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Thread: P1105 barometric pressure not plausible with boost

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    Default P1105 barometric pressure not plausible with boost

    Any idea's what this could be people. MAP sensor?
    only seems to come on a idle or low revs, i.e reversing of the drive.
    sometimes it clears itself after few seconds and sometimes it stays on

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    Admin & Merchandise Manager bigmac's Avatar
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    Vehicle : insignia

    Trim : irmscher

    Engine : 2.0 cdti

    Year : 2009

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    Could be an air leak best to check all hoses for splits

    Irmscher Insignia CDTI 130

    MOD'S...Irmscher front spoiler, Irmscher mats, Irmscher door pins, Irmscher rear spoiler, Irmscher grille, Irmscher skirt & exhausts,Irmscher Roof spoiler MOD'S TO COME..Side skirts,Wheels

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    could it be a vacumn leak? it seems to happen when the turbo isn't even spooled up

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    Regular Member paul wingnut's Avatar
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    Vehicle : vectra sri 150


    Engine : 1900 cdti 150

    Year : 2008

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    the boost press sensor on top of throttle valve housing will be the culprit if its a y20dth enngine very common

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    no mines a y22dtr

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

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    Quote Originally Posted by ian mc View Post
    no mines a y22dtr
    Same thing.

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    Regular Member the-wizard's Avatar
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    Vehicle : vectra-c

    Trim : sri

    Engine : cdti

    Year : 2004

    Mileage : 98,000

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    Had this with a cdti corsa a few weeks ago, the vx dealer dealer took £56 from him & told him it would be a further £70+ for in-depth diagnostics, but in there opinion it was the turbo, After a call to me i pleaded with him to wait till i was back from hols in 2 days, op-com'd it changed the boost sensor jobs a good un!, strange realy why they get called & slagged off so much! cant understand it! to**ers.

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    going to try cleaning the boost sensor now, i wouldn't of believe it was the turbo, only put a new one on a year ago!

    I will let you know

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