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p0174

  1. Hesitation between 2500-3000 RPM in Upper Gears - Manual

    General E46 Forum
    I have been trying to diagnose and remedy this problem for several months, and now I need the to call on the collective knowledge of the group. It all began when SES illuminated one morning as I was on my way to dealer for routine maintenance. The car was behaving normally on the roughly one...
  2. Stupid P0171 and P0174 Lean Codes

    General E46 Forum
    Hey everybody, I recently picked up a 2004 325i and I'm looking for some advice with the infamous P0171 and P0174 lean codes. I've tried a few super easy and cheap things that I figured would be a good place to start before spending large amounts of money on parts. Some background on the car: it...
  3. P0102 followed closely after by P0171 & P0174

    General E46 Forum
    Hey guys, I searched the forums already and saw some issues similar to mine but nothing 100% similar. About 4 days ago, I got a P0102 code. I decided to grab some MAF cleaner and hit my MAF up a little bit and clear my code too see if that fixed it. So no biggie there. Following this, about a...
  4. P0171 and P0174 Help

    General E46 Forum
    Hi. I have a 2000 bmw 320i with 213k kilometers. It has the M54B22 engnine. My car threw P0171 and P0174 along with codes for camshaft position sensor. So i fixed the camshaft position sensor and decided to try and tackle the P0171 and P0174. I found out that the CCV system was broken so i fixed...
  5. Ok I'm running out of ideas - Lean codes

    General E46 Forum
    P0174 - System Too Lean Bank 2 P0171 - System Too Lean Bank 1 P0313 - Misfire Detected With Low Fuel P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) I thought it was a vaccum leak and a BMW/German auto shop do a full replace of the vanos line and the...
  6. Another Persistent P0171 and P0174 Situation

    General E46 Forum
    Long time lurker, first time poster. Sorry for the long post, but I can't seem to eliminate the lean codes and misfires at low RPMs. I'm a mechanic, but generally work on classic cars from the '60s through '90s, though I'm no stranger to modern cars. This, however, is my first BMW...
  7. E46 Excessive crank case pressure

    Forced Induction Forum
    Welcome. Thank you for looking at this post! I will give a short topic point to help any one who may have quick and easy information, then I will proceed to post detailed information about my E46. --2001 330CI 3.0L __NEW PARTS__ -valve cover gaskets full set felt pro -rebuilt the VANOS -fuel...
  8. P1347, P1345, P1343, P0174 & Injector Issues

    General E46 Forum
    PROBLEM A I won't be able to start the car up until I get a replacement starter. Before that exploded on me, I was getting the following codes. The car would also shake at idle and low-rpm power was awful. Here's what my Autel MD-802 gave me. Codes were in this order: P1347: Misfire cylinder...
  9. P0171 & P0174 and now P0133

    General E46 Forum
    jfoj: 2004 330 ci, ~174,000 miles, all stock equipment First let me say thanks to you for all of the posts/replies you have made that have helped me and many, many others. Thanks to you, I have made great strides in learning about this car, which is really my son's, but I enjoy working on it...
  10. Lean and rich at the same, vacuum leak

    General E46 Forum
    I have an intermittent check engine light with P0174 (Bank 2 system too lean) and P0172 (Bank 1 system too rich). I just replaced the cylinder head, and a lot of the vacuum lines were old so I replaced everything that I saw. The CCV is new. All gaskets were replaced. There is one line, however...
  11. Help with P0174 and freeze frame

    General E46 Forum
    So a few weeks ago I got a CEL with a P0174 code and a code for bank 2 pre cat o2 sensor. I replaced both bank 1 and 2 pre cat sensors. Cleared the codes then a few days later got the P0174 code again. Last weekend I cleaned the MAF and quickly checked the upper intake boot for rips and didn't...
  12. Lean Condition and mess with fuel trims

    General E46 Forum
    Lean Condition , misfiring followed with low cat efficiency added on top to that. To all who can contribute any solution to the posted condition, I appreciate. Intro: I have read and scrolled through multiple threads related to similar issues and found that despite the issues might be similar...
  13. Rough idle with random rev

    General E46 Forum
    Hey guys, First post! I was hoping that I can just find some answers lurking, 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 spot and driving in 1st...
  14. cheesy sludge in oil cap- codes p0174 p0505

    General E46 Forum
    Cheesy looking sludge in oil cap {HELP} My 04 bmws 325xi has been sitting for about a year. We just replaced the starter, fuel pump, disa valve, cleaned the iac, and changed breaks, rotors, and front suspension and control arm. Just changed the oil, used 0w 40 mobil 1 motor oil. When I...
  15. 330Ci P0174/P0313

    General E46 Forum
    I've been fighting with these codes for ages and finally need to see if anyone has an idea what might be the issue. The car is a 2002 330Ci. At one point there were more codes being thrown, one for ICV issues, and other for vacuum issues. I've have the car smoke tested twice, had all the...
  16. help :-(

    General E46 Forum
    been trying to find the dreaded cause of P0174 & P0171 codes. I have tried Cleaning maf (looks pretty new anyways) Checked disa and is working properly and o-ring looks good Checked intake boots for cracks/holes etc... Checked for leaks with spray and listened for engine changes. Checked cover...
  17. Help to analyze freeze frame and fuel trim data.

    General E46 Forum
    I have two error code P0171 and P0174. I attached the freeze frame and some fuel trim data. Please look at it. It looks like a vacuum leak. I checked all common areas, but found nothing wrong. The intake boot is new, CCV is new, and VCG is new. Follow Scotty's smoke test method, but found...
  18. Strange problem with LTFT

    General E46 Forum
    My 2005 E46 325i has SES light on. The codes are P1701 and P1704. The long term fuel trims are |Bank 1 | Bank 2 | Idle |15% | 23% | 2500rmp |3% | 9% | I tried a smoke test. There was no smoke leaking. The strange thing was that after the smoke test, the...
  19. P2096, P0174, P0171. hopefully fixed and what i learned.

    General E46 Forum
    Ive been chasing the solution to these codes for almost a month know, has caused many headaches. To start, I figured vaccum leak simply because well the codes imply the car is running lean and I didn't figure fuel problem because the car didn't bog or have a rough idle. only time it would rough...
  20. 2003 E46 330 Lean Codes. Help!

    General E46 Forum
    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...
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