Inspected the typical intake boot for leaks - none. ajguk. Jun 12, 2007 · Check for any vacuum lines being dislodged. If the P0171 is set in along with the P0174 code, it is highly likely that the problem is caused by an intake leak. N52 Engine. Nov 20, 2018 · The most common causes of P0171 are a bad Oxygen sensor, a vacuum leak, or a dirty MAF sensor. Possible causes may include: incorrect air filter, unmetered air or a defective air mass meter. This is a generic ODB code so you’ll get a lot of hits for other cars when you search. For the past week or two I have been having problems with the way my car has been driving. Swap Test. BMW N53. 2011 bmw 328i xdrive complete tour2011 bmw 328i xdrive p052b Bmw 328i xdriveBmw p0015 code e90 e91 e92 e93 b camshaft position timing over retarded. Mar 17, 2023 · The P0171 code indicates that the oxygen (O2) sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is too lean to be corrected. Jul 10, 2021 · By Vlad Samarin, Updated: July 10, 2021. Jul 17, 2017 · Hi, I'm currently experiencing a problem with the Valvetronic system on my BMW with N52 engine and it would be great if I could get some advice. The MAF is the least likely and most expensive. Links to Smoke Machine Builds:https://youtu. Replace with genuine or Siemens only. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses Feb 19, 2024 · Bmw p0171 code x5 p0174 x3 e90 engine e87 e92 e83 z4 n52 e91 causes. If there are no intake leaks, the next step is to replace the air filter and clean the Mass Air Flow Jan 10, 2015 · according to e90post, who got it from another forum, "P112F - Manifold Absolute Pressure to Throttle Angle - Too High (Bank 1) The fault is recognized when the relationship between the indicated intake manifold pressure and the mass airflow calculated based on throttle-valve angle is not correct". Interestingly, the N51 is near-identical to the N52, powering the same cars and available during the same […] Jun 18, 2023 · What causes code p0171 p0174 on bmw n52 n53 engine e90 e91 e92 e83 e81Trouble code p0171/p0174 07 bmw 328i maf sensor cleaning p0171 p0174Bmw most common vacuum leaks p0171 & p0174 fault codes explained. If your MAF Sensor reading is too low for the indicated RPM at idle, but goes up by nearly the appropriate amount at 2,000 RPM, then your MAF Sensor is likely OK and you have a vacuum leak. Apr 16, 2016 · I have a 2007 X3 3. codes are p0012, p0015. The N52 replaced the BMW M54 and debuted on the E90 3 Series and E63 6 Series . The N52 was the first water-cooled engine to use magnesium/aluminium composite construction in the engine block. Change the plugs already and ruled out the coil packs. Dec 29, 2018 · It is also one of the most common codes. Long time lurker in the forums, so over the weekend the service engine light came on, I ran the scan and got the P0171 and as far as I know it could be several different things, but from searching the forums I started to Nov 30, 2020 · Positive fuel trims are common (as in universal) with e46s at around 125-150k. can't fix p1415,p0171 & p0174 help. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Fusion’s engine is running lean. Oct 21, 2020 · =====Claim your FREE engine code eraser 👉 https://free. Here is my problem !! Idle get's rough reaching the 600rpms Jan 27, 2024 · In the context of Popular Mechanics Magazine, the code P0171 “system too lean” in Nissan vehicles indicates a lack of fuel in the air-fuel mixture, potentially caused by issues such as a vacuum leak, faulty oxygen sensor, or clogged fuel injectors. Hello fellow bmw owners, My n52b30 has some rough idle on cold start and on operation temp. I did my valve cover also(N52 non-turbo) and the Bapmic aftermarket one was fine but like the original, uses easily stripped screwholes on either side of that gasket. Dirty injector = less fuel = misfire = too rich basically. Bad fuel economy. Location: Tucson, AZ. Appreciate 0. The CEL came back