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  1. E90/E91/E92/E93 (2006 - 2013)
    Hey guys. I hope y’all are doing well. I recently changed the oil filter housing gasket, PCV Valve cover (and gasket), high pressure fuel pump (the new one didn’t fit the old one’s sensor, so I had to climp the adapter) lower radiator hose, and mass air flow sensor on my n55, and now my car...
  2. E90/E91/E92/E93 (2006 - 2013)
    06 325i has P0174 and misfiring codes on various cylinders.. car has 180,000 miles Car starts ok with RPM around 1100 and slows down to 600 after 30 seconds or so.. Can hear engine sputtering briefly.. Car drives ok at speeds < 50 mph but if I go uphill or need to accelerate beyond that, SES...
  3. E46 (1999 - 2006)
    Hey everyone, I've been creeping on the forums here for some time now, about 6 months (almost immediately after getting my car). I drive an e46 2005 330xi , about 260,000 km on it. Shortly after getting the car (around December), I had the CEL come on for lean conditions in both banks. I got...
  4. X3 E83 (2004 - 2010)
    Hey everyone, I’m very clearly new to these boards but as made evident by the title, I’m also a new BMW owner as well! Additionally, this is the first European car I’ve ever owned as well so a lot of firsts here. Now onto my questions: 1.) the manual says it requires 5W-40 full synth. I have...
  5. 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...
  6. E60 / E61 (2004 - 2010)
    For several Months, I have been getting intermittently the "check engine" light on my 2004 525i (M54 engine). I have a code reader/reset tool and I am getting two codes pop up between 3 days and about 3 weeks after resetting them. The codes as read on the reader are: * 2882 Fuel Trim, Bank 1 *...
  7. E46 (1999 - 2006)
    Hi guys, I've been lurking forever and have found much useful info here, but I'm battling an issue with high fuel consumption and after reading through 100s of fuel trim related posts I can't seem to find one that matches my condition. :eeps: Basically, my car is doing about 18-20l/100km in...
  8. 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...
  9. E46 (1999 - 2006)
    I recently bought a 2001 330ci and it had a check engine light on. Did a few things thinking that it would fix the problem. The codes were, Rich bank 1, Lean bank 2, Misfire cylinder 2&3 with fuel cut off. -Fuel filter -Spark plugs -Smoke test (They said there was no air leaks) -Had the...
  10. E46 (1999 - 2006)
    Hello All! Just recently started my '04 325ci with the M54 and under normal idle conditions it sounds like it is cammed... only.. its not. It has a slight lope to it and the only codes shown are the famous "System Lean Bank 1&2". I noticed the smaller vacuum hose on the F connector located on...
  11. 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...
  12. X5 E53 (1999 - 2006)
    Hello, I am new here and I took my 2006 BMW X5 4.4i (N62) to the dealership to get a diagnostic test done. They came back with the results "has lean run bank 2" The dealership says there is probably a vacuum leak and it needs a smoke test for them to find out where. We have problems with the...
  13. X5 E53 (1999 - 2006)
    I have a 2001 bmw x5 3.0i that has a check engine light on. When I check the code it says p2096 (bank one sensor 2 lean condition)...or something like that. I have done a lot of searching on the forums and cannot seem to find anything about this. So a little background info, The car runs...
  14. E46 (1999 - 2006)
    ok guys and girls, I need help..... I know this has been posted on numerous threads but, seeing how I cant narrow this down by myself and with the help of reading all the other threads, I figured I would start a new one. So excuse me if I get looked down upon for this. Here's the Car - 1999...
  15. 7 Series - E65 / E66 (2002 - 2008)
    hi everyone, i've been getting p2187 & p2189 code recently so the dealership i got it from just replaced the pcv valve, air intake manifold gasket and cleaned up the throttle body. Check engine light went awayand car is running perfect. prior to that, the car idled really rough and would...
  16. E46 (1999 - 2006)
    I checked the MAF sensor and it wasn't that, there is no sign of hesitation or real power loss, I also checked the hoses and there weren't any visible signs of damage, what's the next step?
  17. E39 (1997 - 2003)
    I don't see the fuel line Schrader valve anywhere on the Realoem diagrams. I'm sure I'm missing something obvious ... and I've asked in some of the lean-misfire threads ... but no answer yet ... So I figured I'd ask outright in its own thread: Q: Where is the M54 fuel system Schrader valve...
  18. E60 / E61 (2004 - 2010)
    I have a 2004 545i with a the V8 engine My check engine light is on and the code is saying " Lean at Idle" I have noticed that when i come to a stop after a little hard driving, the car will run rough then the light will come on. Any ideas on what could cause this. I have 110k on the car...
  19. E39 (1997 - 2003)
    So last weekend I overhauled the cooling system. It went smoothly with the help of the posts on this forum. After bleeding the system, I drove the car a couple hours to make sure everything was OK and everything was. Temp was good. Coolant level was good. Car running perfect like before. Today...
  20. 7 Series - E65 / E66 (2002 - 2008)
    Help!!! My 2002 745 LI has been at the dealer for 6 months! He does not know how to solve lean mix code. Service done to date. New MAF New PCV Smoke Test All seals orings that leaked have been replaced Re-smoke tested New Battery 2 New O2 sensors (pre converter) Still getting P2179 and P2177...
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