2000 E46 323i ECU Replacement

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  1. 2000 E46 323i ECU Replacement 
    #1
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    AlfonsoX's Car Details
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    I've got an E46 323i and i keep getting odd electrical problems. it started with my ABS+ASC lights coming on intermittently so i got a diagnostics cable to try and find the problem, got a bit of a shock when it returned all these:

    Instrument Cluster
    Part Number - 6902366
    CE – Außentemperaturfühler [External/Ambient Temperature Sensor]
    F5 – CAN Indentifikation fehlt (ASC)
    87 – Karosserie-Bus (K-Bus)
    D7 – Tank Sensor 2 (without fuel pump) tank lever sensor 2

    ZKE / ZVM
    Part Number – 8 3885 540
    1 – Protection of the IB and TSH
    7 – Module not coded
    4 - (Connecting) Terminal R
    61 - Interior monitoring protection

    ABS / ASC / DSC
    Part Number – 6 75 17 67
    49 – Wheel sensor, Rear left or outlet valve front right
    17 – Front Left wheel sensor
    148 – CAN ERROR engine speed (RPM)

    DME / DDE
    Part Number 7500255
    227 Lambda controller deviation Bank 1 large
    228 Lambda controller deviation Bank 2 large

    but sometimes there are no faults, so basically i have 13 faults or 0 faults so i'm guessing it's a major module at fault rather than these specific components.

    Is it the ECU that the diagnostics are fed to? would a faulty ECU give these readings? If so can you get a second hand ECU from the same car and plug it in without reprogramming it?

    Thanks everyone.
     
     

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    Ronnie's Car Details
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    Highly unlikely to be a single ECU at fault causing all these problems.

    Have you tried clearing the faults and then driving the car and then re-reading the faults?

    Also what are you using to read the faults?
     
     

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    That's pretty normal, ABS is pointing to a couple of wheel sensors, and the engine ECU is reporting that it's struggling on air measurement.
     
     

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    #4
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    AlfonsoX's Car Details
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    Thanks for the quick responses everyone.

    So do you think they could be genuine? to me it just seems strange that they either all appear or nothing appears. Cruise control takes it speed from the rear left wheel (i think) and that works fine. also if the lambda warnings were real i would get a check engine light/EML on the dash wouldn't I?

    I've tried clearing the faults but it makes no difference, if the ABS light is on there is no way to turn it off, it just turns off when it feels like it, and takes all the other faults with it. also when all the faults appear the alarm doesn't come on (central locking still works though) and surely the wheel speed sensors can't be linked to the alarm module.

    it's driving me crazy!
     
     

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