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  1. 2010 Mazda 3: Engine Code P0171 System too Lean

    2010-2013 Mazda 3 Engine and Performance
    Hi, I have a 2010 Mazda 3 and I have been trying to diagnose engine code P0171 for quite some time now, unfortunately without any luck. What I have tried so far: 1. I have checked for vacuum leaks using carburettor cleaner and there doesn't appear to be any 2. I have replaced the MAF sensor...
  2. Help identify broken hose - system too lean

    2004-2009 Mazda3 Discussion
    Please see: imgur.com/a/qVqFP The hose outlined in green in the above image broke, approximately at the red line on the corresponding hose on the right. This caused a 'system too lean' code, however by taping it the code cleared. Would like to do a more legitimate fix, however I cannot...
  3. P0171 Lean condition

    2010-2013 Mazda 3 & Skyactiv Discussion
    Hi, I've got a 2010 Mazda 3 hatchback registering a P0171 Bank 1 system too lean. Light came on yesterday never had registered for the 7 years that I've owned it. Where do I begin to troubleshoot?
  4. Lean Code P0171 Popped & Hunted Down!

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    A few days back while driving up my hilly work route, my CEL lit w/o any symptoms. Having a Scangauge hooked fulltime gave me that privilege to instantly scan out the P0171 lean code. Knowing it wasn't serious & hoping t'was a fluke or random anomaly, I cleared it & carried on. I called the...
  5. Mazdaspeed 3 running lean? Evap light?

    2007-2009 Mazdaspeed 3 Performance & Mods
    2007 mazdaspeed 3 with cat delete manzo downpipe, intake and hypertech tuner. I found an exhaust leak around the turbo to downpipe gasket and it's only getting 14psi of boost, could this be the reason that it's running lean and having a boost issue? All the vacuum lines and tight and in good shape.
  6. Does your '14 lean?

    2014-2018 Mazda 3 Skyactiv Discussion
    I ask that any able-bodied tape measure wielding 2014 Mazda 3 hatchback (on 18") drivers do an inspection for me.. Measure your ride height on all four wheels, measuring from the ground to the base of the car behind each wheel. Recently I discovered that the front right, rear right, rear left...
  7. Corksport SRI for 2.5: CEL, Too Lean (P0171)

    2010-2013 Mazda 3 Engine and Performance
    I purchased a used Corksport SRI for my 2011 2.5 hatch this past Winter 2013. It worked great the first week, then a CEL showed up. It's been on and off intermittently for the past few months. It'll show up for a few days, then disappear, and return... I have noticed when it's on, there is a...
  8. CEL troubles

    2010-2013 Mazda 3 & Skyactiv Discussion
    With the recent change in the weather my car has begun to throw a p0171 CEL(bank 1 lean). I only get the light when it is very cool in the mornings, around 40ish. After the second time I got the light I went through and checked all my vac. lines and made sure everything on my Corksport SRI was...