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system too lean

  1. Can't seem to fix P0171 error!

    Questions, Issues or Problems with the New Beetle
    I have to smog a 2008 Beetle, and the emissions light is on. The error code is P0171, system too lean. I took the car to our standard (honest and reliable) repair place, and they have replaced the MAF three times now, first with an after-market MAF, then with MAFs from VW. Each time, the error...
  2. P0171 with AVH

    2.0 Liter Gas
    my 2001 AVH keeps raising the P0171, system too lean, code. A few months ago, I cleaned the MAF. I only drove about 150 m miles until I took it on a 1800 miles trip. On this trip, the CEL came on three times, with the P0171 code. The first two times, I cleared it at the end of the day. The last...