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    Thread: P2187 Too lean at idle

    1. 08-15-2010 05:24 PM #1
      Hello Everyone,
      I've got A3 Sportback 2005, 2.0 TFSI and a problem I cannot get rid of. I hope someone here could help.
      My Vag reports error:

      008583 - Bank 1; System too Lean at Idle
      P2187 - 004 - No Signal/Communication - Intermittent - MIL ON

      and an orange "check engine" indicator is flashing above the steering wheel.
      My mechanic replaced PCV valve, looked for some leaks, cleaned engine valves.... Nothing has changed. Injectors, coils, spark plugs and fuel pump are OK. When we clear engine error with vag it takes about 150 Km to see orange diode again. We are running out of ideas what is wrong.
      If you have some suggestions please help.

    2. Member Gryphon001's Avatar
      Join Date
      Apr 25th, 2008
      2008 Audi A3 Sportback
      08-15-2010 10:44 PM #2
      Is the car flashed or stock??? could be an ECU problem or one of the fuel pressure sensors perhaps???

    3. 08-16-2010 03:43 AM #3
      Car is stock. Is there any way to check the fuel pressure sensors?

    4. 10-30-2010 07:04 PM #4
      Hi! Have you already found a solution to this problem? I have the same problem and thats why I am interested.

    5. Member mike3141's Avatar
      Join Date
      Feb 16th, 1999
      2012 A3 2.0TQ
      10-30-2010 09:22 PM #5
      If the fuel pressure sensors appear out of whack your cam follower may be failing.

    6. Member
      Join Date
      Oct 18th, 2010
      Apopka, FL
      2011 Audi A3 S-Line TI Quattro
      10-30-2010 09:29 PM #6
      Take it to the dealer and see what they might suggest and then ask your guy to take a look at it

    7. Member skotti's Avatar
      Join Date
      Sep 27th, 2005
      2006 A3 2.0T MT w/ Lots of Mods
      10-30-2010 09:52 PM #7
      Had the same code appear when my PCV went bad. Replaced PCV.
      Month later, get a steady CEL. Same code- CEL reset itself during tech's troubleshooting. Couldn't find cause.
      Problem would re-occur- CEL would reset itself.
      Just replaced my plugs (I'm at 55K miles), waiting to see if that has any affect.
      Also- not sure if related- the CEL/code appeared in the summer during hot weather. Fall weather, haven't seen any issue.
      Fuel pressure transmitter was replaced at about 45K miles.
      Friends don't let friends drive stock.
      2006 A3 2.0T 6MT with LOTS of mods

    8. Member kgw's Avatar
      Join Date
      May 1st, 2008
      2006 A3 S-Line 3.2, Schricked
      10-31-2010 08:36 PM #8
      No oxygen sensor mentioned?

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