up 50 miles after i left the garage. Runs better but now getting only code p1415. When the P0171/P0174 code sets, the oxygen sensors are detecting too little oxygen in the exhaust and the control module is adding more fuel than normal to sustain the proper air/fuel mixture. PROCEDURE. Bmw code p0015 P0306 328i coil misfire Bmw p0171 code. P0171 is a generic code, meaning it has the same definition for the Mazda CX-5 as any other vehicle. stanleyp. The BMW P0171 code indicates that the engine is running with a lean fuel mixture, meaning there is too much air and not enough fuel in the engine. Over the long term, positive trims can contaminate the cats. I replaced the Air Mass Sensor & st … read more Jul 10, 2018 · Oxygen Sensor. The vehicle’s PCM will add more fuel to the mixture to bring the air-fuel mixture where it needs to be for optimal combustion. This means positive trims above 3%, not just the ones that trigger P0171/P0174 codes. This problem has been there for some time. I replaced the Air Mass Sensor & still have the problem. Jul 31, 2023 · The N52 succeeded the highly-successful M54 and powered multiple BMW cars between 2004 and 2015. Gasoline contains detergent to prevent dirty fuel injectors. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Encore’s engine is running lean. P0171 is a diagnostic trouble code that needs to be addressed promptly to ensure proper Jul 13, 2018 · P0171 Definition: Fuel Trim System Lean Bank 1. 7 parts air to one part fuel). 80). Lean bank 1, bank 2, MAF insufficient air intake. It drives normally once you start moving, but goes back to the rough idle and whining noise once you stop. bmw code 30c1 | Katalogambar. P0073 bmwHow to fix p0171 code Bmw 328i thermostatBmw e90 p0171 p0174 bank. to/2kd26ARBMW Goodies: https:/ Sep 24, 2011 · T. The Powertrain Control Module ( PCM) detects the oxygen content in the exhaust gas from the Air/Fuel Ratio (A/F) Sensor (Sensor 1) signal voltage, and it uses fuel feedback control to maintain the optimal air/fuel ratio. 2] Repair instruction Check fuel delivery pressure (N51,N52 ,N52K ) 13 31 029 | REP-REP-RAE6313N52-1331029 - V. The car was drivable, so I cleared and re-read the codes for 2 or 3 days. I cleared the codes and they keep re-appearing. So UNLESS you look at the FF Data ("Snapshot") and ECTS or Engine Temp (one of the Parameters saved in FF Data) at the moment the P0420/30 WHERE IS BANK 1 BANK 2 ON BMW N51 N52 N53 N54 N55 ENGINE E90 E60 X3 X5 E83 E70 E82 E65 E63 E64 F25If you have BMW with 6 cylinder engine and you need to fin Apr 20, 2017 · P0172 Bank 1 rich. Note that on BMW vehicles, the PCM is known as the DME Dec 28, 2020 · OXYGEN SENSOR REPLACEMENT LOCATION BMW N52 N53 N54 N55 ENGINEIf you have BMW with 6 cylinder engine and you need to replace upstream oxygen sensor on BMW wit Apr 7, 2015 · 119. This will HELP, but won’t do it completely. Dirty fuel injectors should not cause a lean reading but could cause a rich reading. When I look at fuel trim data I notice the following: When the car is accelerating the long term fuel trim on bank 1 stays around -10% and the long term fuel trim on bank 2 stays around -8%. This fixed the vacuum leak noise and "supposedly" it was fixed after in this video i show you how to diagnois a p0172 system too rich bank engine code on a e90 bmw. Jun 18, 2013 · Threw the codes mentioned in the title. Jul 31, 2018 · Oxygen Sensor. The O2 sensors have the ability to correct a fuel mixture of +-15%. First remove the T30 bolts, then remove the bottom torx, followed by the top two torx. Check engine light on. iTrader: ( 0) P0171 Code of Death ! : (. It also throws the code P0171 to let you know it has done this. bmwoem1. As a result, the fuel mixture will become too lean, which will be detected by the ECM, and then the P0174 code will pop up. Common Causes. The P0171 trouble code in a Honda Accord indicates a lean condition in the engine. Quote. My check engine light came on so I went and had my codes read at O'Reilly's yesterday. Check Details. System Too Lean. Part was bmw ordered from fcpeuro. These are called “lean” because they are adding fuel to a mixture that has too little fuel. