the codes P0174 and P0171 - Answered by a verified BMW Mechanic ... good morning Steve my name Roland having a problem with my BMW x3 2004 engine 2.5l code p0174 an p0171 and vehicle runs rough I did tune up clear code road test check engine came back ...i have a 2001 bmw 325i (e46)..... throwing codes po171 and po174 we reset tha codes but need to reset tha service engine light does anybody know how to... in this thread in this sub-forum in the entire ... E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Content on E46 Fanatics …shanneba. 2557 posts · Joined 2008. #8 · Oct 11, 2010. Since you are only getting P0174 lean on bank 2 (cylinders 4-6) you could check the O2 sensor voltage with diagnostic software like a GT1/DIS Autoenginuity etc. There is an air distribution part on the top of the intake manifold.The P0174 code is thrown when the bank two sensor one O2 sensor reports that your Impala's engine is running lean. Swap Test. If your Impala has P0174 without P0171 present, you can swap the bank one and two O2 sensors and see if the code "jumps" to the other bank. Here's what you do. Clear the diagnostic trouble codes with your scanner.

Code Tech Notes. If the P0174 is combined with the P0171 code, the problem is likely caused by an intake leak or the Intake Plenum Gasket and seals. If there are no intake leaks, the next step is to replace the air filter and clean the airflow meter. If the problem persists, the front oxygen (O2) sensor may need to be replaced. Search for P0174 ...Code PO174, on a 2004 BMW 325i. If the air/fuel ratio is too lean, what can be done? any ideas.. thanks a - BMW 2004 3 Series questionSorry I am learning what is needed. The codes from the OBD11 mean lean in bank one and two. The peake code comes up as 18AE and 18AF which are Air-Fuel Adaptation Cycle 1-4 adn 5-8. The temp is in F and the car is always warmed up running at least 20 minute before the SES light comes on.Fixes for BMW P0174 Code. If you are experiencing the BMW P0174 code, it means that the mixture control 2 system is too lean in bank 2. This can cause a variety of issues with your vehicle’s fuel system, including reduced fuel efficiency, poor performance, and potential damage to the engine.PO171 and PO174 codes - engine light turned on and then turned off - now it's back on ... bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. Content on bimmerfest.com is generated by its users. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. …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 ...The codes that came up were p0171 and p0174. I have been reading on forums and believed it is the MAF, but then i read that the code for it is p0170. So I'm a little confused, can anyone help. :dunno: PLEASE, THANKS ... '02 BMW 530i '99 BMW Z3. Save Share. Like. T. TheOleBoy Discussion starterDiagnostic trouble code P0174 means system too lean bank 2. This means the powertrain control module (PCM) has detected lean conditions in bank 2 in the air-fuel ratio (AFR). Lean conditions mean there is too much air or too little fuel. Bank here means the location of the cylinder head in v-type engines. Check out this article, bank 1 and bank ...Causes of Code P0174. To throw a P0174 code, part of your engine is either letting in too much air or not pumping a large enough amount of fuel. In rare instances, the sensor could be faulty. However, a vacuum leak or problem with the fuel pump is the more common culprit. Any crack or leak in the vacuum system will allow excess air to flow into ...Oct 17, 2023 · Common symptoms for BMW fault codes P0171 and P0174 are a rough running or surging engine, an engine that can't hold idle, engine stalls out, and a lack of power. In extreme cases, the engine may not even run. How do I diagnose the cause of BMW fault code P0171/P0174 and fix it? Diagnostic trouble code (DTC) P0174 stands for “System Too Lean (Cylinder Bank 2).”. Your vehicle’s powertrain control module (PCM) will log this trouble code if it detects a lean running condition in …

1 2 3. BMW_tech. 2048 posts · Joined 2007. #2 · Feb 1, 2008. Sib 12 20 07. M54/M56: Mixture Too Lean - Fault Codes 2882/2883 are Stored in the DME. E46 with M54 from …

