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Thread: 4005a 50074 fault codes

  
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    astra flick's Avatar
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    4005a 50074 fault codes

    Please could anybody tell me what fault code 4005a and 50074 mean and how to cure the fault ? any help would be great

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    Quote Originally Posted by astra flick View Post
    Please could anybody tell me what fault code 4005a and 50074 mean and how to cure the fault ? any help would be great
    Dont know the first one but the second one ecn 050074 relates to the vehicle speed sensor fault. I have it on my car and could possibly relate to a tyre change done by the previous owner.

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    just had the front discs and pads changed could that have anything to do with it? how did u cure yours cheers

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    Quote Originally Posted by astra flick View Post
    just had the front discs and pads changed could that have anything to do with it? how did u cure yours cheers
    Mine is not cleared but it has'nt affected teh car, i suspect the sensor has been disturbed during the change on yours. What effect is it having on the car??

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    as far as i can tell its not having any effect on the car, if i have the faults reset will it stay clear ?

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    First is to get them reset, and see if they reappear, i got my reset and one day when i breaked hard it came back. Other peopel also mentioned they have got the 050074 error and it does not effect the car (common fault), however others have said the car goes in limp mode if driven at 70mph and will not go over this.

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    great!!! thanks for your help

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    I think the first one is EGR related.

    P0400 Exhaust Gas Recirculation Circuit High Voltage C-017
    P0400 Exhaust Gas Recirculation Circuit Low Voltage B-023
    P0400 Exhaust Gas Recirculation Circuit Open B-023
    P0400 Exhaust Gas Recirculation Valve Powerstage High Temperature C-017
    P0400 Exhaust Gas Recirculation Flow Excessive Detected B-044
    P0400 Exhaust Gas Recirculation Flow Insufficient Detected B-036

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    i cleaned the egr and had the faults reset but eml came back on after 10 mins, do i need to replace egr or is there anything else i can do?

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    If you have cleaned it properly ie all soot removed in and around the valve and the plunger moves up and down and still get th eproblem then it could be time for a new vlave.

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