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Camry’s engine is running lean. That results in LEAN mixture on BOTH banks (P0171 & P0174). The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Focus’s engine is running lean. i was able to use a carefully sized drill to enlarge the hole (without penetrating the cover!!) and use a larger than factory fastener to secure that gasket. P0171/P0174 Diagnostic Theory for Shops and Technicians. Apr 26, 2022 · This sensor measures the volume of air that is entering the cylinder of your car. My car was at the dealer 2 months ago for a CEL. nonda. 25)或P0172—混合氣過濃(此時長期燃油調整值小於0. 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. This code is triggered by the first downstream (front) O2 sensor. 2 13 31 029 Check fuel delivery pressure (N51,N52 ,N52K ) image Special tools required: 13 5 220 13 5 221 13 5 222 11 4 310 Important! On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The most common causes of P0171 are a bad Oxygen sensor, a vacuum leak, or a dirty MAF sensor. I simply replace both if one goes. Symptoms include odd idle, odd rpm flux. I placed an order for this below just this week: 2xBMW Camshaft Position Sensor - VDO 13627525014 $180. While it became one of the most reliable and popular inline-six engines BMW ever made, it had a lesser-known sibling called the N51. Only the filter with the P/N 13 72 1 744 869 must be fitted. Check the back of the engine at the firewall. I have a 2008 335i. The “classic” cause of this is a bad O2 sensor, bad MAF sensor, or a vacuum leak. . I was getting the lean codes on my obd2 scanner so I unplugged the MAS and that smoothed things out. [1] It was also listed as one of Ward's 10 Timing issues with e90 n52 after valve cover replacement? I recently ran into an issue with the dreaded fix for my 2011 328i and my PCV valve was shot. The BMW P1017 code is a diagnostic trouble code (DTC) that indicates a problem with the Valvetronic Eccentric Shaft Sensor Plausibility. The BMW N52 is a naturally aspirated straight-6 petrol engine which was produced from 2004 to 2015. The P0171 is one of the more common trouble codes. If necessary, clean or replace these components to rectify the problem. P0171 indicates that your Ford F150 is either getting too much air or not enough fuel. Also replaced all rings on the injectors, and new pre's and post's o2 sensors (Bosch). Removed and reinstalled the intake boot several times, changed the plugs (they were due) and the air filter. Symptom is Code triggered at highway speeds, not at idle. 0 engine about 110k miles. P0171 is a generic code, meaning it has the same definition for the Chevy Trailblazer as any other vehicle. So I've removed the Valve cover to inspect Valvetronic system. 9 posts · Joined 2013. Sep 5, 2020 · Tips to diagnose vacuum leaks in your BMW. Check Details Nov 13, 2022 · Also, I would suspect the valvetronic motor gasket. I have a n52 motor with incorporated ccv, and recently replaced the entire valve cover. Drives: 2011 E92 M3 ZCP. #1 · Sep 24, 2011. Apr 11, 2014 · BMW X3 2007 3. My check engine light came on today with these codes P0174 & P0171. Fired her up, and she runs great. Besides the MAF sensor being faulty, this issue could also be caused if Mar 29, 2017 · Help 2007 x3 n52 code p0171-p0174 Jump to Latest Follow 2K views 3 replies 2 participants last post by kilo6969 Apr 3, 2017 N52 idle problem. View Profile View Forum Posts Member Sep 10, 2016 · #BMW #E46 #HansGarageCommon fault codes for BMWs. Jul 17, 2023 · P0015 p0014 vanos solenoid intake e90 adviseN53 p0174 e90 n52 p0171 causes engine Bmw 328i p0306 misfire code repair / bmw shaking fix replace coil pack2008 bmw 328xi p0012. Nov 11, 2018 · Oxygen Sensor. The car started to idle really rough and had a high pitch whining sound at idle. 88 Jul 23, 2018 · Start by taking a look at the vacuum lines and seeing if you have a leak. I kept getting different codes, P1083, p1084, P1347, P1348, etc. MikeInNH June 12, 2007, 5:56pm 4. Jun 1, 2015 · I'll double check with him tomorrow and get back to you, thanks for your help so far though appreciate it! It was a blue cable that seemed to link to the battery as far as I know when he showed it to me. The SES light came on and it had the P0012 and P0015 codes at 108k miles. Also replaced both vanos solenoids from bmw. bank one2008 bmw 328xi p0012. Posts. Fuel Trim System. Dec 29, 2018 · Fuel Injectors. P0171 indicates that your Hummer H3 is either getting too much air or not enough fuel. So far, I've bench tested the Valvetronic motor and put DC current from a battery to it and the motor seems to be working as it should. You may have a couple of wires caught between the the valve cover gasket and the head. Once untightened, it will spring out an inch or so. The code is thrown when the oxygen sensors detect the air-fuel mixture is “lean” (too much air or not enough fuel). If it is malfunctioning, it can cause a false P0171 code. #7 · Oct 18, 2013. The ideal air/fuel ratio is 14. Feb 1, 2008 · The fault codes "2882/2883 - fuel trim, mixture too lean" are stored in the DME. May 13, 2017 · MAF sensor. My apologies for a long post, but a BMW newbie that needs some help. View Full Version : 328i E90 N52 Rough Iddle, ShutOff and P0171 - P0174. Join Date: May 2014. Nov 30, 2023 · In conclusion, BMW code P0171 and P0174 are common fuel trim system lean bank 1 and bank 2 codes that require immediate attention. I have been getting misfire codes and system too lean on both banks (p0171, p0174) codes. 15) Valtronic removal. BMW X3 2007 3. If it needs to be corrected more than that, the P0171 code will be stored. You may see a cylinder misfire code or fuel injector-specific code with P0171. teklord69 Discussion starter. Show Printable Version; Today, 02:41 PM #1. 0SI N52 engine w/170k miles. P0171 indicates that your Toyota Rav4 is either getting too much air or not enough fuel. The code is caused by the O2 sensor detecting too much oxygen in the exhaust gas vs what should be there based on how much air and fuel went in (according to its sensors). How to diagnose and figure out the exact problem. Hello. These codes indicate that the engine is receiving too much air or not enough fuel, resulting in a lean air/fuel mixture. 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. When the belt shreds off, parts of it almost always get wrapped behind the crankshaft pulley and damage the front crankshaft radial seal. 693 posts · Joined 2013. Oct 12, 2018 · P0171 Definition: Fuel Trim System Lean Bank 1. 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. 02-25-2013, 03:43 PM. The check engine light come on after city driving and then goes away after some highway driving. Took it out and cleaned it up seemed to run better but got worse. P0171 is a generic code, meaning it has the same definition for the Chevy Traverse as any other vehicle. Jan 3, 2024 · P0171 and P0174 are diagnostic trouble codes for lean condition in bank 1 and bank 2, respectively. Nov 11, 2018 · System Lean. bank one. Additionally, check the fuel injectors and oxygen sensors for proper functioning. What causes code p0171 p0174 on bmw n52 n53 engine e90 e91 e92 e83 e81 . (T30, Torx?) 16) Remove the approximately 20 torx bolts, and three center 10mm bolts. 