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NCT and yellow light

  • 16-12-2012 01:46AM
    #1
    GullibleOne
    Registered Users, Registered Users 2 Posts: 132 ✭✭


    Will NCT test a car with the yellow engine warning light on?


Comments

  • #2
    Leonard Hofstadter
    Registered Users, Registered Users 2 Posts: 5,531 ✭✭✭Leonard Hofstadter


    Not if it's petrol it won't, however if the light is on due to a fault that would result in an NCT failure (e.g. high emissions) then the cause of the light being on will need to be looked at.

    The engine light on in a diesel will result in an NCT failure.


  • #3
    Esel
    Registered Users, Registered Users 2 Posts: 24,759 ✭✭✭✭Esel
    Not Your Ornery Onager


    In a petrol car, the only warning lights that will cause you to automatically fail the test are ABS and airbag.

    However, if it is an oil pressure or oil level light, you would be well advised to get it sorted asap, regardless of NCT.

    Not your ornery onager



  • #4
    GullibleOne
    Registered Users, Registered Users 2 Posts: 132 ✭✭GullibleOne


    captainspeed wrote: »
    Not if it's petrol it won't, however if the light is on due to a fault that would result in an NCT failure (e.g. high emissions) then the cause of the light being on will need to be looked at.

    The engine light on in a diesel will result in an NCT failure.
    They won't test or it won't fail for the light?


  • #5
    GullibleOne
    Registered Users, Registered Users 2 Posts: 132 ✭✭GullibleOne


    Esel wrote: »
    In a petrol car, the only warning lights that will cause you to automatically fail the test are ABS and airbag.

    However, if it is an oil pressure or oil level light, you would be well advised to get it sorted asap, regardless of NCT.
    Not oil - yellow engine light.


  • #6
    LLU
    Closed Accounts Posts: 406 ✭✭LLU


    captainspeed wrote: »
    Not if it's petrol it won't, however if the light is on due to a fault that would result in an NCT failure (e.g. high emissions) then the cause of the light being on will need to be looked at.

    The engine light on in a diesel will result in an NCT failure.

    Any chance of a coherent response?


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  • #7
    Aint Eazy Being Cheezy
    Registered Users, Registered Users 2 Posts: 4,634 ✭✭✭Aint Eazy Being Cheezy


    captainspeed wrote: »
    Not if it's petrol it won't, however if the light is on due to a fault that would result in an NCT failure (e.g. high emissions) then the cause of the light being on will need to be looked at.

    The engine light on in a diesel will result in an NCT failure.

    I think he means an engine management light being on with a petrol car is not an automatic failure, and will get tested, however they will look at the reasons for the light being present.


  • #8
    [Deleted User]
    Posts: 3,126 ✭✭✭ [Deleted User]


    NCT will test a petrol car with the light on. They don't care why it's on if it passes everything else.


  • #9
    MAJJ
    Registered Users, Registered Users 2 Posts: 1,679 ✭✭✭MAJJ


    Had a petrol car pass recently with main engine light (yellow) on i knew in advance that it was an 02 sensor issue.

    This causes the engine to rev crazy at start up and settles down after a few minutes and some juice.

    Pretty funny watching the look on the testers face during the emissions test.

    In fairness when he spoke to me after he said first test was off the charts and second all good.

    Good luck with test.


  • #10
    LOTTOWINNER
    Registered Users, Registered Users 2 Posts: 507 ✭✭✭LOTTOWINNER


    GullibleOne wrote: »
    Will NCT test a car with the yellow engine warning light on?

    I had a car pass the NCT this month with engine management light on, it's a petrol car.

    Hope this helps.


  • #11
    Leonard Hofstadter
    Registered Users, Registered Users 2 Posts: 5,531 ✭✭✭Leonard Hofstadter


    Just because the engine light being on means that it can still pass the NCT does NOT mean that the problem should be ignored. This is one of the reasons why a car passing the NCT does not for a second mean that it's 100% perfect. The light is on because there is a fault with the engine or else some component that controls the engine's behaviour and/or emissions.


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  • #12
    LOTTOWINNER
    Registered Users, Registered Users 2 Posts: 507 ✭✭✭LOTTOWINNER


    captainspeed wrote: »
    Just because the engine light being on means that it can still pass the NCT does NOT mean that the problem should be ignored. This is one of the reasons why a car passing the NCT does not for a second mean that it's 100% perfect. The light is on because there is a fault with the engine or else some component that controls the engine's behaviour and/or emissions.


    I had a car pass the NCT this month with engine management light on, it's a petrol car.

    Hope this helps.


    In the case of my car, I got a diagnostic check and no errors showed up, the car is running fine, and I didn't want to waste money finding out why the E/M light was staying on, I should add that the car is worth about 1500 euros so it's not worth wasting money for the sake of curiosity.


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