BMW takes pride in positioning itself as an elite luxury vehicle, except in the realm of electrics. The company has entered the electric car market with its i3 four-seater city car...PO171 and PO174 codes in a Ford vehicle indicate a lean condition in the engine's air-fuel mixture. This means that there is too much air and not enough fuel entering the combustion chamber. ... Introducing the Dark Side of the 1995 BMW 850CSi: Problems and Complaints Unveiling the untold tales of the legendary 1995 Read more. GMC Sierra 2500 ...The PO174 & PO171 go hand in hand. There is a lean fuel to air mixture. A disconnected vacuum line or if it has a hole in it. ... Check engine light on 2001 Z-3 Roadster BMW with codes P0171 and P0174. Bank 1 and Bank 2 are running too lean. Read full answer. Apr 02, 2011 • 2001 BMW Z3. 1 helpful. 1 answer.Bmw e60 5 series 2007 525i :code P0171 and P0174 = Fuel System Too Lean bank 1 and 2Caused check engine light on (service engine soon)I cleaned the Vanos se...2005 codes po174/po171 - Answered by a verified BMW Mechanic. We use cookies to give you the best possible experience on our website. ... 2001, 325i 2.5l auto, 228.229.227.226 bmw codes, po171,po174, set two time, bank one and b2. mass air reading 14hg/sec, somked the intake, ...Vehicle: !998 Ford F150 4.6L. p0171. p0174. commented Aug 27, 2017 by inspector (101 points) yes by not properly controlling egr due to and or venting vacuum ; all of this while engine running. can also cause ac to deflect to defrost vents in some older explorers / mountaineers.PO171 and PO174 codes - engine light turned on and then turned off - now it's back on Jump to Latest Follow 13K views 13 replies 6 participants last post by anthony s Dec 16, 2012As with many cars, the EML on a BMW is the engine management light. When the engine management light shows on a dashboard, it means the computers aboard the car have detected a pro...

Lost ga food stamp card.

87 movie theater movies.

Jul 31, 2021 ... Comments4 · HOW TO FIX P0171 & P0174 Codes + COMMON E46 VACUUM LEAKS · Misfire, lean codes: '04 BMW 6-cylinder · BMW E46 Misfire Rough...shanneba. 2557 posts · Joined 2008. #8 · Oct 11, 2010. Since you are only getting P0174 lean on bank 2 (cylinders 4-6) you could check the O2 sensor voltage with diagnostic software like a GT1/DIS Autoenginuity etc. There is an air distribution part on the top of the intake manifold.In this video, I solve the engine codes P0171 and P0174; which signify a lean condition on both banks of cylinders. The solution was replacing an o-ring.0:00...Hey guys, so I've got an E39 530iA with almost 100k miles and all of a sudden the SES light comes on. I pull my cheapo OBD scanner and see P0171 & P0174 come up. I erase it and go home. By the time I back it in the SES light comes on. I hook the car up to PA BMW SOFT and erase the codes. 500 miles later the SES light pops up with the same code.OBD2 Code P0174 Volvo definition: Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1. Note: This DTC is very similar to P0171 Volvo, and in fact your vehicle may show both codes at the ...i have a 2001 bmw 325i (e46)..... throwing codes po171 and po174 we reset tha codes but need to reset tha service engine light does anybody know how to... in this thread in this sub-forum in the entire ... E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Content on E46 Fanatics Forum is ...Diagnostic trouble code (DTC) P0153 stands for “O2 Sensor Circuit Slow Response (Bank 2, Sensor 1).”. This code points to a problem with the upstream O2 sensor on Bank 2, which is the bank opposite of where cylinder number 1 is located regardless of the make of the vehicle. Oxygen sensors issue high voltage signatures when they detect a ...Welcome to Mechanics News! In today's article, we'll dive into the common OBD-II trouble code, P0171, which affects Ford Rangers. This code indicates a lean. Mechanics news. ... Unlocking the Power of the PO174 Code: Toyota's Troubleshooting Guide . ... Demystifying the P1290 BMW Code: Unlocking the Secrets of Your Vehicle's Potential .I am getting codes po174, po102, po171, and po128 So I changed the MAF Bank 1 o2 DISA due to a loose butterfly just in - Answered by a verified BMW Mechanic. ... I have a 2003 BMW X5 3.0 with 143K miles. Fault codes indicate multiple misfires with fuel cut-off; always in bank 2 (cylinders 4, 5, or 6). ...So, I've had my wife's old X sitting for a while that I need to sell. But, it's had the SES light on for codes P0171 and P0174 (and short-term fuel trims in the 15-18% range) for a while that's been kind of tough to diagnose. ... The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this ... ….

