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p0171

  1. Gen 3: 2005-2009
    So I originally got these codes a few months ago and after bit of research just cleared the codes to see how long they'd take to come back. The engine runs compeltely fine and gas mileage has been great as well. The codes came back after about a month with a check engine light and a flashing...
  2. Problems & DIY Maintenance
    I have a completely stock 2012 2.5L MTX Outback with about 200k miles. I have had a P0171 code that shows up when idling for longer periods (more than 3 mins). I did recently replace the MAF, Front O2 sensor, and PCV since I am around 100k since last replaced and it was the first suggestions...
  3. Problems & DIY Maintenance
    I have a Subaru Outback 2011 2.5 Limited which has been showing a P0171 Bank 1 System Too Lean code for weeks now. I have tried the following to fix it: replaced fuel pump with OEM Delphi pump/filter assembly; replaced the MAF; replaced both O2 sensors (before and after cat converter); replaced...
  4. Gen 3: 2005-2009
    Hi All, I've been cruising these forums and others a good bit for a solution to my intermittent P0171 problem. This has been going on for abut 2 years intermittently, and occurred both before and after an engine swap (performed by dealer, no mods). The CEL used to come on after an hour or more...
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