2000 E46 323i Lambda Sensor

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  1. 2000 E46 323i Lambda Sensor 
    #1
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    AlfonsoX's Car Details
    Model of Car:
    323i
    Year of Manufacture:
    2000
    Transmission Type:
    Manual
    Car Body Type:
    Saloon
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    I got the emmisions light come up on my dash so i did a scan with carsoft and sure enough there was a fault with the lambda sensors, however i'm not able to work out which one it is.

    these are the faults that carsoft is throwing up:

    lambda control deviation too large bank 2
    lambda control deviation too large bank 1

    All it says is that the difference between them is too large, which i guess would happen if one of them went. Or does it mean that both of them have gone. seems strange that they both would go at once.
    The car has done about 107,000 miles.

    Asked BMW how much a proper scan costs and they said roughly £70 on ebay you can get a replacement lambda sensor for only £60 so would be cheaper to change them both!

    I erased the fault but it came back on about 100 miles later.

    Is there a way in carsoft to get a more definative answer as to which one it is? Is it nearly always a specific sensor that goes first?

    Thanks everyone.
     
     

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    #2
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    AlfonsoX's Car Details
    Model of Car:
    323i
    Year of Manufacture:
    2000
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    Re-reading this, i probably should have put it in the "Diagnostic Hardware and Software Discussion" section. sorry.
     
     

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    #3
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    sophos9's Car Details
    Model of Car:
    328ci SE
    Year of Manufacture:
    2000
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    Only replace lambda sensors with genuine BMW parts, anything else will fail leaving you out of pocket. Carsoft is pretty poor for diagnostic work so that error message could mean 1 or both failed. Check the running metrics of the vehicle, you are looking for evenly timed oscillation of the lambda output. Please also report short term and long term fuel trim
     
     

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