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Thread: System Too Lean off Idle 2014 allroad 2.0

  1. #1
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    System Too Lean off Idle 2014 allroad 2.0

    Hi all
    2014 Audi allroad 2.0 60K miles. Borrowed my friends VCDS
    Been getting this every so often. used to self clear but now returning.
    Trips usually after a mile or so after restart when engine is hot.
    2821 - Bank 1; System Too Lean off Idle
    P2177 00 [101] - -
    Not Confirmed - Tested Since Memory Clear
    Freeze Frame:
    Fault Status: 00000001
    Fault Priority: 2
    Fault Frequency: 1
    Mileage: 97738 km
    Date: 2019.11.29
    Time: 13:38:25

    Engine speed: 1694.00 /min
    Normed load value: 17.3 %
    Vehicle speed: 68 km/h
    Coolant temperature: 96 C
    Intake air temperature: 33 C
    Ambient air pressure: 1010 mbar
    Voltage terminal 30: 14.771 V
    Unlearning counter according OBD: 80
    Engine status: COENG_RUNNING
    Engine status-Test_Program_Co Eng st COMPU VERB UBYTE: 3

    Back story abut 9 months ago had this same code and replaced the oil breather assembly which fixed it (along w/ an erratic idle)
    Idle is ok now.
    Data logged (3 mile drive) Long term adaptation of mixture formation bank 1. Running between 3 and 7% typically 5% Is this bad?
    Short term bounces +/- . Air leak somewhere? Smoke test next?
    Also seeing cylinder 1 and 3 misfires during warmup / first mile driving (not at start or hot) Replaced coil packs and plugs not change Clys 2 and 4 are quiet.
    Thanks

  2. #2
    Benevolent Dictator Uwe's Avatar
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    Please post a complete Auto-Scan for context.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  3. #3
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    Code:
    Friday,29,November,2019,15:33:50:30821
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.0 (x64)
    Data version: 20190930 DS308.0
    www.Ross-Tech.com
    
    
    VIN: WA1UFAFL9EA120893   License Plate: 
    Mileage: 60736 airfil   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
                    Address 01: Engine       Labels: 06H-907-115-CDN.clb
    Control Module Part Number: 8K5 907 115 N    HW: 8K2 907 115 L
      Component and/or Version: 2.0l R4/4V TF H09 0005
               Software Coding: 722A0013242600062000
                Work Shop Code: WSC 09153 003 1048576
                  ASAM Dataset: EV_ECM20TFS0118K5907115N 001006 (AU48)
                           ROD: EV_ECM20TFS0118K5907115N.rod
                          VCID: 3D7BC726AC09CBA78C-8068
    1 Fault Found:
    
    2821 - Bank 1; System Too Lean off Idle 
              P2177 00 [101] - -
              Not Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 2
                        Fault Frequency: 1
                        Mileage: 97738 km
                        Date: 2019.11.29
                        Time: 13:38:25
    
                        Engine speed: 1694.00 /min
                        Normed load value: 17.3 %
                        Vehicle speed: 68 km/h
                        Coolant temperature: 96 C
                        Intake air temperature: 33 C
                        Ambient air pressure: 1010 mbar
                        Voltage terminal 30: 14.771 V
                        Unlearning counter according OBD: 80
                        Engine status: COENG_RUNNING
                        Engine status-Test_Program_Co Eng st COMPU VERB UBYTE: 3
    
    
    Readiness: 0000 0001
    Last edited by Uwe; 12-11-2019 at 11:50 AM. Reason: CODE tags

  4. #4
    Verified VCDS User PetrolDave's Avatar
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    That's still not a FULL UNEDITED Auto-Scan ...

  5. #5
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by Aallroad View Post
    Air leak somewhere?
    That would be my guess.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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