2005 E87 120d Sport - Fault Codes

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  1. 2005 E87 120d Sport - Fault Codes 
    #1
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    pazza's Car Details
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    Hi,

    I've been having some problems with my heater blowers lately. I ran a diagnostic (using my Autel Maxidiag EU702) and got the following codes:

    DME:
    4B10 – Smooth Running Regulation – Correction Quantity Too High
    41F2 – Electric Ventilator - Activation Interrupted
    4212 – Cylinder 1 – Activation Interrupted
    4242 – Cylinder 4 – Activation Interrupted
    4B37- ?????????????????
    3EFC - ???????????????

    IC:
    A3B3 - ????????

    I managed to translate some of them online (as the diagnostic tool doesn't tell you the fault definition), however some of them I couldn't find...

    Does anybody have a list of codes for the E87 (1 Series)?

    Also, does anyone know whether a combination of some of the above could point to a faulty fan motor?

    I have had my car remapped, so was expecting to see some fault codes (as the re-map generates some codes - so I believe).

    Thanks in advance!

    Paul
     
     

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    #2
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    the E46 had the hedgehog heat sink problem related with climate control not working, could be similar scenario with your e87
     
     

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    pazza (07-08-2010)

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    #3
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    Hi Mate,

    I replaced the hedgehog, although it doesn't look like a hedgehog on the 1 series - but is the same part (Final Stage Resistor). This did not solve my problem!

    I was hoping it would be the hedgehog, as it would have been a simple fix.
     
     

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    #4
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    I know 4212 and 4242 are the glowplugs on those cylinders.

    4B37 and 3EFC haven't made it out into the popular code lists as yet.

    A3B3 is from the Instrument Cluster are relates to a fault in monitoring the airbags in the MRS5 module (Multiple Restraint Sytem - ie airbag system)
    If there are no faults stored in the airbags, it may be the cluster that has a glitch.
     
     

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    #5
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    Thanks mate,

    I bought a couple of new glow plugs as I thought that's what 4212 and 4242 related to. I should really replace them and then rescan! As the car started and ran ok I haven't forced myself to do it.

    The airbag scan did not return any faults, so as you say it may be a glitch in the module.

    Looks like I may have to take it into BMW for a scan/diagnosis. I could spend countless weekend's/evenings pulling the car apart and testing!

    Cheers,

    Paul
     
     

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    #6
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    If you go into BMW, as them to check Service Information Bulletin
    SI B 65 68 06

    As this relates to the A3B3 code.
     
     

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    pazza (07-08-2010)

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    #7
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    Cheers mate,

    I'll mention this to the guy at my local independent (or would a main dealer be better)?
     
     

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    #8
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    A main dealer will be better for the A3B3 code, as they have an update to the diagnostic system to test this and repair.
    It may just be a glitch that can be ignored with safety, but worthwhile at least getting an estimate for repair.
    The other codes may require BMW intervention to find out their cause.
    4B10 – Smooth Running Regulation – Correction Quantity Too High for example is more of a symptom than a problem.
     
     

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    I'm going to change my glow plugs on the weekend if I get chance and see whether that effectes th 4B10 code, although I think that code could be related to the re-map I had done...

    I will be taking car into BMW when I get paid, hopefully they can diagnose my woes, and then I can fix them my self. Thanks for your help.
     
     

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    #10
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    I can't see it being a remap causing that, but i guess if there was a bit of a slip up, it could happen.

    Basically the ecu is watching the pulses from the crank sensor, and not only is it counting the revolutions of the engine, it's also looking to see if it turns faster in any particular spots.

    If there was a misfire from a cylinder, everytime it would come to that cylinder to fire, it wouldn't see the crank turning any faster.

    Inbetween all this watching, if it spots a cylinder under or over performing, it'll make slight adjustments to the amount of diesel going in, to smooth it off.

    I guess if the fuel pressure was bumped up too high, everytime it wants to put a dab more diesel in, it'll get a torrent of the stuff, but the remap does let the ecu know the fuel pressures, so it should be able to figure that out.

    If it was a tuning box, the ECU wouldn't know, and would be scratching it's head as to why opening the injectors just a little more gives a massive power increase.

    I would be tempted for the most of it to not mention the remap to BMW at all, as there is a good chance they will just clap their hands together and say "well! there we go then" and not look any further.
     
     

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