2003 E46 330i - emissions light

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  1. 2003 E46 330i - emissions light 
    #1
    Bimmer Fan
    Car Details
    Clogwyn's Car Details
    Model of Car:
    330i
    Year of Manufacture:
    2003
    Transmission Type:
    Auto
    Car Body Type:
    Touring

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    Jun 2011
    Location
    Wales
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    The emissions light on my 2003 330i has come on 3 times in 3 months.After diagnostics all I have been told is weak mixture but the car runs perfectly and the spark plug colour is spot on on all plugs so the fault must only occur for an instant to trigger the light as it is OK for weeks afterwards.
    What is the most likely cause?
     
     

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    #2
    Super Moderator
    Car Details
    dailydoggy's Car Details
    Model of Car:
    330i
    Year of Manufacture:
    2001
    Transmission Type:
    manual
    Car Body Type:
    saloon
    dailydoggy's Avatar
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    Sep 2009
    Location
    UK
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    227 and 228 codes by any chance?? engine running lean both banks?


    it will be a vacuum leak on the intake side of the engine very common fault perished or split hoses on the e46..
    330i sport a big chunk of berlin...

     
     

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    #3
    BMW Fanatic
    Car Details
    paulb134's Car Details
    Model of Car:
    320i
    Year of Manufacture:
    2001
    Transmission Type:
    manual
    Car Body Type:
    touring

    Join Date
    Sep 2010
    Location
    norfolk
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    Same as mine mate,split intake hose from MAF to throttle body,and hose from rocker cover.
     
     

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    #4
    BMW Guru
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    joylove's Car Details
    Model of Car:
    328
    Year of Manufacture:
    1998
    Transmission Type:
    Manual
    Car Body Type:
    cabrio

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    Hoses are like £10 each I think. realoem for the PN, cooperbmwparts and bmminiparts for online parts.
     
     

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