The P0174 code is thrown when the bank two sensor one O2 sensor reports that your Impala's engine is running lean. Swap Test. If your Impala has P0174 without P0171 present, you can swap the bank one and two O2 sensors and see if the code "jumps" to the other bank. Here's what you do. Clear the diagnostic trouble codes with your scanner.On this video I show a good way to test a GDI system with lean codes!Po171 po174 code Lean bank 1 and bank 2 , and throttle actuator system fault. Check reason for lean codes 1st, vacuum leak(s), air inlet boot and hoses, or low fuel pressure / clogged filter.Hey guys, so I have these two codes come up which has caused my Service Engine Soon Light to come on (P0171 & P0174). To attempt to solve these codes, I tried the "MAF Test", which is unplugging the MAF sensor while the engine is running and if the car does not shut off then you need to clean/replace the MAF. In my situation, my car didn't shut ...Code po174 -300-463. 2001 Honda Passport. Asked by beckev in Greenville, IN on . January 27, 2010. I bought this truck knowing i had to replace the head,so i did.hte engin started fine.the cat on the pas side was cloged bad so i dumped out what looked like powder then knocked out the restof the stouf and put it back on.The truck seemed to run ...P0174 = "System Too Lean (Bank 2)" on a 2002 525i at high altitude (3,500 to 4,500') 2002 BMW 525i P0174 OBD-II trouble code compendium: P0174 = "System Too Lean (Bank 2)". Note: Some references indicate …One of the most common trouble codes with the Lincoln Navigator is P0174. It indicates that your Lincoln Navigator is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list of2006-2008 BMW X3 PO171| PO174 System Too Lean Bank 1 and Bank 2Common problem smoking and burning oil. Must remove intake manifold in order to reach crankcas... Po174 code bmw, The P0174 code is thrown when the bank two sensor one O2 sensor reports that your Frontier's engine is running lean. Swap Test. If your Frontier has P0174 without P0171 present, you can swap the bank one and two O2 sensors and see if the code "jumps" to the other bank. Here's what you do. Clear the diagnostic trouble codes with your ..., hi, i have a bmw 325 i 2002 ,i am getting these codes,po300,p1347,p1345,p1085,p1083,p0171,po174 i was told its a mass air flow sensor and the cost was $800.00 is there anyone who can help me save a li …, May 6, 2021 ... ... Code TOYOTA P0174 in the easiest, quickest, and cheapest way. 2 practical solutions to fix the TOYOTA P0174 error code. 2 simple DIY ..., 33 posts · Joined 2015. #1 · Jan 7, 2017. Last night I fond a new code to add to my code list on this BMW 530i. It was the po313 misfire with low fuel. I had the po174-171 code for about two weeks now. Have had the throttle body and manifold gaskets replaced. Check the rubber tubes from thee MAF Had a smoke test run and that built up a slite ..., 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 ... , Le code BMW P0174 indique que le PCM a détecté une condition de fonctionnement pauvre dans la rangée de cylindres 2. Cela implique également que le mélange air/carburant du moteur est incorrect, avec trop d'air et pas assez de carburant. P0174 : L'essentiel . Le code apparaît car la banque 2 contient trop d'air mais moins de carburant., DISA Rebuild Kit from German Auto Solutions for 3.0L only: https://amzn.to/2OLJy5hDISA Rebuild Kit from German Auto Solutions for 2.2L and 2.5L: https://amzn..., Diagnostic trouble code P0174 means system too lean bank 2. This means the powertrain control module (PCM) has detected lean conditions in bank 2 in the air-fuel ratio (AFR). Lean conditions mean there is too much air or too little fuel. Bank here means the location of the cylinder head in v-type engines. Check out this article, bank 1 and bank ..., The P0174 went away and was replaced by a P0171 indicating Lean Bank 1. I replaced that 02 sensor and the problem was resolved. H. hfount Discussion starter. 6 posts · Joined 2007. #7 · Jun 9, 2016. Thanks, It's what I'm thinking too. I have 130K on it and O2 sensors need to be replaced anyway., 2004 Lincoln ls V8 MAF cleaningusually these codes require a cleaning of the MASS AIR FLOW SENSOR, If the P0171 is combined with the P0174 code, it's very 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 air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced. ⚠ Check if your Chrysler have Safety Recalls., As you are not getting any trouble codes about the Pre-Cat O2 heaters, change the Pre-Cat O2's. Fuel System Status start in open loop (1). Tries to go to closed loop (2) but the pre-cats are dead so goes to status 8 = faulty pre-cats O2 sensors. Hot Idle. The log starts off in fuel status 1, open loop., To diagnose the P0174 Nissan 