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Thread: Limp mode on my 2.0 dti and fault code is p0243.

  1. #1
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    Vehicle : 2.0t

    Trim : sri

    Engine : 2.0t

    Year : 2005

    Mileage : 161000

    Default Limp mode on my 2.0 dti and fault code is p0243.

    my veccy 2.0 dti has been playing up my mate plugged his magigal tool in and it came up P0243 Boost Pressure Valve Position Sensor.does anyone know what it is and where i can find it on my engine?thanks.

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    usually related to the Turbo wastegate valve but could be other things that cause the symptom, but start by checking that the gate is working properly

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    Vehicle : 2.0t

    Trim : sri

    Engine : 2.0t

    Year : 2005

    Mileage : 161000

    Default

    is it on the side of the throttle body?

  4. #4
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

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    DSCF0002AA.jpgDSCF0003AA.jpgIMG_3211B.jpgDSCF0001AA.jpgthe turbo wastegate is attached to the turbo itself

    Also worth checking that the vacuum hoses dont have any splits or signs of perishing , this is a common problem on the Dti,s .
    best bet is to change all the rubber vacuum tubing with silicon tube , you need three meters to do a DTi , cost ,s around about £7 on e bay
    Last edited by bobssignum; 20th September 2012 at 19:07.
    Driving vauxhall,s for 30 + years
    and still loving it

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    Vehicle : 2.0t

    Trim : sri

    Engine : 2.0t

    Year : 2005

    Mileage : 161000

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    my car has only one bulkhead actuaor.there is a plug next to thre one i have.never had this before.

  6. #6
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

    Default

    Some of the Dti s only have the one because they dont have the TP sensor on the inlet manifold, see third pic .
    Driving vauxhall,s for 30 + years
    and still loving it

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    Vehicle : 2.0t

    Trim : sri

    Engine : 2.0t

    Year : 2005

    Mileage : 161000

    Default

    thanks mate.its still doing it.limp mode.i cleaned the sensor with mr muscle oven cleaner is this damaging the sensor do you think?

  8. #8
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

    Default

    Get your misses or a mate to rev the engine for you while this is going on see if the wastegate diagfram arm is moving on the turbo.
    You may have to rev the car up to 2000 rpm to get the arm to move if it does not move then i would suspect that you have a leak in the vacuum hose system this will cause the car to go into limp mode .

    Would not exactly recommend mr muscle for cleaning boost sensor,s, but hey each to there own
    Driving vauxhall,s for 30 + years
    and still loving it

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    Vehicle : 2.0t

    Trim : sri

    Engine : 2.0t

    Year : 2005

    Mileage : 161000

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    so why would the diagnostic come back boost pressure sensor?cant really push the turbo as goes str8 into limp mode onlt revs to just under 3k revs!!!

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    Vehicle : 2.0t

    Trim : sri

    Engine : 2.0t

    Year : 2005

    Mileage : 161000

    Default

    so is it the sensor or what?the tool doesnt lie.it says boost pressure sensor,would this say that even if it was dodgy pipes?

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