其有效值為0. The air/fuel ratio coefficient for correcting the amount of injected fuel is the short-term . to/33r29wkBMW Smoke Machine (eBay): http://ebay. Thread: E89 Z4 - P0171 and P0174 codes on N52 engine. Nov 29, 2020 · BMW Smoke Machine (Amazon): https://amzn. The codes were: P0420 Catalyst System Efficiency Below Threshold (Bank 1) P0430 Catalyst System Efficiency Below Threshold (Bank 2) The guy at O'Reilly's told me it had Jun 2, 2023 · Bmw p0171 code p0174 x5 x3 e90 engine e87 e92 n52 causes Vw code p0171 p119a p0300 2. May 23, 2023 · The onboard computer is receiving information that the Air/Fuel ratio on Bank 1 of the engine is faulty. Thread Tools. Mar 14, 2013 · 2007-2010 X3 N52 Valve Cover Replacement DIY. BMW CODE P0420 P0430 CATALYTIC CONVERTER SERVICE ENGINE LIGHTIf you have BMW that has engine light and any of the code P0420 or code P0430 in this video we w Oct 12, 2018 · Fuel Injectors. 將短期燃油調整值進行平均化處理的數值_就稱為長期燃油調整值(Long Term Fuel Trim). I ordered a duralast replacement from autozone and installed it last night. P0171 is a generic code, meaning it has the same definition for the Toyota Highlander as any other vehicle. Jul 16, 2010 · When these adjustments become too large, a fault code is set. co 👈==== How to Fix P0174 =====Engine Code P0174 Saving Repair If one sees P0420 as a Fault Code saved in DME Memory, but the SES light is OFF, one would expect to see the Fault Detail that says "Fehler momentan nicht (NOT) vorhanden" = "Fault NOT currently present". To make sure your upstream O2 sensor is bad, check the voltage chart on your bank 1 upstream sensor (using the “Live Data” function in your scan tool). Dirty MAF sensor, vacuum leak, O2 sensor. I have a 2008 BMW 328 XI sedan. A combination between P0171 and faulty oxygen sensor codes (P0130 to P0135) or in some rare cases, P0300 appears. 0l "most common problem" P0011 fault What causes code p0171 p0174 on bmw n52 n53 engine e90 e91 e92 e83 e 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. Jan 19, 2019 · BMW E90 secondary air pump fuse location and replacement E91 E92 E93 BMW 325i 328i 330i 335i 316d 318d 320d 325d 330d 335d 316i 318i 320i 323i 325xi 328xi 33 Mar 25, 2017 · P0171 and P0174 Gas mileage terrible Long Term Fuel trims around 24% Short Term fuel Trims around 27% at idle but at 3-5% above 1500 rpm Things already checked/performed: - Tested Fuel Pressure - 72 PSI, right where it needs to be - Smoke Test, found leaking VCG - replaced VCG (now that was a project), Performed smoke again and no leaks at all. i smoked the engine and i found the vacum leak, that is what Sep 11, 2023 · 2008 bmw 328xi p0012 N53 p0174 e90 n52 p0171 causes engine P0012 bmw p0015 code sensor 2006 471f 84c2. Here are the codes that i read with INPA: The cats are deleted and the DME was coded. This causes an air leak in the crankcase system which will cause the lean mixture faults. 80~1. 07 bmw 328i MAF sensor cleaning p0171 p0174 - YouTube. It means that the air-fuel mixture in the engine is imbalanced, with too much air and insufficient fuel. website. May 19, 2024 · X5 p0012 n52 camshaft e90 e9207 bmw 328i maf sensor cleaning p0171 p0174 How to fix 2007 bmw 328i p0073 code (ambient air temp sensor) fix. Nov 26, 2010 · P0171, P0174 - system too lean, bank 1 and bank 2. P0171: Fuel Trim System Lean (Bank 1). Carefully used MAF cleaner on the MAF meter. Dec 15, 2017 · Rough idle engine cuts out n52 p1415. 0 hour of labor. Addressing these codes promptly is crucial to prevent Apr 5, 2019 · in this video I will show you 8 common misfire and rough running problems the n52 engine suffers from and majority are not expensive fixes but can become exp Dec 19, 2016 · 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 Jul 9, 2012 · B. The potential causes include a vacuum leak, faulty oxygen sensor, clogged fuel injectors, or a malfunctioning mass airflow Oct 12, 2018 · Oxygen Sensor. A while ago my CEL came on and I scanned it is P0171 & P0174 or 2A2E & 2A2F since it would only happen when its super cold out so i did some research narrowed it down to the Vapor Canister Purge Valve so i bought a new one and changed it. How to fix 2007 BMW 328i P0073 Code (ambient Air Temp Sensor) FIX. Sep 7, 2018 · Oxygen Sensor. I took it to the dealer and they weren't sure what it was but that it might be crankcase valve and to come back when the car is completely messed up. Nov 18, 2017 · smk23 Discussion starter. CAUSE. Basically codes were pointing to cylinder misfires, cylinder cut-offs, and running lean. