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p0171
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  1. General BMW Questions
    Replaced the thermostat and the water pump recently (e46), and changed out the coolant (which if it helps any, my car did not take alot of new coolant only about a gallon, despite me draining it as best I could, but the car isn't over heating and the temp gage stays steady in the middle, maybe...
  2. E46 (1999 - 2006)
    Last week I took my 04 325i (auto, M54 2.5l - 218,000 miles) to a local euro shop (with nothing but great reviews of course) and addressed a vacuum leak I had which would throw P0171. That leak was the hose connecting to the fuel filter. The reason I took it to the mechanic is due to a power...
  3. E46 (1999 - 2006)
    Ok so owner of 98 318i and now a 01 325xi ..Xi codes p0171 74, misfires. Changes plugs and coils.... it stutters,, cut off once ... cold start I am nervous to drive til warm because of cut off....could it be fuel pump or something more major , are the vacuum hoses hard to change?and visibly no...
  4. F10 / F11 (2011 - 2016)
    Hello Everyone, I have a 2013 BMW 528i xdrive and it has been good so far! Recently I have observed several issues as of recent. Firstly, it started to have a small oil leak (coming from the oil drain plug, which I checked by going under the car) and blue smoke that would disappear soon after...
  5. E46 (1999 - 2006)
    I noticed my 2001 325i with 150k miles was misfiring. The previous owner told me the spark plugs and coil packs had only been replaced once in 75k miles so I decided I'd replace all 6 of the spark plugs and coil packs, but that did not fix the misfire. So I decided to get an OBDII reader and see...
  6. X3 E83 (2004 - 2010)
    2006 BMW X3 3.0 Throwing codes p0171 and p0174 band 1 and 2 are too lean. I ran live diagnostics on the car while driving. The O2 Bank 1 and 2 sensors short term fuel trim is showing at a constant 92%. The data also says the fuel system is maintaining an open loop on system b. Why wouldn't the...
  7. E90/E91/E92/E93 (2006 - 2013)
    This is my first post here. Not sure if this is the place to do it. I'm a Honda/Acura nut and have owned many. I'm a big DIY'er and have swapped just about everything out (engines, trannies, etc.) on my rice rockets. This is my first venture into German engineering. I'm a new owner of a...
  8. F10 / F11 (2011 - 2016)
    My check engine light came on this past weekend. I went to AutoZone to read the code. It was P0171 - Bank 1 - running too lean. Autozone recommends cleaning the MAF. But, they could not tell me where the MAF is or how to clean it. Is the MAF easily accessible? I'm not much of a DIY but I am...
  9. E46 (1999 - 2006)
    Hey guys, First post! I was hoping that I can just find some answers lurking on different forums, but seems to me that my specific problem wasn't shared by anyone else. So here it is...My SES light was one a few months ago when it was really cold, my car died after backing out of a parking...
  10. E46 (1999 - 2006)
    Alright, I've put in hours of research on different causes of the Lean codes (P0171/P0174) and the engine not running 100%. I've also done troubleshooting for most of it, and now I hope to present all the clues that I've found to someone who has spent a lot of time with E46s and who might be...
  11. E46 (1999 - 2006)
    Hi everyone, First of all I am a newbie to these forums and I want to thank you all in advanced for any help I receive. I have a 2003 330CI and I am getting lean codes and have a slight misfire. I have a full scanner that gives me all of the bmw codes but the only ones present are P0171 and...
  12. E60 / E61 (2004 - 2010)
    I'm in a 2004 530 which has the M54 engine. I've got about 120k miles on it. I only put 93 in it, but occasionally from Quiktrip when I'm around one. I recently started experiencing some roughness in the idle for about a week and a couple of days ago, the check engine light came on. I pulled...
  13. X3 E83 (2004 - 2010)
    Hi and thanks already to the many users who post such helpful info on these forums! I bought my '06 X3 3.0 M-Sport, auto trans, about 6 months ago with 95K on the odometer. Alpine White w/Terra Cotta leather. LOVE. IT. Purchased a Royal 48/50K service plan at the same time, so I should only...
  14. E46 (1999 - 2006)
    I have a 2004 E46 325CI with the M54 engine in it. A few weeks ago, my check engine light came on. I didn't think much of it as I was getting on the throttle pretty good getting onto the interstate (figured it was just a retarded O2 sensor due to my lead foot). Took it to the shop to get the...
  15. E46 (1999 - 2006)
    I have been chasing my Lean Codes (P0171 & P0174) for so many years; it is not even funny. I did many things but never found the cause. There were a few things I never tried. One was the MAF sensor. There is no reliable way to test it if it is really defective or not. It is an expensive item...
  16. E46 (1999 - 2006)
    I had mycodes scanned and came to the conclusion to replace spark plugs, new maf sensor, new intake cps, and cleaned the disa valve. Its running worse now and I have coes: p1345, p1353, p1349, p0313, p0300, p0102, p0340, p0171. So alot of misfire. And still have the same code for the intake cps...
  17. E60 / E61 (2004 - 2010)
    Hi guys, I've got a 2008 535i that has a rough idle, hesitation, a rattling sound and throws some engine codes. P0171, P0301, P0302, P0303, P0300. After some research on this forum and 5Series, I'm thinking it is this DISA valve. I don't have confidence that I could get this done right in the...
  18. E46 (1999 - 2006)
    I have a 2002 325xi with 120K miles. I purchased it at 100K miles. Here is the work that we have done on the car so far: Replace fuel filter Replace Spark Plugs Replace value cover and gasket Replace pulleys Replace Radiator hose Replace Secondary hose Replace 4 oxygen sensors Replace CCV...
  19. X5 E53 (1999 - 2006)
    So I have a 2002 X5, it's a 3.0 litre (M54) I bought it for my wife a while ago. To make a long story short the MIL light (malfunction indicator light, service engine soon) was on when I bought it. I have worked on cars before, quite a bit, but never a Beemer, so I bought service manual...
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