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., I have a 2002 bmw 325i my vehicle act like it want to shut off. engine light come on code was checked po174 bank 2 running lean., Here's a quick rundown of what you need to know if your vehicle has logged this OBD-II code. What Does the P0032 Code Mean? Diagnostic trouble code (DTC) P0032 code stands for "HO2S Heater Control Circuit High (Bank 1 Sensor 1)." Note that you won't get this code on most vehicles; it's only in the code list for a few., Code Tech Notes. If the P0171 is combined with the P0174 code, it's very 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 air flow meter. If the problem persistss the front oxygen (O2) sensor may need to be replaced., Location. SW FL. DTC: p2197 Ford says the cause may be an engine vacuum leak, possibly around the PCV valve or in the PCV vacuum plumbing. Such a leak may set the following DTC: P2197. The code may indicate a lean fuel condition or a lack of heated oxygen sensor (HEGO) switching. Ford says not to replace the oxygen sensor, MAF sensor or PCM ..., Step 7: Clear the Code and Test Drive. After addressing the potential causes, clear the P0174 code with your OBD-II scanner and take your BMW for a test drive to ensure the issue is resolved. Conclusion. Addressing the P0174 code in your BMW 5 Series requires a systematic approach to diagnose and fix the underlying issue., The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 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., Common Reason: Code P0174 is often related to a vacuum leak. Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean condition exists and code P0174 is triggered., However, after turning on the engine, a scan of current codes only revealed the P0174 - System Too Lean (Bank 2), with the module Fuel and Air Metering. I went ahead and cleared the SES light. It did not return immediately or anything after clearing it, but of course the vehicle was idling., Labor: 1.0. To diagnose the P0174 Mercedes-Benz 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., The light has since come back on and my scan tool says it's the same codes: P0171, P0174, P0313. Fuel mixture too lean, causing an occasional misfire. Yesterday, I gently cleaned the MAF using electrical contact cleaner (it didn't look dirty, but I cleaned it anyway with three cycles of spraying it then letting it dry)., Sorry I am learning what is needed. The codes from the OBD11 mean lean in bank one and two. The peake code comes up as 18AE and 18AF which are Air-Fuel Adaptation Cycle 1-4 adn 5-8. The temp is in F and the car is always warmed up running at least 20 minute before the SES light comes on., Description. 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., Tech Notes. The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 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 ..., 2001, 325i 2.5l auto, 228.229.227.226 bmw codes, po171,po174, set two time, bank one and b2. mass air reading 14hg/sec, somked the intake, no leaks,fuel pressure 53 psi, throdle body, at zero … read more, 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..., Golden Gate Chapter BMW CCA Nr 62319. One of the major issues with K & N filters, AFE, Airaid, and others is not too much air, but from the filters being over oiled. The oil contaminates the MAF insulating the wire or film. As air passes by it cools the the wire or film lowering resistance the DME senses the drop and adds fuel., RE PO171 & PO174 Codes . My Code Scanner Reads 229 Deg. When I Checked The Freeze Frame Data . Is That. ... I have a 2001 BMW 325i, I have 4 codes P1351, P1349, Po171 And PO174.The PO171 And PO174 I have changed MAF Sensor, Gas Filter And replaced the Valve cover and gasket,and the code comes back., The BMW had fault codes 227 and 228 stored (P0171, P0174) indicating a lean fuel system. This means the vehicle is running lean and the DME has tried to correct the condition but has reached it upper limit. Fault codes 227 and 228 are specific to a fault when the engine is at part throttle (not idle). This tells us that it's unlikely the lean ..., For example, after clearing the night before and then going for a 10-mile drive in the morning, here are the pending codes from yesterday: P0306,BMW 243, Cylinder 6 Misfire Detected. P1346,BMW 240, Misfire During Start Cylinder 3. P1343,BMW 238, Misfire Cylinder 1 with Fuel Cut-Off., A P1400 code is a manufacturer specific trouble code related to vehicles such as BMW, Chevrolet, Ford, Mitsubishi, and Nissan and refers to failure for the Emissions Reduction Control System when performing a cold start. The purpose of the catalytic converter or to perform properly, which is efficiently reducing emissions, it must be maintained ...