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Altima’s engine is running lean. I have a diagnostic tool to look at a number of parameters. The sensor on or right after the exhaust manifold is typically the sensor that reports the lean condition. Codes are P0012 Jan 27, 2024 · The P0171 code on a Nissan Sentra indicates a too lean air-fuel mixture. I have been struggling diagnosing a P0172 code that keeps coming up. The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. Aug 14, 2023 · Code P0171 Honda Description. 25_當超出這一范圍時_故障指示燈就會點亮_並存儲故障碼:P0171—混合氣過稀(此時長期燃油調整值大於1. Codes P0171 and P0174. 1053 posts · Joined 2010. Understanding the BMW P1017 Code. TIMING MARKS ON BMW 320i 328i 420i 428i F30 F31 F32 F33 F36 - YouTube. It is common for most auto repair shops to charge between $75 and $150 per hour. Aug 21, 2022 · Tech Notes. George. Nov 20, 2018 · It is also one of the most common codes. 7:1 (14. Had a buddy (ex pro mechanic) look it over closely, read the codes and clear the codes. 2008 Bmw 328xi p0012. be/crc6CJ_ni2whttps:/ Feb 26, 2014 · I have a 2006 525I N52 3. What are the causes of the BMW P0171 code? The causes of the BMW P0171 code can include a faulty oxygen sensor, a vacuum leak, a clogged fuel filter, a malfunctioning fuel pump, or a faulty mass Sep 7, 2018 · Fuel Injectors. Remove and inspect the air filter element. Mar 3, 2024 · Bmw code p0015 Bmw n52 engine e92 328i noise rattle I have a 2008 bmw 328 xi sedan. 0si N52 with 111k miles on it. #1 · Aug 9, 2013. us/NA16ejRare BMW Parts: https://ebay. To diagnose and fix this issue, you can start by inspecting the air intake system for any vacuum leaks or clogged filters. It included gasket/bolts/motor seal/sensor seal. Feb 25, 2020 · N54 Codes P0300, P0301, P0302, P0303. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Tacoma’s engine is running lean. Symptoms. Oct 12, 2018 · Oxygen Sensor. Definition. After I bought it, I replaced the low pressure fuel sensor as I had the check engine light on (don***8217;t remember the code). Bmw p0015 engine 328xiCamshaft timing actuator retarded p0015 p0012 I have a 2008 bmw 328 xi sedan. iTrader: ( 0) Codes P0171 & P0174. Jul 15, 2018 · P0171 Definition: Fuel Trim System Lean Bank 1. This code is typically found in BMW vehicles and can be triggered by a variety of issues, including a faulty sensor, damaged wiring, or a malfunctioning Valvetronic motor. Upon becoming faulty, it might let too much air into the cylinder. As quick intro, I recently picked up a 2008 E60 535xi w/ N54 with 83K miles on it. Check engine light, decreased fuel economy, misfire, hard to find idle. There are two of them identical that will go bad (intake and exhaust side). Nov 11, 2018 · It is also one of the most common codes. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Silverado’s engine is running lean. Nov 20, 2018 · P0171 Definition: Fuel Trim System Lean Bank 1. Throwing codes P0171 (lean Bank 1) P0172 (Lean bank 2), P01415 (secondary air) this X3 doesn't have an air pump, & B2aaa. These codes indicate a potential issue with the engine’s fuel delivery system, which can lead to poor fuel efficiency, reduced power, and increased emissions. A clogged or damaged fuel injector will cause the air-fuel mixture to lean out in one specific cylinder. This imbalance can lead to poor engine performance CHECK FUEL DELIVERY PRESSURE (N51,N52 ,N52K) [REP-REP-RAE6313N52-1331029 - V. Apr 16, 2014 · The camshaft position sensors are known to go bad on N52 with high mileage. Jun 14, 2020 · To diagnose the P0174 BMW code, it typically requires 1. It was wining really bad and after searching for a solution online, and talking to mechanics, I had the valve cover replaced. kk bk mm ks ur tb nf ew gr sr