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  1. Resetting DTCs and consequences

    Volkswagen Passat B6 Discussion
    Hi guys, new here but I need some help. Recently bought a 2006 B6 and was working fine until I noticed that the oil filler cap neck broke. As per a post here, I just took the cap off the neck and screwed it in directly to the engine. It fit! Then I noticed a steady check engine light. The...
  2. 2001 Passat 1.8t AWM p0171 code

    New Member Introductions
    My 01 passat 1.8t has been throwing the p0171 system too lean bank 1 code for some time and while it hasnt affected drivability at all, I would sleep better at night if I had an idea of what would be causing this. Mostly the cel lights up after a longer drive when I come to an idle at a sign or...
  3. 2006 VW Passat 2.0T Issues (Check Engine Code P0171 & P2540)

    Volkswagen Passat B6 Discussion
    Hey guys, New to the forum obviously but I got a 2006 VW Passat a few weeks ago off of a guy I work with who didn't need it anymore. I just needed a point A to point B car for work and he sold it to me pretty cheap. The Key Fob doesn't work (key does, but you can hear the parts shaking around...
  4. Bank 1 System Too Lean P0171

    Volkswagen Passat B5 Discussion
    I am receiving the P0171 CEL code with Bank 1 System too Lean. The car runs completely fine, no misfires and no rough idle. DEQ gave me a print out of their diagnostics which is as followed: misfire- ready fuel system- ready component- ready catalyst- ready catalyst heater- unsupported...
  5. Need help w/ 08 Passat 2.0T 4cylinder Auto (got 3 codes) P0171 P0299

    New Member Introductions
    So I bought the car off of a private seller. It?s has 115k miles. The car has been sitting there for months. It runs fine perfect. But I feel a delay in the gas peddle. I can hear the turbo only when I?m driving on the highway at high speeds 70+ Like a little whistle. It?s not loud enough that...
  6. P0171 Help!

    Volkswagen Passat B5 Discussion
    Got code P0171 - System too lean I spent a couple of hours inspecting the car and found that the PCV cranks case breather tube had broken off from the PCV - Ordered and replaced the part - Car still wont start. I'm pretty stuck at this point boys and was thinking it could be fuel pump or FP...
  7. P0171, P0299 and now C0759

    Volkswagen Passat B5 Discussion
    2003 B5.5 1.8t 155k mile wagon. Almost everything around the motor has been replaced. No vac leaks, no pressure leaks. Turbo spins freely. Car runs perfectly. We've had the 171 and 299 codes forever but after replacing A/C condenser, compressor, receiver/dryer and orifice tube, the C0759 popped...
  8. Possible way of fixing codes P0135, P0171, P0300, P0301, P0302, P0303, P0304.

    Volkswagen Passat B5 Discussion
    It is simple for those, who know. It may be helpful for everybody else. Video's link below. My car gave very good example of what I was talking in my videos about money. I would say it is MANDATORY to watch them in order to save hundreds and thousands of dollars(Euros, Rubles, Dinars, Pounds...
  9. Advice Please: Codes P12A2, P0171, Misfire 1 & 2

    B6 Garage
    Any help would be appreciated in how to properly diagnose what is going on with my 09 tsi passat with 114k miles I changed the oil over the weekend and two days later my wife took the car to work and I noticed a small amount of oil on the driveway. She came back and said the check engine light...
  10. Misfire on all Cylinders w/previous P0171 trouble code

    Volkswagen Passat B5 Discussion
    Hey folks, I've been having some issues with misfires! So I come here for help, I'm going to try to be as thorough as possible so excuse the lengthy post. I have an '04 1.8T Passat 4Motion, with 118k miles on the clock. I drove it back to Northern MN from Upstate, NY this past October. Shortly...
  11. General & fault code questions from a new car owner: smog, car reg., and p0171, p0300

    Volkswagen Passat B5 Discussion
    General & fault code questions from a new car owner: smog, car reg., and p0171, p0300 Hello, I drive a 2002 Volkswagen Passat GLX Wagon 4-Door 2.8L V6. As a new car owner I am particularly receptive to learning about how my car works for me and my responsibilities regarding my car. Question...
  12. General & fault code questions from a new car owner: smog, car reg., and p0171, p0300

    Volkswagen Passat CC Discussion
    General & fault code questions from a new car owner: smog, car reg., and p0171, p0300 [moved to B5]
  13. 2008 Passat 2.0 throw P0171 Cannot pin point problem

    Volkswagen Passat B5 Discussion
    This car has only 47000 miles on it. About a month ago it start to show engine light in yellow. I checked code. Sometimes it just display B2aaa which is too generic to tell anything. Sometimes it display P0171. It could mean the following •The MAF (Mass Air Flow) Sensor is dirty or faulty...
  14. P0411 / Kombi / P0171 / P1297 /misfire issues 1.8

    Volkswagen Passat B5 Discussion
    My last issue was the turbo and a P0420, but that was solved by changing the cat... and with much help from Steve in Chicago. Even with the turbo/cat problem fixed I am getting all the codes above and my performance is suffering. Back when I was having turbo issues, I performed a boost leak...
  15. P0411+P0171 trying to pass emissions

    B5 Garage
    So I've got to get my emissions done which means getting rid of my CEL. I plugged my OBD in and only got P0411. Saw it was related to secondary air pump. I unplugged my SAIP awhile ago because it was making a horrible whirling sound and I read on here it isn't necessary. I thought this was good...
  16. '06 Passat P0171

    Volkswagen Passat B6 Discussion
    I have a PO0171 "06 passat. I can't post a pic. I have an oil slick on the bottom of this CAP on the right side of the engine. looks likes a PCV sticking out of the front end of it. Help please?
  17. Another P0171 thread

    Volkswagen Passat B5 Discussion
    04 Passat 4motion 1.8T I've been getting this code for a while now and have replaced many faulty things in the vacuum system since I first got this code. I started with an obvious rubber elbow coming off the SAP, near the front top passenger side of the motor. While there I replaced that big...
  18. VW Passat 2000 Sedan 1.8T P0171 and P0172 (Complete Newbie)

    B5 Garage
    Hello everyone, I have been searching, reading and trying a whole lot of things on this forum, but I simply can not find a good answer for this. I recently purchased my passat, and after a couple days driving it already had the "check Engine" light showing. After tons of research, and...
  19. Engine code P0171

    Volkswagen Passat B5 Discussion
    I just recently got the system too lean code and I was hoping someone could help me understand what the problem is
  20. Intake leak and P0171 code

    Volkswagen Passat B5 Discussion
    2004 Passat 1.8T 4Motion sedan. I've been trying to track down a problem I've been having with a P0171 code, which is for a running lean condition. I have replaced some hoses around the engine compartment, cleaned the MAP a couple times, and most recently welded up a small hole in the exhaust...