2004 e46 325ci Lean Codes (227/p0188, 228/p0189)

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Thread: 2004 e46 325ci Lean Codes (227/p0188, 228/p0189)

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  1. 2004 e46 325ci Lean Codes (227/p0188, 228/p0189) 
    #1
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    Car Details
    JHildering's Car Details
    Model of Car:
    325Ci M Sport
    Year of Manufacture:
    2004
    Transmission Type:
    Manual
    Car Body Type:
    Cabrio

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    I'm in desperate need of help! For a while now i am receiving lean trouble codes for both banks long term fuel trim values. This is what i replaced/done already:

    - A new MAF
    - A new DISA
    - Lower and upper intake booth
    - All vacuum lines
    - Throttle body gasket (also cleaned it with the ICV)
    - CCV including all pipes that go with it
    - Fuel filter/regulator
    - Checked the valvecover gasket for leaks, found none
    - Removed oil filler cap and tested it with a plastic bag, didn't get sucked in
    - Tested the pre-cat oxygen sensors with INPA, seamed to be fine

    The current fuel trim values:

    BANK 1
    Additiv (LTFT): -0.04ms
    Multiplicative (STFT): +12%

    BANK 2
    Additiv (LTFT): -0.05ms
    Multiplicative (STFT): +12%

    Also while warming up, when the temp gauge reads just above the blue zone the idle sometimes jumps a bit between 1000rpm and 500rpm while idling. When the car is fully warmed up this doesn't happen anymore.

    Also the shadow memory contains the following error:

    52 Exhaust flap
    KS --> Ground of open circuit
    Error frequency : 0

    I don't know if it has anything to do with the lean codes.

    Does anyone know where i should look to find the problem. I'm really getting desperate here...



     
     

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    #2
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    Ronnie's Car Details
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    Never too old, never too new
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    Have you tried clearing the codes and then resetting the adaptations? Then driving the car to see if the fault reoccurs?

    If you have then I would get the intake system smoke tested and then have the fuel pressure checked.
     
     

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    #3
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    joylove's Car Details
    Model of Car:
    328
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    1998
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    Manual
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    cabrio

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    Do not reset adaptations while the engine is running. It will take about 100 miles for the engine to recover it's adaptations during which time the idle may be high and a bit lumpy.
     
     

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    #4
    Bimmer Fan
    Car Details
    JHildering's Car Details
    Model of Car:
    325Ci M Sport
    Year of Manufacture:
    2004
    Transmission Type:
    Manual
    Car Body Type:
    Cabrio

    Join Date
    Jan 2011
    Location
    Holland
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    I have cleared them, but the keep resulting in the same value... my car has to get an oil service in 300km, then i'm going to ask if they kan measure my fuel pressure and maybe a smoke test to look voor leaks.
     
     


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